Fasting has been a practice throughout human evolution. Ancient hunter-gatherers didn’t have supermarkets, refrigerators or food available year-round. Sometimes they couldn’t find anything to eat. As a result, humans evolved to be able to function without food for extended periods of time. In fact, fasting from time to time is more natural than always eating 3–4 (or more) meals per day.
Fasting is also often done for religious or spiritual reasons, including in Islam, Christianity, Judaism and Buddhism.
(IF) is an eating pattern that cycles between periods of fasting and eating. When fasted, our cells initiate cellular repair processes. This includes autophagy, where cells digest and remove old and dysfunctional proteins.
1. There are changes in the function of genes related to longevity and protection against disease. 2. The levels of growth hormone skyrocket, can increasing as much as 5-fold. This has benefits for fat loss and muscle gain, as well as joint health etc.