Vitamins

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Vitamins

Definition

Vitamins are a group of substances essential for normal cell function, growth and development.

There are 13 essential vitamins. That means they are needed for the body to function. They are:

Vitamin A
Vitamin C
Vitamin D
Vitamin E
Vitamin K
Vitamin B1 (thiamine)
Vitamin B2 (riboflavin)
Vitamin B3 (niacin)
Pantothenic acid
Biotin
Vitamin B6
Vitamin B12
Folate (folic acid)

Vitamins are grouped into two categories:

Fat-soluble vitamins are stored in the body's fatty tissue.
Water-soluble vitamins must be used by the body right away. Any left over water-soluble vitamins leave the body through the urine. Vitamin B12 is the only water-soluble vitamin that can be stored in the liver for many years.

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