A total of 13 types of vitamins are known. Vitamins are soluble in fat or water. Vitamins A, D, E and K are fat soluble. The body stores fat-soluble vitamins in adipose tissue and the liver, and stores of these vitamins can remain in the body for days, sometimes months.
Dietary fats help the body absorb fat-soluble vitamins through the intestinal tract. Water-soluble vitamins do not stay in the body for long and cannot be stored. They leave the body through urine. Water-soluble vitamins of group C and B.
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