VitaLonga Daily Brief — October 20, 2026

Tuesday, October 20, 2026 · 19 minutes

Valeria and Vitalis on a blood vessel protein and an Alzheimer’s risk gene, brain immune cells and sleep in Alzheimer mice, daily steps and tau in older adults, four years of lifting in older men, nine years of cycling and aerobic capacity, five biological forms of fatty liver disease, taste buds more than a year after COVID, protein supplements and muscle in women, olive oil before sugar in mice, and movement and deep sleep in students. Educational only.

Stories from this day

Impact of habitual physical activity and age on T cell metabolism and activation via β2-adrenergic receptor modulation · Frontiers in Aging
A Scientific American report says a caffeine-flush supplement sold online has no human trial and a flagged painkiller mix · Scientific American
In a four-country survey, nail detachment was reported by 39 percent of GLP-1 users and 9 percent of people who never took them · EADV Congress 2026 briefing via ScienceDaily
In joint fluid from six patients, the same T cells returned, more inflamed, when immunotherapy arthritis flared again · MD Anderson / Cancer Immunology Research
Across several deep-brain-stimulation cohorts, lasting depression relief lined up with three white-matter pathways · Mount Sinai / American Journal of Psychiatry
In mice whose arthritis had quieted, restraint stress brought joint inflammation back through a fat-and-IL-6 signal · Chiba University / Science Advances
In 28 people with taste loss more than a year after COVID-19, sweet, bitter, and savory signals were weaker · University of Colorado Anschutz / Chemical Senses
In Alzheimer's-model mice, removing most microglia restored more than two hours of sleep without clearing plaques · University of Kentucky / Alzheimer's & Dementia
In mice carrying APOE4, fibronectin around brain vessels was nearly double, and lowering it tightened the barrier · Columbia University / Nature Aging
In more than 4,600 patients, fatty liver disease split into five subtypes with different complication risks · Mayo Clinic / Nature Communications
In 18 sedentary adults ages 65 and older, three months of blueberry powder did not beat placebo on mood · The Journal of Nutrition, Health and Aging
Across 13 reviews and more than 32,000 people, exercise lined up with better fertility measures in women and in men · Journal of Global Health

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