Science Fair Project Encyclopedia
Avitaminosis
Avitaminosis is any disease caused by chronic or long-term vitamin deficiency or caused by a defect in metabolic conversion, such as tryptophan to niacin. They are designated by the same letter as the vitamin. Avitaminoses include
- avitaminosis A, xerophthalmia or night blindness
- thiamine deficiency causes beriberi
- niacin deficiency causes pellagra
- avitaminosis C leads to scurvy
- vitamin D deficiency causes rickets
Conversely hypervitaminosis is the syndrome of symptoms caused by over-retention of fat-soluble vitamins in the body.
10-26-2009 08:16:03
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details