Comment by michaelbrave

I don't think it's the fiber.

I did a similar unscientific experiment in the past where I did a juice fast for two weeks and had bloodwork done before and after (similar bodytype, unhealthy, overweight, high blood sugars, high cholesterol etc). Basically the doctor was shocked how all my numbers became the same as someone really healthy during the fast. So I think the lack of junk and calorie restriction is doing more than the fiber.