Essential fatty acids are lacking in most low calorie diets. Essential means that they must be ingested. Your body cannot synthesize them on it’s own. Not only are EFAs essential for hair, skin, and nail growth, but they also push out cellulite pockets, speed up the metabolism, control blood pressure, push out bad fat, and help reduce coronary disease. Slim EFAs are designed specifically for weight loss and are superior to any over the counter fish oil.