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ScienceDaily · 6 Sept 2026

Popular brain supplement linked to shorter lifespan in men

Study (observational plus Mendelian randomization). Zhao, Sun, Zhang and Ye (Hong Kong and Georgia) analyzed more than 270,000 UK Biobank participants in Aging-US. Higher blood tyrosine tracked with shorter predicted male lifespan—about a year in genetic estimates—while women showed no significant effect. Phenylalanine dropped out after adjusting for tyrosine. The authors did not test tyrosine pills; this is not proof that a focus supplement shortens life. Protein restriction to lower tyrosine is unproven as a longevity tactic and can work against muscle in older adults. Discuss supplements with a clinician.

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ScienceDaily · 6 Sept 2026

This lifestyle program improved cognition 55% more than basic health advice

Study (randomized trial). LatAm-FINGERS, presented at AAIC 2026 and published in The Lancet, followed 1,065 older adults at 12 sites in 11 Latin American countries for two years. A structured program (coached exercise including salsa and tango, a locally adapted MIND diet, cognitive training, vascular-risk checks, and 38 group meetings) produced a 55% greater gain on a global cognition composite than a lighter education arm. Memory, executive function, and processing speed also improved more with coaching. This is risk-reduction research, not a dementia cure and not a supplement protocol.

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ScienceDaily · 6 Sept 2026

Scientists discover a hidden problem with this popular sugar substitute

Study (zebrafish; ScienceDaily coverage 6 Sept 2026 of a Science Signaling paper). Washington University in St. Louis researchers report that sorbitol—used in sugar-free gum and candy, and made in the gut from glucose after meals—can reach the liver and convert toward a fructose derivative. Gut Aeromonas strains can chew some of it up; high loads can overwhelm that filter. This is animal and mechanistic work, not a human trial proving liver disease from gum. It is a caution that “sugar-free” is not metabolically free. Food choices belong with a clinician if you have diabetes or fatty-liver disease.

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