Introduction

One of the fat-soluble vitamins, vitamin D forms two main forms of vitamin D2 or ergocalciferol and Vitamin D3 or cholecalciferol are. Vitamin D2 is synthesized by plants, whereas vitamin D3 is synthesized by the body. Vitamin D is naturally present in a variety of food sources and dietary supplements, and is also produced with the help of the sun. It is produced in the body when ultraviolet B or UVB rays from sunlight reaches the skin. The liver and kidneys ultimately contribute to vitamin D, a hormone active to transfer form.

functions of vitamin D

tetany caused by hypocalcemia can participate vitamin D deficiency in infants and adults. This condition can cause symptoms such as loss of feeling in the lip or tongue areas and fingers, facial spasm and in the worst case, seizures.

Recommended daily dose of vitamin D

doses or taking vitamin D is age groups. These amounts are essential for normal growth and maintain bone health and normal calcium metabolism in the body. The adequate intake for vitamin D or AIS specified under the assumption that vitamin D is not synthesized by sunlight.

From birth to 13 years, the recommended AI for children from 5 micrograms or 200 IU is based; old for men and women aged 14-50 years, 5 mcg or 200 IU is required for Men and women aged 51-70 years, 10 mcg or 400 IU is required, men and women require up to age 71 and up to 15 mcg or 600 IU of vitamin D. Pregnant women and nursing mothers must be 5 mcg or 200 IU of vitamin .

Vitamin D Food Sources

Only a few foods contain vitamin D. Sources best sources of vitamin D are fish liver oil and meat. There are also small amounts of vitamin D in the form of vitamin D3 in milk products like cheese and eggs and beef liver and found. Some species of fungi also contain different amounts of vitamin D2

common sources of vitamin D include the following:.

* cod liver oil

* Fish such as salmon, mackerel, tuna, sardines

* including non-fat milk, reduced fat, whole or vitamin D fortified

* Margarine

* Cereals * Egg

* Beef liver

* Swiss cheese

* fortified orange juice

* Fortified rice or soy beverage

The need for increased amounts of

Since obtaining sufficient quantities of Vitamin D in the diet can consume very difficult, many people are now vitamin D fortified foods, to maintain a healthy dose of the vitamin. There are some groups that have, however, increased amounts of vitamin D:

* Breast-fed infants, since vitamin D can not be fed by breast milk alone

* Older people on the basis of fact that synthesis of vitamin D decreases with age and ability of the kidneys to convert vitamin D

* reduces people with limited sun exposure especially those in northern latitudes covered, those robes or the head or those with jobs that prevent them with sun exposure

* People with darker skin color than more skin pigments such as melanin reduces the ability of the skin vitamin D

* People with fat produce malabsorption conditions such as Crohn’s disease experience, cystic fibrosis, liver, and celiac disease or patients, the surgical removal of part of the stomach or intestine.

* People who are overweight. An increased amount of subcutaneous fat may break more of the vitamin D and somehow change their release into the circulation.

interaction of vitamin D by prescription drugs

http://www. vitamins-australia.com.au or contact us at phone 1300-575-449


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