Myths vs facts: Zink and Langlebigkeit

Zinc is an essential trace element involved in numerous enzymatic functions, immune defense, and cell division. Some studies suggest a link between zinc status and longevity, particularly through regulation of inflammation and oxidative stress. However, the evidence is mixed: while zinc deficiency clearly impairs health and may shorten lifespan, there is no robust evidence that zinc supplementation beyond the recommended daily intake extends lifespan in healthy individuals. In fact, excessive zinc intake can be toxic and interfere with copper absorption. Many claims about zinc as an 'anti-aging miracle' are based on animal or mechanistic data, not on randomized controlled trials in humans. Available human studies show moderate effects on biomarkers like telomere length or inflammatory markers, but no consistent extension of maximum lifespan. For healthy individuals with adequate zinc status, additional supplementation is not recommended. A blood test can rule out deficiency. Overall, the statement 'zinc prolongs life' is a myth if understood as a universal recommendation; the reality is more nuanced: zinc is important, but not an elixir of life.