A large observational study of older adults found that people who ate eggs more often were less likely to be diagnosed with Alzheimer’s disease over time, though researchers cannot say eggs themselves were the cause.
A 24-year study found that higher long-term BMI was associated with steeper cognitive decline in older adults, but BMI is only one piece of a much bigger brain health puzzle.
A cross-sectional study found an association between higher ultraprocessed food intake and lower attention scores, even among adults with otherwise healthy diets.
A small human study found links between coffee, mood and the gut microbiome, but it does not prove coffee improves mental health.
A large international study finds distinct gut bacteria patterns in people with Parkinson’s and in some who have not developed symptoms yet.
A new study links the “neuroactive potential” of gut bacteria to cognition and depression in older adults, though the findings are observational and do not show cause and effect.
Not all plant-based diets are created equal, with whole foods linked to lower risk and refined options tied to higher risk.
A small human study suggests glucose doesn’t change how relaxed you feel, but may keep part of the nervous system more alert.
A long-term study found an association with tau protein, though not all markers of Alzheimer’s disease were affected.
A large analysis finds people taking GLP-1 medications had fewer psychiatric-related hospital visits, though researchers say the reasons remain unclear
Long-term data suggest a Mediterranean-style eating pattern may be tied to slower loss of brain volume, though researchers caution it’s not cause and effect
A mouse study suggests heavy alcohol use in early adulthood, especially alongside stress, could affect cognitive flexibility later in life—even after years of not drinking
A large review of global research found that adolescents who spend more time on smartphones are more likely to report emotional overeating, uncontrolled eating and dissatisfaction with their bodies.
A randomized clinical trial found high-dose vitamin D supplements did not reduce COVID hospitalizations or symptom severity, though researchers observed a small signal suggesting fewer long COVID symptoms among participants who took the vitamin.
Researchers found that changes in the gut microbiome linked to a high-fat diet allowed small numbers of bacteria to travel to the brain in mice, pointing to a possible new pathway connecting diet and neurological health.
A new scientific review explains how shifting the brain’s fuel source may calm overactive neurons, reduce inflammation and protect brain cells in people with epilepsy.
Researchers found that matcha tea reduced sneezing in mice with allergy symptoms by dampening activity in a brain region that controls the sneeze reflex.
A mouse study suggests high-fat, high-sugar diets early in life can alter adult feeding behavior, and certain gut-targeted interventions may influence the effect.
A large study found the strongest associations when people ate well in midlife, not just later on.
An animal study suggests the aged brain may be sensitive to fiber-free processed diets, possibly through reduced gut-derived butyrate.
A two-year study suggests people who consumed virgin olive oil rather than refined versions showed more diverse gut microbiota and more favorable cognitive changes over time.
A new clinical study finds cannabis increases food intake by changing how the brain values and responds to food, regardless of age, sex or body weight.
A 12-week program combining strength exercises and protein-rich nutritional drinks was linked to improved physical ability in some nursing home residents with dementia.
A large analysis shows a consistent association between high sugar beverage intake and anxiety symptoms, but researchers say the direction of the relationship remains unclear.
Research suggests reverse osmosis systems may reduce certain contaminants but increase corrosion-related lead under some conditions.
