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npj Aging · 17 Sept 2026 · Exercise

Three months of midlife exercise lifted mood, not pattern-separation, in the NeuroFit RCT

Study (randomized controlled trial). Sahand Farmand and colleagues report in npj Aging (doi 10.1038/s41514-026-00439-w) on 52 previously inactive UK adults aged 45–65 (BMI 20–30). Twenty-seven did three weekly online classes (aerobic, resistance, combined) for 12 weeks versus 25 controls. The primary outcome, mnemonic pattern separation, did not change (β = 0.33, p = 0.26). Depressive symptoms on PHQ-9 fell (β = −1.18, adjusted p = 0.011) even in people without depression, and an in-vitro hippocampal-progenitor assay shifted. Small trial; mood change is not a dementia result. Educational exercise notes, not medical advice.

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News-Medical · 17 Sept 2026 · Supplements / medicine

Twelve mouse “aging rate indicators” are proposed to speed tests of longevity drugs

Commentary (review of mouse evidence). Steven Austad, Richard Miller, Matt Kaeberlein and colleagues argue in Frontiers in Science (doi 10.3389/fsci.2026.1821393) that 12 candidate aging rate indicators — single measurements that mark a slow-aging state — could shorten mouse drug screens versus 3–4 year lifespan studies. They draw on the NIA Interventions Testing Program, which has found 14 agents or combinations that extend mouse life, eight by ≥12%, some even when started in late adulthood. Candidates are not validated in humans and are not a clinic test. Educational aging-biology notes, not an anti-aging drug protocol.

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News-Medical · 17 Sept 2026 · Supplements / medicine

Time-restricted eating was safe and shifted HD markers in a 12-week pilot of 20 people

Study (uncontrolled 12-week pilot). Russell Wells, Amie Hiller and Oregon Health & Science University colleagues report in Nature Metabolism (doi 10.1038/s42255-026-01612-x) on 20 adults with early-stage Huntington’s disease who ate in a self-chosen 6–8 hour window. They kept weight and lean mass, followed the window more than five days a week, improved 0.5 points on the composite Unified Huntington’s Disease Rating Scale (which typically falls ~1 point per year in early disease), and saw a 13% drop in blood neurofilament light plus better mitochondrial activity in blood cells. No comparison arm; HD is not Alzheimer’s. Educational nutrition notes, not a disease treatment or a fasting prescription.

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