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The XX Lab

Sarah

Welcome to The XX Lab, where I talk with scientists and top-performing women to give you insights that you can use in everyday life.

This is not another health podcast telling women to optimize endlessly or chase extreme longevity. It’s a science+life podcast for women who want to feel better now—not just live longer later.

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Monday · 1 hr 30 min
Love Your Partner But Don’t Want Sex? A Kinsey Scientist Explains | Dr. Cynthia Graham #25
Love your partner but rarely feel like having sex? Most of us were taught that desire should strike out of nowhere, and that if it doesn’t, something is wrong with us. What if desire never worked that way for anyone? In this episode of The XX Lab, Dr. Sarah Hill sits down with Dr. Cynthia Graham, Senior Scientist at the Kinsey Institute and Editor-in-Chief of the Journal of Sex Research, who has spent decades studying sexual response and about 35 years working with individuals and couples in sex therapy. They talk about why planned sex can be just as satisfying as spontaneous sex, the myth that men always want sex, why desire changes in long-term relationships, what turns women on and off, why you can love your partner and still not want sex, and why low desire without distress isn’t a dysfunction. Key Takeaways: Planned sex can be just as enjoyable and arousing as spontaneous sex, and anticipation is one of the biggest triggers of desire In a UK study of 15,000+ people, the strongest predictor of losing sexual interest was not being able to share likes and dislikes with a partner Desire often changes over a long relationship, and that doesn’t mean the relationship or either partner is broken A sexual difficulty is only a dysfunction when it causes distress, lasts and is severe; counting distress, most sexual problems drop to about 1–4% About Cynthia Graham: Dr. Cynthia Graham is a clinical psychologist, Senior Scientist at the Kinsey Institute and Distinguished Professor of Gender Studies at Indiana University Bloomington. She has been Editor-in-Chief of the Journal of Sex Research since 2009, is a past president of the International Academy for Sex Research, and was a member of the DSM-5 Sexual and Gender Identity Disorders Working Group. She earned her PhD at McGill University, worked clinically with individuals and couples for about 35 years, and was previously Professor of Sexual and Reproductive Health at the University of Southampton. Kinsey Institute: https://kinseyinstitute.org/about/profiles/cgraham.php Indiana University: https://gender.indiana.edu/about/faculty/graham-cynthia.html Timestamps Introduction: Is Spontaneous Sexual Desire a Myth? (00:00) What “Context” Really Means for Sexual Desire (13:49) How Much Does Emotional Connection Matter for Sex? (22:23) The #1 Predictor of Losing Sexual Interest (28:14) Why Desire Fades in Long-Term Relationships (36:31) Why a Little Distance Keeps Desire Alive (45:59) Mismatched Libidos: Is It a Deal Breaker? (52:27) What Turns Women On and Off: Inside Her Most-Cited Study (1:07:04) How Body Image Distracts Women During Sex (1:21:50) Sexual Difficulty vs. Dysfunction: Why Distress Matters (1:29:16) What Sex Researchers Are Studying Now (1:40:01) The XX Lab is where midlife women come to understand the science of their own biology: hormones, brain chemistry, behavior, and the research that finally makes sense of how you feel. Dr. Sarah Hill breaks down the evidence with rigor and warmth, so you can make decisions rooted in real science, not guesswork.
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October 29 · 12 min
Lost the Attraction to Your Partner? How to Tell If It's Hormones | Dr. Sarah Hill
Can the birth control pill change who you’re attracted to? If you’ve been on social media lately, you’ve probably heard some version of this: go on the pill and you’ll pick the wrong partner, or come off it and suddenly realize you’re not attracted to the person you’re with. In this video, I explain how estrogen, progesterone and the pill shape what you notice in a partner, why there’s no hormone-free “real you” hiding underneath, how to tell low libido from lost attraction, how to track your own patterns, and how to work with your hormones instead of being surprised by them. Timestamps Introduction: Can the Pill Change Who You’re Attracted To?(00:00) How Hormones and the Pill Shift Attraction(00:50) Low Libido or Lost Attraction? How to Tell the Difference (05:48) How to Track Your Cycle, Desire and Attraction (07:58) How to Work With Your Hormones, Not Against Them (11:35) The XX Lab is where midlife women come to understand the science of their own biology: hormones, brain chemistry, behavior, and the research that finally makes sense of how you feel. Dr. Sarah Hill breaks down the evidence with rigor and warmth, so you can make decisions rooted in real science, not guesswork. For more research-backed insight on your hormones, brain, and behavior, find Dr. Sarah Hill here: Website: https://www.sarahehill.com Instagram: / sarahehillphd LinkedIn: / sarahehillphd Go deeper with Dr. Sarah Hill's books, both science-backed guides to understanding your own biology: The Period Brain: the new science of why we PMS and PMDD, and how to feel your best all month long https://www.amazon.com/Period-Brain-S... This Is Your Brain on Birth Control: how the pill shapes mood, attraction, and behavior in ways most women are never told https://www.amazon.com/This-Your-Brai...
