Fasting

Bryan Johnson Recommendation

• 10% calorie restriction
• 6-hour eating window
• 18-hour daily fast

Body

0-3 hours

• using energy from food
• elevated insulin

3-8 hours

• fat oxidation increases
• liver converts gluecose to glycerin
• insulin falls

8-16 hours

• some fasting related cell signaling increases?

16-18+ hours

• ketone production increases?
• Fasting-related pathways such as AMPK and autophagy-related signaling may increase?