Whether a multivitamin is necessary depends on the type of vitamin, whether it is for a specific group of people, and whether there is a vitamin deficiency.
1. Types of vitamins: Generally speaking, vitamin D is one of the vitamins that is scarce in common foods, so it is recommended to routinely take vitamin D supplements for children from half a month after birth to two years old, and can be taken for the rest of their lives.
2. Special people: Vitamin K2 as a calcium-directed transport carriers, menopausal women and the elderly can prevent osteoporosis; preparation for pregnancy and pregnant women need to take folic acid to prevent fetal malformations and so on.
3. Vitamin deficiencies: If a multivitamin deficiency is clinically diagnosed, a multivitamin is also needed.
Whether multivitamins are necessary or not, there are other factors to decide, it is recommended to consult a doctor, it is not recommended to take unauthorized vitamin supplements.