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#24
October 26 · 1 hr 1 min
Why You Assume the Worst About the People You Love | Dr. Yael Schonbrun #24
Why do we feel so misunderstood, even by the people closest to us? Clinical psychologist Dr. Yael Schonbrun says it’s because we’re trying to fix misunderstanding with the wrong tool. Communication happens between people, but understanding happens inside them. It’s shaped by overconfidence, mood, hunger, history and the stories we tell about each other. Most of us are certain we understand other people, and just as certain they don’t understand us. That math doesn’t work out. Our brains are built to feel sure of what we perceive, and even Nobel Prize - winning psychologist Danny Kahneman wrote that he still falls for cognitive bias. Talking more won’t change that on its own. Awareness, curiosity and a little more generosity can. In this episode of The XX Lab, Dr. Sarah Hill sits down with Dr. Yael Schonbrun, a clinical psychologist at Brown University and author of Why Don’t You Understand Me?, to explore what drives understanding and misunderstanding beneath the words. They cover why overconfidence is the bias that rules all others, how naive realism makes our own view feel like the truth, why we cast people as villains, how keeping score wears down relationships, why understanding someone isn’t agreeing with them, and what to ask when the same fight keeps coming back. KEY TAKEAWAYS: Misunderstanding usually starts inside us, in how we interpret what others say and do, not in the words themselves Overconfidence is “the bias that rules all others”: feeling certain about what someone meant isn’t the same as knowing We notice what we give more than what we receive, so being a little more generous than feels fair keeps relationships in a positive cycle, without becoming a doormat In a recurring fight, ask: “What do you think I’m missing?” Guest Bio Dr. Yael Schonbrun is a clinical psychologist at Brown University with more than 20 years of clinical experience, specializing in the treatment of couples and relationships. She writes for media outlets including The Washington Post and is the author of Why Don't You Understand Me?, which looks at the processes inside people that drive understanding and misunderstanding. Connect with Dr. Yael Schonbrun Website: https://www.yaelschonbrun.com Timestamps Introduction (00:00) Overconfidence Is the Bias That Rules All Others (05:50) When Should You Stop and Get Curious? (10:40) The Villain-Victim Story We Tell Ourselves (22:10) Strategic Generosity: Stop Assuming the Worst (34:09) Why It's So Hard to Stop Seeing Someone as the Villain (46:22) Understanding Someone Isn't Agreeing With Them (51:55) What to Ask When You Keep Having the Same Fight (58:31) The XX Lab is where midlife women come to understand the science of their own biology: hormones, brain chemistry, behavior, and the research that finally makes sense of how you feel. Dr. Sarah Hill breaks down the evidence with rigor and warmth, so you can make decisions rooted in real science, not guesswork. For more research-backed insight on your hormones, brain, and behavior, find Dr. Sarah Hill here: -Website: https://www.sarahehill.com -Instagram: https://www.instagram.com/sarahehillphd -LinkedIn: https://www.linkedin.com/in/sarahehillphd
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#23
October 19 · 1 hr
Too Young for Perimenopause? The Early Signs Most Women Miss | Dr. Mariza Snyder #23
What if the reason you don't feel like yourself isn't stress or burnout, but a hormonal transition that started years before your cycle ever changed? For many women, early perimenopause begins in the late 30s or early 40s with brain fog, poor sleep, and mood changes, while periods and labs still look completely normal. In this episode of The XX Lab, I sit down with Dr. Mariza Snyder, women's hormone expert, host of the Energized podcast, and author of The Perimenopause Revolution. We explore early perimenopause symptoms, why midlife weight gain comes down to insulin resistance and not willpower, how to use a continuous glucose monitor, the simple daily habits that move the needle, and how this transition can become an awakening rather than a loss of self. Key Takeaways: -Early perimenopause symptoms can start in your late 30s, even with regular periods. - Perimenopause weight gain is driven by insulin resistance, not willpower. - A short walk after meals helps lower blood sugar spikes. - Perimenopause is a window to protect your bone, heart, and brain health. Timestamps: Dr. Mariza Snyder on The Perimenopause Revolution (00:00) What Is Perimenopause? Early vs. Late Perimenopause Explained (02:00) Early Perimenopause Brain Fog With Normal Periods and Labs (06:30) Perimenopause and Identity: Feeling Like You've Lost Yourself (11:20) A Mother's Perimenopause Story: From Burnout to Marathons (15:40) Early Perimenopause Signs and How to Track Your Symptoms (21:20) Perimenopause Weight Gain: Estrogen, Insulin Resistance, and Belly Fat (30:00) How to Use a Continuous Glucose Monitor (CGM) in Perimenopause (35:20) How to Lower Blood Sugar Spikes: Post-Meal Walks and Exercise Snacks (42:00) Perimenopause Morning Routine for Energy, Sleep, and Blood Sugar (46:50) How to Find a Perimenopause Doctor and Which Tests to Ask For (59:00) Best Perimenopause Lifestyle Changes: Sleep, Movement, and Friendship (1:03:30) Is HRT Safe? Hormone Therapy, Testosterone, and Breast Cancer Risk (1:06:40) Perimenopause Myths and What Really Changes After Menopause (1:10:10) Guest Bio Dr. Mariza Snyder is a functional practitioner and women's hormone expert with more than 17 years of experience helping women navigate perimenopause and beyond. She holds a Doctor of Chiropractic degree, hosts the top-rated Energized with Dr. Mariza podcast, and is the bestselling author of several books, including The Perimenopause Revolution, which offers a five-week reset for hormones, metabolism, and energy. - https://drmariza.com/book - https://www.instagram.com/drmariza - https://www.amazon.com/dp/1401997406 *** The XX Lab is where midlife women come to understand the science of their own biology: hormones, brain chemistry, behavior, and the research that finally makes sense of how you feel. Dr. Sarah Hill breaks down the evidence with rigor and warmth, so you can make decisions rooted in real science, not guesswork. For more research-backed insight on your hormones, brain, and behavior, find Dr. Sarah Hill here: -Website: https://www.sarahehill.com -Instagram: https://www.instagram.com/sarahehillphd -LinkedIn: https://www.linkedin.com/in/sarahehillphd
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#22
October 12 · 50 min
Why Is It So Hard to Say No? The Psychology Behind People-Pleasing | Dr. Vanessa Bohns #22
