Yoshinori Ohsumi was awarded the 2016 Nobel Prize in Physiology or Medicine for discovering the mechanisms of autophagy. Autophagy is the process by which cells sequester damaged organelles, misfolded proteins, and other cellular debris into specialised vesicles called autophagosomes, which then fuse with lysosomes for enzymatic degradation and component recycling. Without functional autophagy, damaged mitochondria accumulate, misfolded protein aggregates build up (a hallmark of neurodegeneration), and the inflammatory signal released by cellular debris chronically activates the immune system.
How to Stimulate Autophagy
- Fasting — autophagy increases markedly after 14–16 hours of fasting as insulin falls and AMPK activates
- Exercise — particularly high-intensity exercise, which creates temporary nutrient stress in muscle cells
- Caloric restriction — the most robust longevity intervention in model organisms acts primarily through autophagy pathways
- Spermidine — found in fermented foods, aged cheese, mushrooms, and legumes; has direct autophagy-inducing evidence
- Coffee — cafestol and chlorogenic acid in coffee have autophagy-stimulating properties
autophagycellular healthlongevityintermittent fastingageinginflammation