Autophagy: Cellular Recycling
Your body's self-cleaning system
Autophagy (Greek for 'self-eating') is the process where cells recycle damaged components. It's activated by fasting and is one of the most powerful anti-aging mechanisms known.
What autophagy cleans up
Tap each target to see what autophagy removes.
Tap each tile to reveal the detail.
When does autophagy activate?
Autophagy ramps up significantly after 14-16 hours of fasting. It peaks around 24-48 hours. Exercise, coffee (black), and certain compounds like spermidine also enhance it.
Estimate the timeline
How many hours of fasting before autophagy significantly increases?
Other autophagy triggers (not just fasting)
Fasting is the headline trigger but not the only one. Vigorous exercise activates autophagy in muscle and brain tissue within 30-60 minutes. Caloric restriction (long-term) keeps it elevated. Specific compounds — spermidine (in aged cheese, mushrooms, wheat germ), urolithin A (pomegranate metabolite via gut bacteria), and resveratrol — boost it modestly. The strongest signal is still 16-24h of fasting; the others are useful adjuncts.
Key Takeaway
Autophagy is your body's spring cleaning system. Fasting for 16+ hours activates it powerfully. This is why time-restricted eating is a cornerstone of longevity.