In humans there are 13 vitamins:

Vitamins and minerals are micronutrients required by the body to carry out a range of normal functions.

Vitamins and minerals are micronutrients, substances your body needs in small amounts to work properly.

Learn what vitamins are, their functions, sources, deficiencies, and why theyre essential for health in this complete.

Vitamins for children, multivitamins, herbals, and supplements are available online and at your local walgreens store.

Find out from webmd's slideshow which vitamins and minerals your body needs, what they do, and what foods you.

Our experts weigh in on signs of compromised immunity, and how to give it a fighting chance all year.

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