They might be, but not always. If you put a good quality gasoline in your car – it would consume less of it. If you eat the best nutritious and healthiest food, your body will process and utilize it efficiently. But many weight loss diets are intended to be exactly opposite – eat more and utilize less. Most of the weight loss diets are intended to be temporary, many of them are unbalanced, and some are extremely unbalanced. Everyone with any chronic medical problems or taking any prescription medications would be advised to discuss any potential diets with their physician first. The primary care physician might not know every single detail about every diet, but he is still the best available option for most people to at least eyeball the considered nutritional approach… If you just eat healthy, most of the time it would not result in the weight loss… And yes, it is possible to have a healthy diet designed to promote the weight loss…