“Both of these diets would be lacking nutrients, but the vegetarian diet would at least have a few more nutrients,” Frechman says reluctantly, after we forced her to choose a lesser of two evils. But she’s quick to add: “I don’t see any pluses for either of these diets.” Your body needs a balance of protein, carbohydrates and fats. “Any diet with less calories than normal will cause weight loss,” Frechman begins. “That’s the only positive thing with either of these, but really, they’re unhealthy, short-term fixes.”