3 warning signs that the diet you want to try is too good to be true

From the cranberry juice ("lose 25 pounds in days!") craze to the lemon "detox cleanse," dozens of weight-loss schemes have boomed and, eventually, busted.

Other diets have stuck around, from the gluten-free plan to the more recent alkaline diet.

Instead of making yourself a guinea pig for every new eating fad, wouldn't it be nice if there were a way to tell which diets were phony before trying them out?

Registered dietitian and nutritionist Andy Bellatti recently gave us three pointers to spot a faulty fad diet in minutes: