Vitamin C
Humans unlike most animals cannot manufacture their own Vitamin C, so it must be replenished daily. The need for Vitamin C is increased during periods of stress, illness, rapid growth, pregnancy, strenuous physical activity, following surgery or other trauma, and in those who smoke tobacco or consume alcohol.
The primary function of Vitamin C is in the manufacture of collagen. Collagen is a protein and part of connective tissue, cartilage and tendons that hold the body together, making Vitamin C useful for repairing wounds, preventing bruising and keeping gums healthy. In addition to its role in collagen metabolism, Vitamin C is also critical to immune function, the manufacture of certain nerve transmitting substances and hormones, and the absorption and use of other nutritional factors.
Vitamin C affects immune function by enhancing white blood cell activity and increasing interferon levels and antibody responses. During times of chemical, emotional, physical or psychological stress, the urinary system excretes Vitamin C in significant amounts, thereby increasing the body's need for this vitamin. Vitamin C is the first line antioxidant protection, making it one of our most important antioxidant nutrients.