During different seasons of our lives, we need vitamins and supplements for various reasons. When we’re young, we just need the basic vitamins. During pregnancy, prenatalvitamins.org is a site where expectant mothers might visit. When we get a little older, there are vitamin and mineral deficiencies that people have due to various causes, and supplementing a healthy diet with vitamins and minerals can have a therapeutic effect. It is always good to check with one’s doctor first before taking vitamins and supplements.