The merits of fasting have been known for thousands of years by religious folk both West and East. Indeed, the feast/feast way of doing things was the main way of subsistence in the ancient past, and no doubt this is where humanity will return. But until that happy time, here is some info on the modern view of this, time restricted eating:
“Research overwhelmingly supports the notion that ditching the “three square meals a day” approach in favor of time-restricted eating (also referred to as intermittent fasting) can do wonders for your health, as your body simply cannot function optimally when there’s a continuous supply of calories coming in. The cycling of feasting (feeding) and famine (fasting) mimics the eating habits of our ancestors and restores your body to a more natural state that allows a whole host of biochemical benefits to occur. It’s a powerful approach that not only facilitates weight loss, but also helps reduce your risk of chronic diseases like Type 2 diabetes, heart disease, cancer and Alzheimer’s. While there are many variations, time-restricted eating typically involves not eating for at least 14 consecutive hours a day. However, not eating for 16 to 20 hours is likely closer to a metabolic ideal. This means you eat all of your meals for the day within a four- to eight-hour window. Among the many benefits of time-restricted eating is the upregulation of autophagy and mitophagy — natural cleansing processes necessary for optimal cellular renewal and function. In a January 2020 review paper,1 researchers explain how caloric restriction helps combat Alzheimer’s specifically, through these autophagy pathways.