What are simple carbs?

15 Mar 2013 Carbohydrates are one of the macronutrients (alongside fats and proteins) whose main function is to provide the body with energy. Carbohydrates are somewhat unpopular due to the misconception that they cause weight gain. This popular misconception leads some to completely eliminate carbohydrates from their diets. Carbohydrates do not cause weight gain and eliminating them from your diet causes you to miss out on some important health benefits. While eliminating all carbohydrates is a bad idea, differentiating the good from the bad improves overall health.