A study of over 270,000 UK Biobank participants found that higher blood levels of the amino acid tyrosine were associated with shorter life expectancy in men, potentially reducing lifespan by nearly one year, with no significant effect observed in women. Tyrosine, naturally present in protein-rich foods and sold as a focus-boosting supplement, may influence aging through mechanisms involving insulin resistance and sex-specific hormone signaling, though researchers called for further investigation into whether dietary modifications could safely lower tyrosine levels.
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A study of over 270,000 UK Biobank participants found that higher blood levels of the amino acid tyrosine were associated with shorter life expectancy in men, potentially reducing lifespan by nearly one year, with no significant effect observed in women. Tyrosine, naturally present in protein-rich foods and sold as a focus-boosting supplement, may influence aging through mechanisms involving insulin resistance and sex-specific hormone signaling, though researchers called for further investigation into whether dietary modifications could safely lower tyrosine levels.