Intermittent fasting is an umbrella term for diets that promote cycles of fasting followed by period of eating regularly. The most popular and well known is likely the 5:2 diet.
Now the great benefit to this is it does not tell you what you can and cannot eat. There are no restrictions on the type of food, and there is some research that fasting and the 5:2 diet works for weight loss.
But again we come back to the same issue – sustainability. The 5:2 recommends people consume 400-500 calories (for women) or 500-600 calories (for men) on two days of the week and eat normally on other days. This will aid weight loss. 400-500 calories is not a lot of food! And while you can pick the days it may not always fit around your busy social life.
While it promotes normal eating, many studies which proved weight loss recommended only 1200-1500 calories on the regular days, which in itself is also a weight loss diet – a possibly unfortunately end result of a slowed metabolism.
The other concern with this eating plan is people feel they have a license to eat of the regular days. Unfortunately chips and burgers every other day is still not healthy and you do need to meet your fruit and vegetables requirement to maintain health.
With the fewest food restrictions, when compared to the Keto, Atkins, and Paelo diets, it is one of the best of a not so good bunch, but still you need to think about how sustainable it is and how long could you really last eating only 500 calories two days a week.
I tell you, I wouldn’t last long.