Vitamin A is produce yb beta-caroteine, which is found in foods such as carrots, pumpkin, and sweet potatoes. Vitamin D is produced when ultraviolet light from the sun hits the skin. Vitamin K is produced by intestinal bacteria. Antioxidants are thought to play a key role in preventing chronic diseases. One of the minerals biggest function is to maintain water.
Minerals are also essential components of respiratory pigments, enzymes, and enzyme systems.
They regulate muscular and nervous tissue excitability, are essential for blood clotting, and normal heart rhythm. Water is contained in almost all foods, primarily in liquid foods, fruits and vegetables.