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Higher tyrosine levels linked to shorter lifespan in men, study suggests

ScienceDaily reports that elevated levels of the amino acid tyrosine were associated with reduced male longevity.

Updated Sep 6, 2026 · 22:46 UTC1 reports

The short version

  • A study examining more than 270,000 individuals linked elevated blood levels of tyrosine to a shorter lifespan in men.[ScienceDaily]
  • Researchers estimated that higher levels could potentially decrease male life expectancy by nearly a year, whereas no significant impact was identified in women.[ScienceDaily]
  • The study did not directly evaluate dietary supplements, and authors noted the findings do not prove that taking tyrosine supplements shortens lifespan.[ScienceDaily]

Key facts

  • A study of more than 270,000 participants found that higher circulating levels of tyrosine correlate with shorter male life expectancy.[ScienceDaily]
  • The potential lifespan reduction for men with elevated tyrosine levels is estimated at nearly a year.[ScienceDaily]
  • No significant link between tyrosine levels and lifespan was detected among women.[ScienceDaily]

What remains uncertain

  • The research did not directly test tyrosine supplements, leaving it unknown whether supplement consumption affects lifespan.[ScienceDaily]

Sources

Outlet counts describe coverage, not independent confirmation. Reports may share a wire service or original source.