Scientists tracked 829 people for 20 years and discovered that one “embarrassingly named” nutrient, Spermidine, reduced death rates by nearly 40%. This polyamine doesn’t just slow aging, it literally stabilises your DNA and activates cellular repair pathways that tell your cells when to grow, heal, and clean house. You can get therapeutic levels from shitake mushrooms, wheat germ, or fermented foods like kimchi, basically turning your dinner plate into an anti-aging protocol.