As a rule, younger people need less vitamin D than older people, regardless of sex. This article explains average vitamin D ...

Vitamin D dosage recommendations can vary depending ... Rates of vitamin D deficiency are higher for women, non-Hispanic Black people, and individuals ages 20–29. There are several other groups ...

The best way to achieve this is by taking all the right vitamins ... The recommended daily dosage of iron is 11 mg for men and 8 mg for women. Taking too much could result in loss of appetite ...