Stevia is a natural sweetener which provides almost double the amount of sweetness when compared to regular sugar. It has zero calories and no carb making suitable for weight loss. However, it gives a bitter aftertaste and might make some hot beverages taste bad. No doubt it is good for diabetics and weight loss, but it would be best to refer to its acceptable daily intake (ADI) by prescribed bodies. 3mg of stevia leaves per kilogram of body weight is normally recommended.