Multivitamins are designed to fill in the insufficiencies of vitamins, minerals, and other nutrients in the daily diet. However, the need for specific nutrients varies according to age, sex, and other people with special needs. There are multivitamins for women, men, children, infants, older adults, and people afflicted with vitamin and mineral deficiencies. Today, as diets are becoming unhealthy due to food preservatives and other substances in the food with little nutritional value, people in all age groups are turning to multivitamin supplements. The complete multivitamins are those that include all the necessary dietary nutrients, but the best multivitamin is the one that suits your needs.