How safe is the four hour body "slow carb" diet promoted by tim ferriss? this seems to be talked about everywhere; it promises no counting calories, and you get a pigout "cheat day" every week. but the rest of the time = no fruit & no starch (beans and v

Not sure : Any diet will work the problem is maintaining the weight loss. That is where the problems comes for most people.

Another fad: Dieting is difficult but also simple. The only way to lose weight is to take in fewer calories than one uses up. That's it. All diets must make use of this principle all the rest is marketing hype. The main issue with many of these diets in long term adherence. In fact for sustained weight loss one often needs to eat differently for life. Popularized diets tend to fail in this regard.