You know that fistful of pills you take each morning? Those vitamins are essential ingredients to life. You know they're good for you, but do you know why? Take our quiz on vitamins to see if you know what those pills you pop actually do for you.
Vitamin is a combination of the words vital amine. The word vitamin was first coined by Polish chemist Kasimir Funk in 1912.
Vitamins are specialized molecules that serve as catalysts in chemical reactions in our bodies. For example, vitamin C fosters the chemcial conversion of hydroxylproline from proline. Hydroxylproline is an essential ingredient in the production of collagen -- the foundation of our teeth, skin and hair.
Surprisingly, strawberries contain almost twice as much vitamin C as orange juice and a little more than kiwifruit
Folic acid not only helps prevent cervical cancer and reduce osteoporosis, it's also essential in fetal growth and even acts as a mild anti-depressant.
Vitamin K, found most abundantly in leafy green vegetables, helps in blood clotting and promotes bone strength.
Vitamin D is essential in preventing rickets.
Vitamin C produces collagen, which makes up connective tissue, teeth, bones and cartilage.
Riboflavin (B2), thiamine (B1), and niacin (B3) are all B vitamins.
Vitamin D is the only vitamin we don't consume from eating or drinking -- we get it from sunlight.
While most vitamins must be replenished on a regular basis, vitamin A can be stored in the liver for up to a year.