Popular brain supplement linked to shorter lifespan in men

A recent study has found a potential link between higher blood levels of the amino acid tyrosine and a shorter lifespan in men. Conducted by researchers from the University of Hong Kong and the University of Georgia, the study analyzed data from more than 270,000 participants in the UK Biobank. The findings suggest that elevated tyrosine levels could reduce male life expectancy by nearly a year, while no significant impact was noted for women.

Tyrosine, which is naturally found in protein-rich foods and is commonly marketed as a supplement for enhancing focus and mental performance, plays a role in the production of neurotransmitters such as dopamine. Despite its importance in various biological processes, the long-term implications of tyrosine levels on aging remain unclear.

The researchers utilized both observational data and genetic analysis to explore the relationship between tyrosine and lifespan. Their findings raise questions about the role of dietary supplements and protein intake in longevity, particularly in men. However, further research is necessary to fully understand these dynamics and their implications for health recommendations.

The study was published in the journal Aging-US under the title "The role of phenylalanine and tyrosine in longevity: a cohort and Mendelian randomization study."