Fad Diets

A fad diet is one that makes unrealistic promises. Most fad diets are very low in carbohydrates and in calories, causing fluid loss from the body, which indicates a loss of weight on the scale. One gram of carbohydrate binds 4 grams of water. So if you lose 400grams of carbohydrates, you lose 1600 grams of water and you will weigh 2 kg less on the weighing scale. But once the body gets rehydrated with water, the weight will come right back.