General · 6 November 2025
Fasting for 36 Hours Triggers Peak Autophagy - The Body's Cellular Cleanup System That Protects Organs
Cells initiate autophagy—a recycling process—when nutrients are scarce, with animal studies indicating this begins after 24 hours without food and may reach maximum activity between 36 and 72 hours of fasting. The liver, brain, and immune system are notably impacted. Researchers are investigating links to conditions such as diabetes, heart disease, and neurological disorders, but robust clinical evidence supporting fasting’s cellular benefits remains limited.
Reported by Cleveland Clinic · How we write briefs