VitaLonga Daily Brief — October 18, 2026
Sunday, October 18, 2026 · 18 minutes
Valeria and Vitalis on myelin and thinking in older age, deep sleep and growth hormone, resistance training and later death, fiber and absorbed calories, cancers rising under age fifty, urinary infections in care homes, a fat-burning switch in immune cells, renewable immune-cell progenitors, an experimental gut compound and fatty liver in animals, and stress, cortisol, and emotional memory. Educational only.
Stories from this day
- In obese male mice, seven strength sessions shrank visceral fat cells without a change in body weight · UNICAMP / Life Sciences
- In nearly 1,500 adults, an older-looking brain lined up with specific gut bacteria and weaker working memory · UCLA / eBioMedicine
- A review of 22 studies found dairy trans fats were not tied to higher heart disease or type 2 diabetes · University of Reading / Nutrition Research
- In mice, olive oil before glucose slowed stomach emptying and blunted the blood-sugar rise · Kyoto University / Diabetes
- Across 14 trials and 763 women, adding protein, amino acids, or creatine to exercise did not clearly increase muscle mass · International Journal of Medical Sciences
- In healthy adults averaging age 72, six months of intervals kept lean tissue while easier workouts did not · University of the Sunshine Coast / Maturitas
- In University of Texas students wearing trackers, more frequent activity lined up with more deep sleep · University of Texas at Austin / Journal of Physical Activity and Health
- In mice, deep sleep and growth hormone formed a two-way circuit that also pushed the brain toward waking · UC Berkeley / Cell
- In flies and aging mice, exercise lowered DEAF1 and rebalanced a growth signal tied to muscle repair · Duke-NUS / PNAS
- Across 7 trials and 608 postmenopausal women, creatine plus resistance training lined up with a small gain in lean mass · Journal of the International Society of Sports Nutrition
- In 5,203 adults ages 80 and older in China, a vegetarian pattern lined up with lower odds of reaching 100, mainly when body weight was low · Fudan University / American Journal of Clinical Nutrition
- In ovaries from 28 women ages 50 to 75, the tissue kept remodeling for decades after menopause · Northwestern University / Buck Institute / Aging Cell
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