What if saying yes when you mean no isn't a boundary problem, but a predictable feature of how your brain protects your place in the group? "No is a complete sentence" sounds simple, but the research says the moment of being asked is anything but. In this episode of The XX Lab, I sit down with Dr. Vanessa Bohns, social psychologist, Cornell professor of organizational behavior, and author of the new book Should I Say Something? We explore compliance vs consent, why we underestimate how often people say yes, the persuasion tactics salespeople use, how to say no to a boss or a date, and when it's worth speaking up. KEY TAKEAWAYS: Compliance is just behavior. Consent means you truly felt free to say no and understood what you were agreeing to. We consistently underestimate how likely others are to say yes to our requests, and how much pressure our asks put on them. Buying time with "let me think about it and get back to you" moves you out of the hot emotional moment and into a clearer decision. In social situations, we underestimate how much people like us, notice us, and want our honest feedback. Timestamps Introduction: Dr. Vanessa Bohns on Why Saying No Is So Hard (00:00) Compliance vs Consent: What's the Difference? (02:55) Why Women Say Yes When They Want to Say No (04:00) Why We Underestimate How Often People Say Yes (09:05) Persuasion Tactics: Reciprocity, Authority and Social Proof (11:00) What Happens in Your Brain When Someone Asks You for a Favor (19:10) What Genuine Consent Actually Requires (25:30) How to Ask for a Favor Without Pressuring Someone (28:45) How to Say No to Your Boss Without Looking Lazy (34:35) How to Politely Turn Down a Date (37:50) How to Buy Time Before You Say Yes (41:10) Should I Say Something? When to Speak Up and When to Stay Quiet (48:40) Why You Shouldn't Tell Your Boss You Love Your Job (54:20) Why We Underestimate How Much People Like Us (57:20) Guest Bio Dr. Vanessa Bohns is a social psychologist and the Braunstein Family Professor and Chair of Organizational Behavior at Cornell University's ILR School. She holds a PhD in psychology from Columbia University and an AB from Brown University. An expert on help-seeking, social influence, compliance, and consent, her research explores why it's so hard to ask for things and so hard to say no, and has been featured in The New York Times, The Wall Street Journal, The Atlantic, and on NPR's Hidden Brain. She is the author of You Have More Influence Than You Think and Should I Say Something?: The Science of What to Share and What to Keep to Yourself. -Website: https://www.vanessabohns.com -Instagram: https://www.instagram.com/profbohns -Book: https://www.amazon.com/dp/0306835703 The XX Lab is where midlife women come to understand the science of their own biology: hormones, brain chemistry, behavior, and the research that finally makes sense of how you feel. Dr. Sarah Hill breaks down the evidence with rigor and warmth, so you can make decisions rooted in real science, not guesswork. For more research-backed insight on your hormones, brain, and behavior, find Dr. Sarah Hill here: -Website: https://www.sarahehill.com
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#21
October 5 · 1 hr 52 min
The Hormone-ADHD Connection Women Aren’t Told About | Dr. Jolene Brighten #21
You've been told midlife brain fog is just stress. What if perimenopause is actually revealing a brain you've been masking your whole life? In this episode of The XX Lab, I sit down with Dr. Jolene Brighten, board-certified naturopathic endocrinologist and author of Beyond the Pill, to talk about her new book, ADHD and Women. We explore why perimenopause unmasks ADHD, how to tell it apart from brain fog, the birth control connection, and what actually supports the ADHD brain. Whether you're curious about ADHD in women, hormones and the brain, or the hidden side effects of hormonal birth control, I think you'll find this conversation to be a science-backed, deeply validating look at how hormones shape who we are at every life stage. KEY TAKEAWAYS: ADHD isn't a deficit of attention. It's difficult to regulate attention, and hormones influence how it shows up across a woman's life. The highest rates of new ADHD diagnoses are in middle-aged women, a group that was missed for decades, not a sign that ADHD is new. Perimenopause can cause ADHD-like symptoms in women who don't have ADHD. True ADHD has been present since childhood. Diet, sleep, and daily movement don't cause or cure ADHD, but they strongly influence how severely symptoms are expressed. Timestamps What Happened When She Questioned The Pill (00:00) Birth Control Myths And The Hidden ADHD Risk (06:26) Late ADHD And Autism Diagnosis: The Signs She Missed (15:44) How Perimenopause Unmasks ADHD In Women (26:42) What ADHD Actually Feels Like For Women (34:32) Perimenopause Or ADHD? How To Tell The Difference (42:07) Pharma Skepticism, Hormones And ADHD Stimulants (54:20) Is ADHD Rising Or Just Diagnosed More? (1:11:47) ADHD Meds For Kids, Creatine And Omega-3s (1:22:48) Why She Regrets Starting The Pill At 17 (1:37:55) PMDD Isn't Just Progesterone: Histamine And Inflammation (1:44:49) Guest Bio Dr. Jolene Brighten is a board-certified naturopathic endocrinologist, certified menopause specialist, and nutrition scientist known for translating complex hormone science into practical care. She is the bestselling author of Beyond the Pill and Is This Normal?, and her new book, ADHD and Women, explores how hormones shape ADHD across a woman's life. She hosts The Dr. Brighten Show, a top-rated women's health podcast. Website: https://drbrighten.com Instagram: https://www.instagram.com/drjolenebrighten Book: https://www.amazon.com/dp/059398160X *** The XX Lab is where midlife women come to understand the science of their own biology: hormones, brain chemistry, behavior, and the research that finally makes sense of how you feel. Dr. Sarah Hill breaks down the evidence with rigor and warmth, so you can make decisions rooted in real science, not guesswork. For more research-backed insight on your hormones, brain, and behavior, find Dr. Sarah Hill here: Website: https://www.sarahehill.com Instagram: https://www.instagram.com/sarahehillphd LinkedIn: https://www.linkedin.com/in/sarahehillphd
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#20
September 28 · 1 hr 30 min
Your Relationships Are Affecting Your Health More Than You Think | Dr. Rich Slatcher #20
What if the strongest predictor of how long you live has nothing to do with your diet, your sleep, or the gym? I have spent my career studying hormones and behavior, and this one still stops me: the quality of your relationships predicts mortality at roughly double the effect of exercise. In this episode of The XX Lab, I sit down with Dr. Rich Slatcher, Gail M. Williamson Distinguished Professor of Psychology at the University of Georgia and director of the Close Relationships Lab. Rich and I were in the same graduate program at UT Austin, so this is part science, part reunion. We cover why social connection predicts mortality, how partner responsiveness shapes health, why men benefit more from marriage than women do, and what makes a first date work. Key Takeaways: - Social integration predicts mortality at roughly double the effect of exercise - Opening up only helps your health if the person listening actually responds - Men route nearly every emotional need through a spouse; women keep wider networks - Where you have a first date matters far less than how open the conversation gets Timestamps How Relationships Shape Health With Dr. Rich Slatcher (00:00) Expressive Writing Can Boost Your Immune System (01:25) Why Men Rarely Open Up To Friends (07:50) From Anthropology To Evolutionary Psychology (11:30) Strong Relationships Help You Live Longer (20:15) Is The Cortisol Link To Health Overhyped? (26:35) How Your Partner's Response Shapes Your Health (33:30) Does Conflict Outweigh Support In Your Relationship? (40:15) Marriage Helps Men's Health More Than Women's (48:55) Are Couple Friends Worth The Risk? (55:35) Conversation Beats Romantic Settings On First Dates (01:04:40) 3 Signs Someone Is Really Listening To You (01:13:45) Do Men Need Face To Face Friendships? (01:23:45) Studies mentioned in this episode - House, Landis and Umberson (1988), Science: https://pubmed.ncbi.nlm.nih.gov/3399889/ - Holt-Lunstad meta-analysis: https://doi.org/10.1371/journal.pmed.1000316 - Slatcher and Selcuk, strength and strain model: https://pubmed.ncbi.nlm.nih.gov/28367003/ Guest Bio Dr. Rich Slatcher is the Gail M. Williamson Distinguished Professor of Psychology at the University of Georgia, where he directs the Close Relationships Lab. He earned his PhD at UT Austin with James Pennebaker and completed an NIMH postdoctoral fellowship in health psychology at UCLA. His research examines self-disclosure, partner responsiveness, and how close relationships shape physical health and wellbeing. Website: https://www.richslatcher.com
