There is only one way to lose weight. Eat less and expend more energy. However , dieticians and nutritionists around the world have formulated their own quirky diets for less disciplined beings who cant stop themselves reaching for that second helping and who also hate to exercise.

Here are the five of the most popular diets being followed by people all over the world.

DR ATKIN’S PLAN: The important element of this plan is to reduce sugar and refined carbohydrates. This leads to decreased hunger and improves metabolic changes.

THE GENERAL MOTORS DIET: This is what called a ‘mono’ diet for seven days during which non cereals can be eaten. This program is designed for a target weight loss 2 kg to 4 kg per week. The effectiveness of this seven-day plan is that the food eaten burns more calories than they give to the body and not eating cereals also contributes to weight loss.

D’ADAMO’S DIET: This plan relies on blood type as a key to our genetic history, which tells us what food to eat .Peter D’Adamo says that blood type determines the way our body absorbs nutrients and dictates the diet and exercise plan accordingly. Blood group O’s, for instance shouldn’t eat mustard greens, cauliflower and cabbage because they inhibit the thyroid function by binding iodine.

HARVEY DIAMOND’S FIT FOR LIFE: Diamond says that people should not mix high protein and complex carbohydrates. They are not digested quickly and get stored by body as fat which in turn leads to weight gain.