Fat-soluble vitamins. These, which include vitamins A, D, E, and K, are stored in the body’s fatty tissue. They’re absorbed more easily in the presence of dietary fat.
Water-soluble vitamins. The body must use these nine vitamins right away since any leftover water-soluble vitamins will get flushed out through the urine. Vitamin B12 is the only one in this group that can be stored in the liver for years.