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#19
September 21 · 1 hr 27 min
What Women Should Know Before Taking Hormonal Birth Control | Dr. Nusa Faric #19
You've been told the pill is too small to change who you are. What if the science says otherwise, and you're not imagining it? For years, women who reported mood changes on the pill were told it was in their heads, and the research was called conflicting. A new meta-analysis suggests the pattern was there all along. We just weren't looking at the best studies. In this episode of The XX Lab, Dr. Sarah Hill sits down with Dr. Nusa Faric, a health psychology researcher whose meta-analysis pooled the highest-quality trials on hormonal contraception and depression risk. Together they explore why past reviews missed the signal, how synthetic progestins reshape a brain wired for cycling hormones, why adolescent users may be most vulnerable, the “sham period” myth, and what a better contraceptive future could look like. KEY TAKEAWAYS - Conflicting results on the pill and depression often reflect study quality, not a true absence of effect. - Filtering for high-quality trials with large samples and clean controls reveals a link that weaker studies obscure. - Non-oral methods like the hormonal IUD, shot, and patch tend to carry a worse mental health risk profile than the combined pill. - Adolescent users may face longer-lasting effects because the developing brain does not always return to baseline. - Younger women who use hormonal contraception in adolescence are more likely to remain on antidepressants later. - The pill flattens the natural hormonal cycle into a near-constant synthetic signal. - The monthly bleed on the pill is a “sham period,” not a true menstrual period. Timestamps The Pill and Depression: What Science Really Shows (00:00) Being Disbelieved Sparked This Research (02:00) How One Master's Review Became a Meta-Analysis (05:00) What Is a Meta-Analysis, Explained Simply (09:30) The "Sham Period" Myth on the Pill (19:30) How Birth Control Rewires a Hormonal Brain (21:20) Why Pill and Depression Studies Keep Conflicting (24:00) Why Teens on the Pill Are Most Vulnerable (44:40) Oral vs Non-Oral Birth Control Risk Compared (54:50) Your Pill Side Effects Are Not Imagined (01:04:30) Guest Bio Dr. Nusa Faric holds a PhD in health psychology and informatics from University College London and is now a Research Fellow at the University of Edinburgh. Her work sits at the intersection of women's health, hormonal contraception, digital health, and mental health. Meta-analysis (European Journal of Obstetrics and Gynecology and Reproductive Biology, 2026, open access): https://doi.org/10.1016/j.ejogrb.2026.115144 University of Edinburgh research profile: https://www.research.ed.ac.uk/en/persons/nuša-farič-jeriha ***
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#18
September 14 · 1 hr 55 min
How Sex Hormones Shape the Male & Female Brain | Sarah E. Hill & David Puts | #18
You've been told the pill and the hormonal IUD act "locally," that they barely touch the rest of you. What if science says almost the opposite? Most of us treat hormones as background chemistry for periods and pregnancy, when they are really broadcast signals traveling everywhere blood goes, switching genes on and off in the brain, the muscles, and far beyond the reproductive organs. In this episode of The XX Lab, Dr. Sarah Hill sits down with Dr. David Puts, evolutionary anthropologist and neuroendocrinology researcher at Penn State, to explore what hormones actually are, how they shape the brain before birth, the myth of "locally acting" hormones, what the menstrual cycle does to attraction, and how the birth control pill nudges desire and partner choice. KEY TAKEAWAYS: - Hormones act by binding a receptor that regulates gene expression, changing what a cell makes. - A purely "locally acting" hormone does not hold up; if it reaches the bloodstream, it travels. - Most women on the hormonal IUD stop ovulating, evidence the hormone reaches systemic levels. - Sex hormones shape the brain, not only the reproductive organs, from before birth. - CAH and IHH serve as natural experiments for studying prenatal hormone effects on behavior. - The "masculine voices when fertile" preference is weaker and less consistent than popular science suggests. Timestamps Why Men And Women Are So Different (00:00) What Hormones Actually Do In Your Body (08:43) Is There Really A Locally Acting Hormone (11:07) What Sex Hormones Do Besides Reproduction (13:55) How Hormones Shape The Developing Brain (18:00) CAH And IHH: Nature's Hormone Experiments (33:55) What The Menstrual Cycle Does To Attraction (40:09) How The Pill Changes Attraction And Libido (49:45) How Low Estrogen Affects Attraction (57:32) What Anogenital Distance Reveals About You (01:11:52) Does Puberty Rewire The Brain (01:19:13) Why Disease Hits Men And Women Differently (01:25:25) Why We Choose Mates With Good Genes (01:33:10) Guest Bio Explore David Puts’ research, publications, and academic work: https://www.researchgate.net/profile/David-Puts Google Scholar: https://scholar.google.com/citations?user=fZ_ZqrMAAAAJ&hl=en *** Guest Bio Dr. David Puts is Professor of Anthropology and Psychology at Penn State and Co-Director of the Center for Human Evolution and Diversity, where he directs the Behavioral Endocrinology and Evolution Lab. His work bridges the "why" of evolutionary theory with the "how" of hormones and gene expression, studying the sexual differentiation of the brain and behavior, mating psychology, and sex differences. Explore David Puts’ research, publications, and academic work: https://www.researchgate.net/profile/David-Puts Google Scholar: https://scholar.google.com/citations?user=fZ_ZqrMAAAAJ&hl=en
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#17
September 7 · 1 hr 23 min
WHOOP Scientist: The #1 Habit for Better Sleep, Recovery & Long-Term Health | Dr. Kristen Holmes #17
Your WHOOP recovery score dips, you slept fine, you did everything right, so why does the number look worse? What if that "bad" reading is your body working exactly as it should? In this episode of The XX Lab, Dr. Sarah Hill sits down with Dr. Kristen Holmes, Global Head of Human Performance and Principal Scientist at WHOOP, to explore what wearables really measure in women, resilience to hormonal change, sleep-wake regularity, mental health as the foundation of performance, and her new book, Aligned. Whether you are curious about what your wearable is telling you, navigating perimenopause, or rethinking how mental health, sleep, and recovery connect, this conversation offers a women-first lens on performance and resilience. KEY TAKEAWAYS: - A lower recovery score during your cycle is often normal biology, not a sign you did something wrong. - Women on hormonal birth control show fewer perturbations, and their data can resemble a man's. - Cardiovascular amplitude is a novel, patented marker of resilience that HRV and resting heart rate miss. - The resilience you build in your 20s and 30s shapes your perimenopause and menopause experience. - If your mental health is not right, top fitness and performance stop mattering very quickly. - Sleep-wake regularity predicts disease better than sleep duration and supports mental health too. Timestamps The Scientist Behind Your WHOOP Recovery Score (00:00) From Elite Coaching to Human Performance Science (02:25) Availability: The Metric That Predicts 86% of Success (04:45) Leaving Princeton to Scale Recovery at WHOOP (10:15) Why Your Cycle Changes Your Recovery Score (14:55) Resilience to Hormonal Change and Amplitude (18:10) Why Building Resilience Starts in Your 20s and 30s (24:15) The New Book Aligned and Losing Her Mother (32:45) Why Mental Health Is the Foundation of Performance (44:00) Sex Differences in Sleep and the Light Diet (55:25) The HEAL Framework and Sleep-Wake Regularity (1:11:55) Guest Bio Dr. Kristen Holmes is the Global Head of Human Performance and Principal Scientist at WHOOP, where she has led research on recovery, sleep, and women's health since 2016. A two-sport All-American at Iowa and seven-year US National Field Hockey Team member, she was one of the most successful coaches in Ivy League history at Princeton, winning 12 league titles in 13 seasons. A psychophysiologist, her work focuses on how psychology, physiology, sleep, and recovery shape human performance. She is the author of Aligned. - Aligned (book): https://a.co/d/aligned - Instagram: https://www.instagram.com/kristen_holmes2126 - WHOOP: https://www.whoop.com *** 📘 Go deeper with Dr. Sarah Hill's books, both science-backed guides to understanding your own biology: The Period Brain: the new science of why we PMS and PMDD, and how to feel your best all month long 👉 https://www.amazon.com/Period-Brain-Science-Manifesto-Women/dp/0063382474 This Is Your Brain on Birth Control: how the pill shapes mood, attraction, and behavior in ways most women are never told 👉 https://www.amazon.com/This-Your-Brain-Birth-Control/dp/0525536035
