A Popular “Brain Supplement” Ingredient Was Just Linked to Shorter Lifespan in Men
Tyrosine is a familiar name on nootropic and “brain fog” supplement labels, marketed for focus, stress resilience, and mental performance. A large new UK Biobank analysis found something considerably less flattering: higher circulating tyrosine levels are associated with a measurably shorter lifespan — specifically in men. What the Study Actually Did Published in the journal […]