Is Zink useful for longevity?

Zinc is an essential trace element involved in immune function, DNA repair, and antioxidant defense (e.g., as a cofactor for superoxide dismutase). These mechanisms are theoretically relevant to healthy aging. However, there are no robust human trials demonstrating a direct longevity benefit from zinc supplementation in healthy individuals. Evidence is mostly mechanistic and observational. Moreover, long-term high-dose zinc (>40 mg/day) can cause copper deficiency and neurological issues. For longevity, a balanced diet and healthy lifestyle outweigh single nutrients. A blood test to assess zinc status is advisable before supplementing, as excess can be harmful. Conclusion: avoid deficiency, but evidence for anti-aging effects in well-nourished individuals is weak.