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#16
August 31 · 1 hr 8 min
Shira Boehler: The Cancer That Kills More Young Women Than Breast, Ovarian & Colon Combined | #16
You did everything right, kale, running, annual blood tests, and still ended up with a mass in your lung. So why does the disease killing more young, healthy women than breast, ovarian, and colon cancer combined still carry the stigma of a smoker's disease? In this episode of The XX Lab, Dr. Sarah Hill sits down with Shira Boehler, lung cancer survivor, author of the New York Times bestseller One Scan Saved My Life, and founder of the Cancer Doesn't Care foundation, to explore why lung cancer is rising in young non-smoking women, sex differences in medicine, the toll on caregivers, and why a $200 scan could rewrite the guidelines. KEY TAKEAWAYS: - Lung cancer kills more young, healthy women than breast, ovarian, and colon cancer combined, yet gets a fraction of the awareness and funding. - "If you smoke, you get lung cancer" has curdled into "if you have lung cancer, you smoked", a stigma that keeps survivors silent. - The real truth is simpler and scarier: if you have lungs, you can get lung cancer. - Non-smoking women in parts of Asia get lung cancer at higher rates than smoking men, pointing to a female health crisis science hasn't explained. Timestamps One Scan Saved My Life: Shira Boehler's Story (00:00) Pushing for the Low-Dose CT Doctors Dismissed (05:37) Why Lung Cancer Kills More Young Women Than Breast Cancer (08:52) The Myth That Only Smokers Get Lung Cancer (14:08) How Women's Heart Attack Symptoms Went Ignored for Decades (21:31) How She Told Her Kids She Had Cancer (27:20) Why Your Surgeon Should Warn You About Depression (39:32) The Ripple Effect: Susan Wojcicki and Hidden Costs (43:52) What to Say When Your Doctor Refuses the Scan (53:00) How to Get a Low-Dose CT for Under $500 (56:14) If She Could Rewrite the Screening Guidelines (1:04:36) The One Thing She Wants Every Woman to Do (1:10:07) Guest Bio Shira Boehler is a lung cancer survivor and author of One Scan Saved My Life, a New York Times bestseller chronicling her diagnosis as a healthy, non-smoking runner and mother of four. Diagnosed at 43 after a mass was caught incidentally, she had half her right lung removed and was declared cancer-free at stage one. She founded the Cancer Doesn't Care foundation, which funds low-dose CT screenings for those who cannot afford them, and focuses on early detection, dismantling stigma, and modernizing screening guidelines. - Book: One Scan Saved My Life https://a.co/d/006gnafi - Foundation: https://www.cancerdoesntcare.com - Instagram: https://www.instagram.com/shiraboehler/ *** The Period Brain: the new science of why we PMS and PMDD, and how to feel your best all month long https://www.amazon.com/Period-Brain-Science-Manifesto-Women/dp/0063382474
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#15
August 24 · 1 hr 18 min
Why Does Attraction Change in Relationships? with Dr. Andrea Meltzer | #15
Why does attraction change once you're in a long-term relationship? And could hormones, physical attractiveness, and even what happens after sex shape how satisfied couples remain over time? On this episode of The XX Lab, Dr. Sarah Hill sits down with Dr. Andrea Meltzer, Professor of Social Psychology at Florida State University, to explore the science of attraction, mate choice, sexual satisfaction, and long-term relationship health. Dr. Meltzer has spent years studying how individual differences and interpersonal dynamics shape romantic relationships. Her research uses longitudinal and experimental methods to examine newlywed couples, giving researchers a rare look at how attraction, stress, sexual satisfaction, and perceptions of partners influence relationship outcomes over time. Does physical attractiveness predict relationship satisfaction? The conversation begins with a surprising finding about physical attractiveness and relationship satisfaction. Dr. Meltzer explains why attractiveness can matter differently for men and women once a relationship becomes established, and why the person you find attractive from across the room isn't necessarily the same person you experience as attractive when they're your partner. Sarah and Andrea also discuss how people tend to see their romantic partners more positively than outside observers do. Relationship satisfaction and commitment can shape how attractive we perceive our partners to be, suggesting that attraction isn't simply a fixed reaction to someone's physical appearance. How can couples protect relationship satisfaction over time? Relationship satisfaction tends to decline on average over the course of marriage, but Dr. Meltzer emphasizes that couples differ considerably in how steep that decline is. Her research points toward factors that may help buffer against those changes. The conversation ends with practical ideas for maintaining strong relationships, including positive communication, supporting a partner's goals, and creating novel experiences together. Dr. Meltzer also highlights something couples may underestimate: the role that outside stress can play inside the relationship. This episode is for anyone curious about the science of attraction, hormones, sex, mate choice, marriage, and what actually helps romantic relationships stay satisfying over time. KEY TAKEAWAYS Relationship attraction is shaped by context, meaning a partner's personality, behavior, status, and relationship dynamics can matter alongside physical appearance. Sexual afterglow can last roughly 24 to 48 hours after sex, potentially helping couples maintain a sense of connection between sexual experiences. Stronger sexual afterglow has been associated with greater relationship satisfaction months later, suggesting that the effects of sex may extend beyond the sexual encounter itself. Sexual frequency appears to matter up to a point, while sexual afterglow may become particularly relevant once couples are already meeting their desired level of sexual frequency. Positive communication and novel experiences together may help protect relationship satisfaction, while outside stress is an often-underestimated influence on romantic relationships. GUEST BIO Dr. Andrea Meltzer is a Professor of Social Psychology at Florida State University whose research examines relationship development, maintenance, and well-being. Her work focuses on how individual differences, stress, sexual satisfaction, partner perceptions, and interpersonal dynamics shape romantic relationship outcomes over time. Follow The XX Lab for more science-based conversations about women's health, psychology, relationships, and human behavior.
