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- Meta-Analysis Links Daily Nut Intake to Lower Hypertension Risk
- Probiotics May Protect From Signs of Early Cognitive Decline, Clinical Trial Finds
- Late-Night Snacking Could Be Putting Your Liver at Risk
- Can drinking tea help protect against cardiovascular disease?
- US drinking water could contain double the reported PFAS levels, model estimates
A systematic review and dose-response meta-analysis published in the British Journal of Nutrition found that regular nut consumption is associated with a lower risk of developing hypertension, researchers said.
Participants who ate the most nuts had a 16% lower risk of high blood pressure compared with those who ate the least. Eating about a handful of nuts each day was associated with a 20% lower risk of developing hypertension, according to a new analysis. The largest reduction, 26%, appeared at about 30 grams per day compared with none, a level that aligns with several European and North American dietary guidelines.
The studies followed participants aged 18 to 87. The dose-response analysis indicated a curved relationship: benefit rose with intake and then leveled off, the researchers said. Eating far more than 30 grams daily did not appear to add much extra protection based on available data.
The studies followed participants aged 18 to 87. The dose-response analysis indicated a curved relationship: benefit rose with intake and then leveled off, the researchers said. Eating far more than 30 grams daily did not appear to add much extra protection based on available data.
The findings add to a growing body of evidence linking nut intake to cardiovascular benefits. tary guidelines that recommend nuts as part of a heart-healthy diet
Probiotics May Protect From Signs of Early Cognitive Decline, Clinical Trial Finds Chonnam National University Medical School (Korea), October 20 2026 (Science Alert)
A rigorous new clinical trial has now found evidence that certain probiotic mixes may protect from some initial signs of cognitive decline. Among older adults with early cognitive impairment, taking a multistrain probiotic supplement daily for roughly six months resulted in a number of benefits.
Most notably, probiotic use compared to a placebo was associated with better scores on several cognitive tests, and it also led to a significant reduction in plasma levels of pTau181. This is a blood-based biomarker of Alzheimer's disease that measures levels of a phosphorylated form of tau protein in the blood, which can reflect Alzheimer's-related changes in the brain.
Of the 100 participants originally randomized, 40 completed the 24-week probiotic intervention, while another 47 completed the placebo treatment. The probiotic given to participants consisted of three bacterial strains, including subspecies of Bifidobacterium animalis, Limosilactobacillus fermentum, and Levilactobacillus brevis.
Compared to those given a placebo, those who were given a daily probiotic supplement showed a significant reduction in plasma pTau181 by the end of the trial. After just 24 weeks, they also showed significantly better scores on a Clinical Dementia Rating system. After 24 weeks, changes to most inflammatory markers were generally modest. But one marker in particular, called IL-1β, declined to a greater extent in the probiotic group than the placebo group.
Late-Night Snacking Could Be Putting Your Liver at Risk Oregon Health & Science University, October 21, 2026 (SciTech Daily)
Eating late at night may have consequences beyond weight gain and poor sleep. A major study lsuggests that regularly eating after dinner or close to bedtime is associated with a higher risk of liver disease.
The findings, published in Clinical Gastroenterology and Hepatology, link late-night eating to two liver conditions: metabolic dysfunction-associated steatotic liver disease (fatty liver disease) and cirrhosis. For the study, late-night eating was defined as consuming food after dinner or after bedtime.
The research team examined information from self-reported dietary and lifestyle information from nearly 200,000 participants.
The results revealed a notable association. Participants who reported eating late at night had rates of liver disease that were 20% to 30% higher than those who did not report the habit.
Can drinking tea help protect against cardiovascular disease? Chinese Academy of Medical Sciences, October 21 2026 (Eurekalert)
In a Journal of Internal Medicine study, people who drank tea had a lower risk of vascular disease than non–tea drinkers.
Among 485,934 adults in China followed for a median of 9.05 years, there were 14,863 cases of cardiovascular disease, cerebrovascular disease, pulmonary heart disease, and peripheral artery disease. Regular tea consumption was linked with an 11% lower risk of experiencing these outcomes. The lowest risk was estimated at approximately 6–8 cups per day among weekly drinkers.
Black tea showed more consistent inverse associations with vascular disease than green tea. Regarding strength, moderate-strength tea was associated with the lowest risk. Interestingly, “burning hot” tea was associated with an elevated risk of vascular disease.
“Joint analyses showed that tea consumption, smoking status and physical were collectively associated with vascular risk, with the favourable combination of habitual tea consumption, non-current smoking and high physical activity associated with the lowest risk,” the authors wrote.
US drinking water could contain double the reported PFAS levels, model estimates Texas Christian University, October 25 2026 (Eurekalert)
Common ways of reporting perfluoroalkyl and polyfluoroalkyl substances (PFAS)—the man-made, so-called forever chemicals that pose environmental and health threats—could underestimate the concentration of PFAS in United States drinking water by as much as half, finds a study in the Cell Press journal Cell Reports Sustainability. Using a model based on data from across the country, the researchers estimate that by counting PFAS levels that fall below minimum reporting levels as zero, current reports capture only 44% of the average concentration of 25 PFAS in community water systems.
Under the Safe Drinking Water Act, the Environmental Protection Agency (EPA) requires public water systems to monitor the levels of 29 PFAS in drinking water. These chemicals can persist in the environment over a long time, and previous research has linked PFAS exposure to many health issues, including cancer, liver damage, and developmental problems in children.
The EPA’s minimum reporting levels (MRLs) generally means a concentration that most laboratories can reliably measure and report, but it doesn’t suggest that the water tested is PFAS-free or that it’s safe. But these data points are often treated as zero when agencies and researchers summarize average PFAS levels in drinking water.
To investigate the PFAS values below the MRL, the team analyzed more than 1.8 million PFAS measurement records in the national dataset published by the EPA. They found that 98% of PFAS test results were below the MRL.
They found that treating below-limit results as zero captured only 44% of the average concentration of the 25 PFAS that the models estimated across 9,991 community water systems. The typical reports left out more than half of the estimated total.The EPA has set legally enforceable limits covering six PFAS in drinking water, including perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS), that have been linked to serious health problems. When counting below-limit results as zero, the national average concentration is about 2.6 nanograms per liter in drinking water for the six chemicals. But the team’s model estimates that, in reality, the average could be 5.2 nanograms per liter
