What vitamins should I take to slow aging?

To make your RealAge (physiologic age) younger, don't take needless vitamins and supplements. Take a multivitamin that contains all the vitamins and minerals you need (especially C, D, E, folate, calcium and magnesium) but no iron, in the correct daily amount. Unless you are a woman in pregnancy bearing age, do not take vitamin A as an individual (one-ingredient) supplement, and make sure your multivitamin contains less than 2,500 IU of vitamin A. Do not take iron as a supplement except under the supervision of a doctor.