Popular Supplement Ingredient Linked to Shorter Lifespan in Men

A new study links genetically higher tyrosine levels to a slightly shorter lifespan in men.

Researchers analyzed health and genetic data from more than 270,000 UK Biobank participants.

Men with higher inherited tyrosine levels appeared to live about one year less on average.

The association was not clear in women, raising questions about tyrosine’s long-term safety in supplements.