In many foods , the natural combination of vitamins with other nutrients makes those vitamins more usable by the body than are vitamins added in vitamin supplements.
People who regularly eat cereals fortified with vitamin supplements sometimes neglect to eat the foods in which the vitamins occur naturally.
Foods often mist be fortified with vitamin supplements because naturally occurring vitamins are removed during processing .
Unprocessed cereals are naturally high in several of the vitamins that are usuallly added to fortified breakfast cereals.
Cereals containing vitamin supplements are no harder to digest than similar cereals without added vitamins.