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#14
August 17 · 1 hr 10 min
7 Surprising Things Your Voice Reveals About You with Dr. Greg Bryant | #14
What does your voice say before you even finish a sentence? Long before someone processes your words, their brain has already begun decoding your voice. In a fraction of a second, people can make surprisingly accurate judgments about your age, biological sex, emotional state, health, native language, and even aspects of your social relationships. The fascinating part? Most of this happens automatically. In this episode of The XX Lab, Dr. Sarah Hill sits down with cognitive scientist Dr. Greg Bryant, Professor and Chair of Communication at UCLA, to explore the hidden science of human vocal communication. Drawing from evolutionary psychology, cognitive science, and behavioral biology, Dr. Bryant explains why our voices evolved to carry so much information and how humans have become remarkably skilled at interpreting those signals. Sarah and Greg discuss how listeners detect subtle vocal cues associated with illness, strength, stress, confidence, and authenticity. They also explore why these abilities likely evolved to help humans navigate cooperation, competition, caregiving, and mate selection. Whether you're interested in psychology, neuroscience, communication, women's health, or human behavior, this conversation offers a fascinating look at one of the most overlooked aspects of everyday life: the science hiding inside every conversation. KEY TAKEAWAYS Your voice communicates far more than the words you speak, including biological and social information. Listeners can often estimate a person's age, biological sex, emotional state, and native language after hearing only a brief vocal sample. Subtle vocal characteristics can provide clues about illness, physical condition, and overall health. Humans evolved specialized abilities to rapidly interpret vocal signals because they support cooperation, survival, and social decision-making. Genuine laughter carries different acoustic characteristics than polite or socially motivated laughter. Vocal communication combines language, context, and sound into a remarkably rich social signal. Evolutionary psychology helps explain why humans are exceptionally tuned to vocal cues. Understanding how voices shape perception can improve communication, relationships, and social awareness. GUEST BIO Dr. Greg Bryant is a cognitive scientist who studies communication and cognition from an evolutionary perspective. He serves as Professor and Chair of the UCLA Department of Communication, where his research examines vocal communication, laughter, music perception, social cognition, cultural evolution, and behavioral biology. His work combines laboratory experiments, cross-cultural field research, acoustic analysis, and comparative studies across species. GUEST LINKS Spotify (Music) https://open.spotify.com/artist/7txtvHi6cCtJJRhZX2zBlJ HOST LINKS Website https://www.sarahehill.com Instagram https://www.instagram.com/sarahehillphd LinkedIn https://www.linkedin.com/in/sarahehillphd If you enjoyed this conversation, follow The XX Lab, leave a review, and share this episode with someone who's fascinated by the science of human behavior.
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August 10 · 1 hr 17 min
Why Women Compete Differently Than Men with Dr. Khandis Blake | #13
Are women really less competitive than men, or have we been measuring competition the wrong way? In this episode of The XX Lab, Dr. Sarah Hill sits down with Dr. Khandis Blake, PhD, evolutionary psychologist and researcher, to explore how hormones, competition, confidence, mate preferences, and modern environments shape women's behavior in ways that are often misunderstood. Why do women compete differently than men? Drawing on years of research in evolutionary psychology, Dr. Blake explains why women often compete through different strategies than men, how status and relationships influence those behaviors, and why common stereotypes fail to capture the full picture. Sarah and Khandis discuss the evolutionary pressures that shaped female competition and why cooperation has been just as important to women's success as competition itself. The conversation also explores how hormonal fluctuations across the menstrual cycle can influence confidence, ambition, social behavior, and partner preferences. Together, they unpack what researchers know, what remains uncertain, and why nuance matters when discussing sex differences. How do hormones shape everyday decisions? Sarah and Khandis examine research on hormonal contraception, workplace behavior, mate choice, and the gender pay gap, asking whether biology and modern culture interact in ways that help explain differences in outcomes without reducing them to simple cause-and-effect stories. Whether you're interested in women's health, psychology, relationships, or understanding the science behind human behavior, this episode offers an evidence-based conversation that challenges common assumptions while respecting the complexity of the research. Key Takeaways Women often compete through social and relationship-based strategies rather than direct physical competition. Cooperation and competition have evolved together as complementary survival strategies. Hormonal changes can subtly influence confidence, motivation, and social behavior. Confidence is influenced by both biology and environment rather than either factor alone. Hormonal contraception may affect some aspects of psychology differently across individuals. Mate preferences are flexible and can shift depending on context and life stage. Evolutionary psychology helps explain behavioral patterns without determining individual outcomes. Biological differences should inform research without reinforcing stereotypes. Understanding women's psychology requires considering both culture and biology. Scientific nuance is essential when discussing hormones, behavior, and sex differences. Guest Bio Khandis Blake is an evolutionary psychologist whose research examines female competition, hormones, mating psychology, status, and human behavior. Her work explores how evolutionary science can help explain modern social dynamics while challenging common misconceptions about women. Enjoyed this conversation? Follow The XX Lab and leave a review to help more people discover evidence-based conversations about women's health, psychology, and human behavior.
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#12
August 3 · 1 hr 26 min
The Wellness Industry Isn't Making Us Healthier with Sarah Ann Macklin | #12
We have more health information than ever before, yet we're getting sicker, more stressed, and more overwhelmed. So what's missing? In this episode of The XX Lab, Dr. Sarah Hill welcomes Sarah Ann Macklin, registered nutritionist, former international model, host of Live Well Be Well, and author of Healthy Shouldn't Be This Hard. Together, they explore why today's $8.5 trillion wellness industry isn't delivering better health and why the missing ingredient may have less to do with information and more to do with how we relate to ourselves. Why isn't more health advice making us healthier? Sarah Ann shares her remarkable journey from the fashion industry to clinical nutrition, revealing how years of chasing perfection ultimately reshaped her understanding of health. She explains why fear-based wellness messaging often backfires, how self-worth influences health behaviors, and why sustainable habits begin with self-compassion rather than self-criticism. The conversation also explores mindset, stress, body awareness, food insecurity, nutrition science, and the fascinating ways our thoughts can influence our physiology. Sarah and Sarah discuss why understanding your body's signals is essential for making lasting lifestyle changes and why health doesn't have to be built on restriction or guilt. What does it really mean to work with your body? From the science of interoception to practical advice about whole foods, supplements, cooking, and behavior change, this episode offers an evidence-based roadmap for building a healthier relationship with food and with yourself. Rather than chasing perfection, Sarah Ann explains why learning to trust your body may be one of the most powerful health interventions available. Whether you're overwhelmed by conflicting nutrition advice, struggling to build healthier habits, or simply looking for a more compassionate approach to wellness, this conversation offers practical tools backed by science. Key Takeaways More health information doesn't automatically lead to better health outcomes. Self-compassion is a critical foundation for long-term behavior change. Fear-based wellness marketing often undermines healthy habits. Whole foods support healthier body signals than highly processed foods. Mindset can influence physiological responses to nutrition and exercise. Chronic stress affects both physical and mental well-being. Supplements should support, not replace, a nutrient-rich diet and should be guided by appropriate testing when possible. Sustainable health comes from working with your body instead of constantly trying to fix it. Guest Bio Sarah Ann Macklin is a registered nutritionist, former international model, founder of the Be Well Collective, host of the Live Well Be Well podcast, and author of Healthy Shouldn't Be This Hard. Her work focuses on evidence-based nutrition, behavior change, and helping people build healthier relationships with food and themselves. Guest Links Website: https://www.sarahannmacklin.com Live Well Be Well Podcast Instagram: @sarahannmacklin Book: Healthy Shouldn't Be This Hard Be Well Collective If you enjoyed this conversation, follow The XX Lab and leave a review to help more listeners discover science-backed conversations about health, psychology, and human behavior.
