Popular Supplement Ingredient Linked to Shorter Lifespans in Men

  • تاريخ النشر: منذ يوم زمن القراءة: دقيقة قراءة

Research in UK Biobank found an association in men, but did not directly test tyrosine supplements.

The Ingredient Is Tyrosine

It Is Also Found Naturally in Food

More Than 272,000 People Were Studied

Higher Levels Were Associated With Male Mortality

Genetic Analysis Suggested Nearly One Year

Women Did Not Show the Same Clear Pattern

Phenylalanine Was Not the Final Explanation

The Biological Mechanism Remains Uncertain

The Study Did Not Test Supplements Directly

The Findings Do Not Justify Cutting Protein

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Tyrosine, an amino acid sold in supplements marketed for focus, alertness and mood support, has been associated with shorter lifespans in men. Researchers reached the finding after analysing health and genetic information from more than 270,000 UK Biobank participants.

The study does not prove that taking an L-tyrosine supplement causes early death. It measured circulating tyrosine and genetically predicted lifelong exposure, not supplement brands, dosages or long-term use by consumers.

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