The fasting is not so much about weight loss as getting rid of the right sort of fat - i.e. core fat. It also has good effect on IGF (insulin-like growth factor) levels and other bits of biochemistry associated with cell death/wonky metabolism/disease. It's long been thought that low calorie diets can promote longevity and prevent disease - particularly cancer. It's not faddy because it's supposed to be a permanent change.
The fasting is not so much about weight loss as getting rid of the right sort of fat - i.e. core fat. It also has good effect on IGF (insulin-like growth factor) levels and other bits of biochemistry associated with cell death/wonky metabolism/disease. It's long been thought that low calorie diets can promote longevity and prevent disease - particularly cancer. It's not faddy because it's supposed to be a permanent change.