A vitamin is a small molecule that your body needs to carry out a specific reaction. Your body has no way to create vitamin molecules itself, so it is DOWN TO YOU AND THE FOODS YOU EAT.
The human body needs 13 different vitamins:
Vitamin A: fat soluble - Retinol; comes from beta-carotene in plants (when you eat beta-carotene, an enzyme in the stomach turns it into Vitamin A.)
Vitamin B: - water soluble.
B1: Thiamine
B2: Riboflavin
B3: Niacin
B6: Pyridoxine
B12: Cyanocobalamin
Folic Acid
Vitamin C - water soluble - Ascorbic acid
Vitamin D - fat soluble - Calciferol
Vitamin E - fat soluble - Tocopherol
Vitamin K - fat soluble - Menaquinone
Pantothenic acid - water soluble
Biotin - water soluble
Inside the body, vitamins are used in many unique ways. For example, one of Vitamin A's main roles is in the production of RETINAL. Retinal is used within the rods and cones in our eyes to sense light. The easy way to remember this is RETINAL=RETINA. Your body needs VITAMIN A in order to see and READ THIS.
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