Calcium is essential for the growth and development of bones and teeth. It also helps in muscle contraction, nerve transmission, and blood clotting.

Vitamin D is necessary for the absorption of calcium. It also helps in the regulation of calcium and phosphate levels in the blood.

Iron is important for the production of red blood cells. It also helps in the transportation of oxygen throughout the body.

Vitamin C is essential for the prevention of scurvy. It also helps in the absorption of iron and the formation of collagen.

Vitamin B12 is necessary for the synthesis of DNA and RNA. It also helps in the formation of red blood cells and the maintenance of the nervous system.

Protein is important for the growth and development of muscles. It also helps in the repair of tissues and the production of hormones and enzymes.

Carbohydrates are the primary source of energy for the body. They are broken down into glucose, which is used by cells for energy.

Fats are essential for the absorption of fat-soluble vitamins, such as vitamins A, D, E, and K. They also help in the storage of energy and the insulation of the body.

Vitamin A is necessary for the prevention of night blindness. It also helps in the maintenance of healthy skin and vision.

Potassium is important for the regulation of blood pressure and heart function. It also helps in the maintenance of fluid balance and muscle contraction.

Iron is necessary for the formation of hemoglobin, which is the protein in red blood cells that carries oxygen throughout the body.

Calcium is important for the maintenance of healthy bones and teeth. It also helps in muscle contraction, nerve transmission, and blood clotting.

Glucose is necessary for the production of energy in cells. It is broken down into pyruvate, which is then converted into acetyl-CoA and enters the citric acid cycle.

Protein is important for the maintenance of healthy skin and hair. It also helps in the repair of tissues and the production of hormones and enzymes.

Iron is necessary for the prevention of anemia. It also helps in the transportation of oxygen throughout the body.