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July 26 · 1 hr 41 min
Why Are We So Lonely Despite Being So Connected? with Dr. Bill von Hippel | #11
We're more connected than any generation in history, yet loneliness continues to rise. What happened? In this episode of The XX Lab, Dr. Sarah Hill sits down with Dr. Bill von Hippel, evolutionary psychologist and bestselling author of The Social Paradox, to explore why the very freedoms that define modern life may also be driving us further apart. Why does modern life leave so many people feeling isolated? Drawing from evolutionary psychology, Bill explains how humans evolved to depend on tight-knit communities for survival and why today's culture of independence, mobility, and individual achievement often clashes with those ancient social instincts. Together, he and Sarah unpack the surprising ways technology, urbanization, modern dating, and changing family structures have reshaped our relationships and our well-being. The conversation explores why autonomy and connection often pull us in opposite directions, how our brains respond to social isolation, and why loneliness isn't simply an emotional experience but a biological signal that evolved to keep us connected to others. Can we build happier lives by understanding our evolutionary past? Bill shares practical insights from The Social Paradox, discussing why meaningful relationships remain one of the strongest predictors of happiness, health, and longevity. He also explains how modern environments amplify stress, why friendship becomes harder in adulthood, and what individuals can do to cultivate stronger social networks despite the demands of contemporary life. Whether you're interested in psychology, relationships, health, or understanding why modern life often feels disconnected, this episode offers a thoughtful, science-backed perspective on one of the defining challenges of our time. Key Takeaways Human brains evolved for close-knit communities rather than large, anonymous societies. Loneliness functions as a biological signal that encourages social reconnection. Modern independence often comes with hidden psychological costs. Strong relationships consistently predict better physical and mental health. Evolutionary mismatch helps explain why modern environments can increase stress and isolation. Technology connects us efficiently but doesn't always satisfy our need for meaningful social bonds. Adult friendships require intentional effort because modern lifestyles reduce repeated social contact. Balancing autonomy with connection leads to greater long-term well-being. Understanding our evolutionary history provides valuable context for today's mental health challenges. Small, consistent investments in relationships can have an outsized impact on happiness. Guest Bio Dr. Bill von Hippel is an evolutionary psychologist, professor, and bestselling author of The Social Paradox. His research explores human behavior, social relationships, happiness, evolutionary psychology, and the ways modern environments shape our minds and well-being. Guest Links Website: https://billvonhippel.com Book: The Social Paradox Research publications University profile (if included in your transcript resources) If you enjoyed this conversation, follow The XX Lab and leave a review to help more listeners discover evidence-based conversations about women's health, psychology, and human behavior.
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#10
July 19 · 1 hr 25 min
Why Dating Apps Make Commitment Harder | #10 Dr. Cari Goetz
Dating apps promised more choice. But what if more choice is making relationships harder to build? In this episode of The XX Lab, Dr. Sarah Hill sits down with Dr. Cari Goetz, evolutionary psychologist and relationship researcher, to explore the psychology of mate switching, online dating, sexual exploitability, casual sex, and the hidden forces shaping modern relationships. Cari explains how humans evolved in environments with relatively small pools of potential partners, and why today's endless swiping culture may be activating psychological mechanisms that were never designed for thousands of options. The conversation dives into the paradox of choice, why people often become less satisfied when they have more alternatives available, and how dating apps may subtly encourage a constant comparison mindset. How does online dating affect long-term relationships? Sarah and Cari unpack research suggesting that the way people select partners online may differ dramatically from how humans historically chose mates. Instead of evaluating a few potential partners holistically, many daters begin filtering candidates by isolated traits, which can make commitment more difficult and increase the temptation to keep searching for someone better. The discussion also explores practical strategies for using dating apps without falling into a perpetual mate-switching mentality. If you've ever wondered why dating can feel so exhausting, why casual sex can be emotionally complicated, or why modern relationship advice often feels disconnected from human psychology, this episode offers a nuanced, research-based perspective. Key Takeaways The paradox of choice can make people less satisfied with a dating partner when they perceive endless alternatives. Limiting the number of dating profiles you evaluate may improve decision-making and reduce comparison fatigue. Early-stage dating is often when people are most vulnerable to a constant "someone better might be out there" mindset. Being intoxicated, fatigued, or appearing less aware can increase perceptions of vulnerability. Men who are low in agreeableness and highly interested in casual sex were more likely to perceive women as sexually exploitable. Sexual regret and sexual disappointment are distinct emotions and may be conflated in some research. Women's casual sex experiences are often shaped by potential costs such as pregnancy, STIs, and reputational concerns. Women's sexual motivation may increase during the years when fertility is beginning to decline, potentially reflecting an evolved reproduction-expediting mechanism. Guest Bio Dr. Cari Goetz is an evolutionary psychologist whose research focuses on mating psychology, mate switching, sexual exploitation, relationship dynamics, and reproductive behavior. She is a faculty member at California State University, San Bernardino and has published extensively on human mating strategies and social behavior. Guest Links CSUSB Profile: https://www.csusb.edu/profile/cgoetz LinkedIn: https://www.linkedin.com/in/cari-goetz-62725542/ Google Scholar: https://scholar.google.com/citations?user=BIKau3cAAAAJ&hl If you enjoyed this conversation, follow The XX Lab and leave a review to help more listeners discover evidence-based discussions about women's health and human behavior.
