The Atkins Diet, trains your body to burn its own fat as your primary energy source, enabling you to lose weight and then maintain that weight loss. Your body handles carbohydrates and fats very differently. When you use carbohydrates as your primary fuel, and you consume more carbs than the body needs for energy, it can encourage the storage of fat on your body. But when your carbohydrate consumption is controlled, you convert your body to its back-up fuel system, which is fat burning, and you burn your stored body fat for energy. A low-carb diet also reduces the need for excessive amounts the hormone insulin. Insulin is a hormone that responds to carb intake and plays a major role in weight loss and weight maintenance.