They are the basic substance in all body cells and are essential for maintenance and repair of body tissues. Meat, fish, poultry, eggs, milk, cereals, grains, peas and beans provide protein. Carbohydrates are fuel for your body. Fats are carriers for fat-soluble vitamins. Body fat serves to store energy and to cushion body organs.
Vitamins are organic substances essential in small amounts for good health.
They play unique roles in chemical reactions in your body. Minerals, like vitamins, are needed in small amounts. Your body uses minerals to maintain bones and teeth, and to help various chemical reactions in your body. Water is an essential part of every body cell. You need eight 8-ounce glasses of water every day to regulate your body temperature, for proper kidney function and for every reaction that takes place in your body.