Nutrition, which depends on food, is also of utmost importance in the cure of disease. The primary cause of disease is a weakened organism or lowered resistance in the body, arising from the adoption of a faulty nutritional pattern. There is an elaborate healing mechanism within the body but it can perform its function only if it is abundantly supplied with all the essential nutritional factors. Human cell need at least 45 chemical components and elements. Each of these 45 substances, called essential nutrients, must be present in an adequate diet. The nutrients include Oxygen and Water. The other 43 essential nutrients are classified into five groups: Carbohydrates, fats, proteins, minerals, and vitamins. All 45 of these nutrients are vitally important and they work together. Therefore, the absence of any may result in disease, eventually death.