Don't listen to people who OVERLY protest a diet using hyperbolic words like "Dangerous" while they're plugging a website. Instead, check out my Youtube channel
for some truth http://www.youtube.com/user/Gary1111001
(vegan 20 years, 80-10-10 for 5 years, thin big-eater 45 years)
If the body's metabolism adjusted completely, people wouldn't be fat.
Here I explain why diets like 5:2 and I.F. make you fat. http://www.youtube.com/watch?v=L2ckxQt2gwQ
Do you realize now that if
the 10 pounds you gained on 811 was fat, it was just a response to your previous under-eating, etc
PS - 80-10-10 is better if you learn the facts and myths. For all others... zip it.