Intermittent fasting and metabolic health: mechanistic review

This was a review of existing research, not a new experiment with a specific group of participants. The researchers examined how intermittent fasting, eating only during certain times, might affect metabolism, the body’s process of using and storing energy. They discussed findings from human studies and laboratory research on blood sugar, insulin sensitivity, fat use, and body clocks. The review also considered cell processes such as autophagy, the body's way of breaking down and recycling damaged parts.

What this means for you: This review can help explain why intermittent fasting might affect health, but it does not prove that fasting will improve your health or extend your life. You can treat it as background information, not a reason to buy a fasting program or supplement.