For Insta Keto a different audience. How can you Insta Keto identify a fad diet? In many cases, it's very simple to spot these diets; they will often limit dieters to just one or a few kinds of food or restrict specific foods or food groups entirely. For example, the cabbage soup diet, which involves eating only bananas one day, milk the next. The watermelon diet, the grapefruit diets and other extremely restrictive diets are all fad diets which not only are not effective at leptitox producing long term weight loss but can be damaging to your health ...