Organic compounds that are either water or fat-soluble, are essential for normal health, growth, and the proper functioning of cells. – The fat-soluble vitamins are A, D, E, and K, and can be stored in the body in fat cells. – Vitamin C and the chain of B vitamins are water soluble and cannot be stored in sufficient quantity, and must be consumed daily. – A diet that includes plenty of vegetables, grains, and fruits, with smaller amounts of dairy and meat products, ensures sufficient dietary vitamins.