For a healthy person weight loss is simple: burn more calories than you consume. Your healthiest weight is determined by height to weight ratio or Body Mass Index (BMI) and the amount of fat in your body. Unfortunately, over 60% of the North American population are considered to be overweight according to the BMI index because of the unhealthy diet with foods high in saturated fat and trans fat, causing many diseases and becoming a heavy burden to our natiohealtheath care system.