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#9
July 12 · 1 hr 44 min
The Dirty Little Secret of Female Friendship — What Science Actually Says | #9 Dr. Tania Reynolds
If a friend is gossiping to you, she's probably gossiping about you too. That's the unsettling rule of thumb Dr. Tania Reynolds lives by—and in this episode, she explains why. In this episode of The XX Lab, Dr. Sarah Hill sits down with Reynolds, a social psychologist and leading researcher on female friendship, cooperation, and competition, to unpack the evolutionary science behind how women build relationships—and why those relationships carry such high stakes. Bless Her Heart Dr. Reynolds explains the "bless her heart effect," the sneaky way concern-framed gossip lets women damage a rival's reputation while looking kind doing it, and why this strategy works especially well on other women. From there she tells us about the the evolutionary logic behind female-typical aggression—why it's indirect, deniable, and built around exclusion rather than confrontation—and how the same instincts that helped our ancestors protect their children now show up in group chats, PTA meetings, and office politics. Sexual Policing, Female Bosses, and Women’s Mental Health We also get into some of the more uncomfortable data: why women police other women's sexuality more than men do, why attractive or sexually open women tend to become targets, and why having a female boss is correlated with lower job satisfaction than having a male one (and what bosses can actually do about it). We close on the modern mental health paradox—why women report feeling worse than ever despite unprecedented material progress—and talk through practical ways to catch these instincts in ourselves before they run the show. Key Takeaways The "bless her heart effect" and concern-framed gossip Why women are better at detecting harm to their own reputation than harm they cause others The evolutionary logic of indirect aggression, exclusion, and female friendship jealousy Sexual double standards and who really enforces them Female bosses, workplace satisfaction, and status asymmetries between women The "Queen Bee" phenomenon and whether it's real Social comparison, social media, and the gender gap in anxiety and depression Practical strategies for catching competitive instincts and building better female friendships Guest Bio Dr. Tania Reynolds is a social psychologist whose research explores female friendships, cooperation, aggression, social relationships, and evolutionary psychology. Guest Links psych/tania-reynolds scholar.google/citations psychologytoday/tania-reynolds If you enjoyed this episode, follow The XX Lab and leave a review to help more listeners discover science-backed conversations about women's health and human behavior. Chapter Timestamps 02:08 Meet Dr. Tania Reynolds 07:24 Why Female Friendships Matter 16:18 The Evolution of Women's Social Bonds 27:41 Are Women Really More Competitive? 39:12 Gossip: Harmful or Helpful? 50:35 Understanding Relational Aggression 1:02:44 Cooperation vs. Competition 1:14:53 Friendship, Stress, and Mental Health 1:26:48 Why Belonging Is a Biological Need 1:38:56 What We Get Wrong About Women's Relationships
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#8
July 6 · 1 hr 45 min
The Study That Got Pulled From CNN: How your hormones affect you | #8 with Dr. Kristina Durante
How much of your behavior is shaped by biology without you even realizing it? From the clothes you choose to the people you find attractive, your hormones may be influencing more than you think. In this episode of The XX Lab, Dr. Sarah Hill sits down with evolutionary psychologist Dr. Kristina Durante to unpack the fascinating science behind hormones, decision-making, consumer behavior, relationships, and social dynamics. Drawing on years of research, Kristina explains how subtle biological shifts can affect everyday choices while challenging many of the misconceptions that surround this work. Can hormones influence behavior without controlling it? Dr. Durante shares groundbreaking studies on ovulation, attraction, and purchasing decisions, discussing why women may behave differently across the menstrual cycle and how these patterns fit within an evolutionary framework. She also addresses the media firestorms that often erupt around this research and explains why nuance matters when interpreting scientific findings. What can evolutionary psychology teach us today? Sarah and Kristina dive into the challenges of communicating controversial science, the importance of replication and critical thinking, and the ways modern environments interact with ancient psychological adaptations. They also discuss social belonging, online behavior, and why our brains are still wired for close-knit communities despite living in a hyperconnected world. Whether you're interested in women's health, psychology, neuroscience, marketing, or human behavior, this episode offers a thoughtful look at how evolution continues to influence everyday life in ways both subtle and surprising. Key Topics Covered How hormones can shape everyday decisions and preferences The science behind ovulation and attraction research What evolutionary psychology says about human behavior Why consumer choices may shift across the menstrual cycle The difference between biological influence and biological determinism Media misconceptions surrounding hormone research How social belonging affects mental and emotional well-being The challenges of studying sex differences in science Why context matters when interpreting behavioral research Practical reasons to understand your own biology without fear or stigma Guest: Dr. Kristina Durante, evolutionary psychologist and researcher whose work explores hormones, decision-making, consumer behavior, and social psychology. If you enjoyed this conversation, follow The XX Lab and leave a review to help more listeners discover evidence-based discussions about women's health and human behavior. Chapter Timestamps 02:18 Meet Dr. Kristina Durante 07:12 What Evolutionary Psychology Gets Right 14:45 Why Hormones Influence Behavior 23:27 The Research on Ovulation and Clothing Choices 34:36 Attraction, Dating, and the "Sexy Guy" Studies 43:58 Consumer Behavior and Hormonal Shifts 51:24 The Media Firestorm Around Hormone Research 1:03:47 Why Science Needs Nuance, Not Headlines 1:16:18 Biological Differences Without Stereotypes 1:28:52 Modern Life vs. Ancient Psychology 1:40:11 Social Belonging and the Need for Community 1:51:23 Final Thoughts and Key Takeaways
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#7
June 29 · 1 hr 20 min
We're in an Age of Hormonal Hypocrisy | #7 with Dr. Lara Briden
Why are women told their hormones are essential at 45 — that losing them is a health crisis, that we must replace them to protect our brains and bones and hearts — while those same hormones are routinely shut down in women in their 20s with barely a second thought? That contradiction is at the center of today's conversation. And once you see it, you can't unsee it. On Today’s Episode, Dr. Sarah Hill welcomes Lara Briden, ND, internationally recognized naturopathic doctor and bestselling author specializing in women's hormonal health. Together they explore why menopause deserves to be viewed through an evolutionary lens rather than as a hormone deficiency, and how misconceptions about estrogen, progesterone, HRT, and menstrual cycles continue to shape women's healthcare. The discussion covers the surprising biology behind why humans experience menopause, what differentiates bioidentical progesterone from synthetic progestins, and why many women receive incomplete or misleading information about hormonal treatments. Lara also explains how cycle literacy can transform the way women understand their own bodies and make informed health decisions. Can evolutionary biology improve women's healthcare? Drawing from research and decades of clinical experience, Lara and Sarah unpack common misconceptions surrounding PCOS, endometriosis, ovulation, hormonal birth control, and the menstrual cycle itself. They discuss why symptoms shouldn't automatically be viewed as malfunctions, the importance of preserving ovulation when possible, and how clinicians can better support women through every reproductive stage. Whether you're approaching perimenopause, navigating menopause, working in healthcare, or simply trying to understand your hormones, this episode offers practical insights grounded in science instead of fear. Key Takeaways ● Menopause is a normal biological transition that may offer evolutionary advantages rather than representing hormone failure. ● Understanding bioidentical progesterone vs. synthetic progestins can improve conversations about hormone replacement therapy. ● Learning to recognize signs of healthy ovulation provides valuable information about overall hormonal health. ● Viewing the menstrual cycle as a vital sign can improve long-term women's health awareness. ● Many symptoms attributed solely to aging may have multiple biological explanations worth exploring. ● Evolutionary biology provides useful context for understanding why menopause exists in humans. ● Better education about PCOS management helps women pursue individualized treatment strategies. ● Improved awareness of endometriosis symptoms and diagnosis can shorten delays in receiving care. ● Evidence-based discussions around hormonal birth control help women make informed personal decisions. ● Increasing hormone literacy empowers women to advocate for themselves throughout every life stage.
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