TL;DR: A 2025 study in Nutrients found that a systematic review of adolescent diet and mental health found the clearest readout for whole dietary patterns, while single nutrients and supplement-style interventions looked less consistent. Key Findings 19 studies reviewed: The review covered six randomized controlled trials and 13 prospective cohort studies. Diet patterns looked clearer: …
TL;DR: A 2026 human microbiome and intervention study in Nature Communications found that coffee drinkers showed distinct gut microbiome composition and lower several microbial metabolites, while caffeinated and decaffeinated coffee shifted stress and mood measures in the intervention phase. Key Findings Study type: a study of habitual coffee intake, caffeinated and decaffeinated coffee, gut microbes, …
TL;DR: A 2026 pilot study in Food & Function found that one month of extra virgin olive oil intake was associated with higher resting-state occipital functional connectivity than regular olive oil in 9 healthy young adults. Key Findings Occipital connectivity was the imaging endpoint: The 9-person neuroimaging substudy came from a larger randomized crossover trial …
TL;DR: A 2025 study in Neurochemistry International from Kindai University showed that oral arginine, a naturally occurring amino acid, blocked the formation of toxic amyloid-beta aggregates in lab tests and reduced amyloid pathology in two well-established mouse models of Alzheimer’s disease — with the authors flagging that the research-grade doses and methods are not equivalent …
TL;DR: A 2026 randomized crossover trial in Cell Metabolism compared natural daylight against standard artificial office lighting in 13 older adults with well-controlled type 2 diabetes and found that natural-daylight days produced more time in a healthy blood-glucose range (about 51% vs 43%), smaller glucose swings, and a metabolic shift toward burning more fat and …
TL;DR: A 2026 medRxiv preprint found that ex-smokers had higher fMRI blood oxygen level dependent (BOLD) responses to high-energy food pictures than adults with obesity or abstinent alcohol dependence, suggesting a brain reward route for post-quitting weight gain. Key Findings 77-person fMRI comparison: Researchers compared 25 ex-smokers, 26 abstinent adults with alcohol dependence, and 26 …
TL;DR: A 2026 study in Alzheimer’s & Dementia: Diagnosis, Assessment & Disease Monitoring found that each 10% higher energy share from ultra-processed foods was associated with lower attention scores and higher modifiable dementia-risk scores in 2,192 dementia-free Australian adults. Key Findings A dementia-free midlife sample anchored the analysis: the Healthy Brain Project included 2,192 Australians …
TL;DR: A 2026 longitudinal study in Appetite following 491 Quebec children found that infants breastfed for at least three to six months showed better inhibitory control — the ability to suppress an automatic response — at age three and a half than infants who were never breastfed, with the largest behavioral benefits in those breastfed …
How Five-Animal Play Matched Probiotics in Prediabetes TL;DR: 4 weeks of Huatuo Five-Animal Play improved glucose control and insulin resistance about as much as bifidobacterium capsules, outperforming low-intensity cycling on several metabolic markers, including Wnt5a. Key Findings Exercise shifted glucose and GLP-1: Researchers randomized 90 people with impaired glucose tolerance to bifidobacterium triple viable capsules, …
Meat Intake Linked to Lower Dementia Risk in APOE4 Carriers TL;DR: In APOE4 carriers, higher total meat intake tracked with lower observed dementia risk over 15 years, while a higher processed-to-total meat ratio moved in the unfavorable direction. Key Findings 2,157 dementia-free adults: The study used the Swedish National Study on Aging and Care-Kungsholmen cohort …
