EP 251: Dr. Jerrod Brown on the Gut-Brain Axis — The Hidden Link Between Health and Behavior
What if some of the behaviors correctional professionals label as noncompliance, impulsivity, poor motivation, or treatment failure are being influenced by factors we rarely consider? Dr. Jerrod Brown—the most frequent returning guest in the history of The Criminologist Podcast—returns for another thought-provoking conversation, this time exploring the gut-brain axis and its potential relevance to criminal justice, behavioral health, probation, parole, and correctional practice. The gut and brain are engaged in constant, two-way communication. Emerging research suggests that disruptions in this system may be associated with mood, attention, stress regulation, sleep, fatigue, self-control, and other areas of functioning that justice professionals encounter every day. But this episode is not about turning probation officers into physicians or nutritionists. It is about broadening the lens. The conversation explores how factors such as nutrition, food insecurity, chronic stress, sleep problems, sedentary behavior, and overall physical health may affect a person's ability to engage successfully in treatment and supervision. The discussion also connects these ideas directly to the Risk-Need-Responsivity framework, particularly the Responsivity Principle. If responsivity means creating the conditions in which interventions have the best chance to succeed, should practitioners be paying more attention to the biological and lifestyle conditions surrounding the people they serve? Among the topics explored: • The basics of the gut-brain axis and gut microbiome • Connections between gut health, mood, cognition, and self-regulation • Nutrition, food insecurity, and justice-involved populations • Sleep, stress, trauma, and lifestyle factors • Gut dysbiosis and emerging neurocriminology research • Impulsivity and executive functioning • Lifestyle medicine and the Blue Zones research • The role of nutritionists, dietitians, and multidisciplinary collaboration • Why these issues may represent important responsivity considerations • The danger of interpreting every struggle in supervision or treatment simply as unwillingness or noncompliance Jerrod repeatedly emphasizes an important caution: none of these factors alone explain criminal behavior. Human behavior is complex, and these are pieces of a much larger puzzle. The challenge for practitioners is simpler: Stay curious. Ask better questions. And keep looking beyond the behavior immediately in front of you. Resources mentioned in this episode Examining the Link Between the Human Microbiome and Antisocial Behavior: Why Criminologists Should Care About Biochemistry, Too https://doi.org/10.1080/01639625.2017.1410373 Blue Zones — Power 9 Principles https://www.bluezones.com/resources/principles/ Lifestyle Medicine: Prevention, Treatment, and Reversal of Disease https://www.bluezones.com/wp-content/uploads/2025/08/Lifestyle-Medicine-Prevention-Treatment-and-Reversal-of-Disease.pdf Contact Dr. Jerrod Brown: Jerrod01234Brown@live.com Remember: There is no them. There is only us.