Healthy people get adequate nutrients by eating a variety of foods in moderation, rather than by taking supplements. Vitamins are vital for good health. Vitamins are organic compounds that our bodies use, in very little amounts, for a variety of metabolic processes. Vitamins affect every part of your body, including the method your hair, nails and muscles develop and grow, your sight, the way you digest food and your heart and your nervous system. There are 13 vitamins your body needs. Vitamins are divided into two classes based on their solubility. The fat-soluble vitamins include vitamin D, vitamin E, vitamin A, and vitamin K.

The water-soluble vitamins are folate (folic acid), vitamin B12, biotin, vitamin B6, niacin, thiamin, riboflavin, pantothenic acid, and vitamin C (ascorbic acid). Fat-soluble vitamins contain just carbon, hydrogen, and oxygen while water-soluble vitamins contain these three elements plus nitrogen and some-times sulfur. Fat-soluble vitamins can be stored in appreciable amounts in the body and the water-soluble vitamins cannot be stored in the body. You can usually get all your vitamins from the foods you eat. Your body can also make vitamins D and K. People who eat a vegetarian diet may require to take a vitamin B12 supplement.

Works of vitamins in human body

Vitamins help normal growth, provide correct metabolism, ensure good health and defend against several diseases. Vitamin is necessary by the body in small amounts for metabolism, to protect health, and for appropriate growth in children.

Vitamins assist in the formation of hormones, blood cells, nervous-system chemicals, and genetic material. Vitamins mostly serve as catalysts for certain reactions in the body. They merge with proteins to create metabolically active enzymes that in spin produce hundreds of important chemical reactions throughout the body.

The fundamentals of cells depend really upon vitamins. Vitamins are responsible for keeping cells sturdy, binding tissues, fighting infections, etc. Some vitamins may help prevent medical problems. Vitamin A prevents night blindness.

Without vitamins our cells would not work properly and thus our organs would suffer and finally we would no longer be able to survive. In several cases, you may require to take a daily multivitamin for best health. However, high doses of some vitamins can make you sick.

Pregnant women and Vitamin Supplements

Women who are or might become pregnant are advised to take 400 micrograms of folic acid a day and to eat foods rich in this vitamin. Folic acid has been shown to diminish the risk of unborn babies developing defects.

Vitamin supplements may increase risk of death

The supplements vitamin A, vitamin E and beta-carotene are detrimental to health. Vitamin A is associated to a 16% increased risk of dying, beta-carotene to a 7% augment risk and vitamin E to a 4% increase risk.