Vitamin C is a water soluble vitamin, which can be made by many animals, excepts humans. Thus it must be consumed in the diet. The most important function of vitamin C is for collagen (a protein) synthesis. This protein is needed for bone maintenance and to help wounds heal. Vitamin C may also serve as an antioxidant, which may aid in preventing certain types of cancer. Diets deficient in this vitamin may lead to a disease known as Scurvy. Symptoms include bone pain, diarrhea, and small hemorrhages around the hair follicles of the skin.

recommendation: 60 mg for adults.
foods in: citrus fruits (oranges, grapefruit), green peppers, broccoli, cauliflower, potatoes, and lettuce.

Ascorbic Acid. A white crystalline vitamin, C6 H8 O6, found in citrus trees, tomatoes, potatoes, and green leafy vegetables, and used to prevent scurvy.