2. Favoring Certain Foods
One telltale sign of a fad diet is when it places onus on certain foods or food groups. For instance, a diet that preaches that you can only lose weight on a high protein, no-fat, or no-carbohydrate diet isn’t realistic. In reality, the body requires a well balanced mix of protein, healthy fat, complex carbohydrates, vegetables, and natural sugars and carbohydrates from fruits to fuel the body with the essential nutrients it needs to life an active, healthy life.