We already know a lot of useless diets what's more some of them are unhealthy. The Atkins diet based on that fact that if you eat less carbohydrate you loose weight which is true to be honest, but if you have enough courage for start a diet the best option is to stop eat too much food.

The next diets are based on fasting.

Ketones are the result of the body burning fat for energy or fuel. For a person with diabetes, ketones are often the result of prolonged high blood sugar and insulin deficiency. Without the right amount of insulin, glucose starts to build up in the blood stream and doesn't enter the cells.