Celebrities are always touting the latest nutritional fads like "clean eating", veganism, etc. Now it's the Fasting Plan. Of course, these people know nothing. In fact, little is known about human nutritional needs but we do know some simple things to prevent starvation. For example, your nutrition requires fats.
There seem to be all sorts of variants of the Fasting Fad, but there may be something useful in it. For example, no adult without an all-day manual labor job (or a heavy lifter or a distance runner) needs three meals/day unless they are underweight. Three meals/day was designed for farmers, just like summer school vacation.
Furthermore, most hunger is what we have described as "false hunger" (meaning it represents no need for significant nutrition) for anybody even 5-10 lbs overweight. Our fat cells are a massive storage battery waiting to be used.
So what about fasting, whether it means just skipping one of the conventional meals or even taking a day or two off from food every week? Not as a weight-loss plan, but just as a plan. Many find it increases their energy.
When you think about it, during almost all of the 300-500,000 years (except the past few thousand agricultural years) of human life and evolution, food scarcity was the norm. Humans are designed for food scarcity rather than for today's abundance. That's why eating is fun rather than necessary.
This is interesting: MIT study: 24-hour fasting regenerates stem cells, doubles metabolism. This gives credence to the 5–2 diet, which has recently gained in popularity thanks to a large celebrity following.
