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| '''Avitaminosis''' is any ] caused by chronic or long-term ] deficiency or caused by a defect in metabolic conversion, such as ] to ]<ref |
'''Avitaminosis''' is any ] caused by chronic or long-term ] deficiency or caused by a defect in metabolic conversion, such as ] to ]. They are designated by the same letter as the vitamin.<ref>{{cite book |title=Vitamins in Animal and Human Nutrition |author=Lee Russell McDowell |publisher=Wiley-Blackwell |edition=2 ed. |year=2000 |isbn=0-8138-2630-6}}</ref><ref>{{cite journal |title=Human-milk intoxication due to B1 avitaminosis |author=Lydia Fehily |journal=British Medical Journal |pages=509- |year=1944 |url=http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2286425/pdf/brmedj03910-0006.pdf |pmc=2286425 |pmid=20785731 |volume=2 |issue=4374}}</ref> | ||
| {{Lien web | |||
| | author = Chaine Bénédicte | |||
| | lien auteur = | |||
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| | url =http://www.therapeutique-dermatologique.org/spip.php?article1433&lang=en | |||
| |title =Vitamin deficiences | |||
| | série = | |||
| | jour = | |||
| | month =April | |||
| | year = 2012 | |||
| | website = http://www.therapeutique-dermatologique.org/ | |||
| | éditeur = | |||
| | isbn = | |||
| | page = | |||
| | citation = | |||
| | en ligne le = | |||
| | consulté le = july, 21th 2012 | |||
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| }} | |||
| </ref> | |||
| . They are designated by the same letter as the vitamin.<ref>{{cite book |title=Vitamins in Animal and Human Nutrition |author=Lee Russell McDowell |publisher=Wiley-Blackwell |edition=2 ed. |year=2000 |isbn=0-8138-2630-6}}</ref><ref>{{cite journal |title=Human-milk intoxication due to B1 avitaminosis |author=Lydia Fehily |journal=British Medical Journal |pages=509- |year=1944 |url=http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2286425/pdf/brmedj03910-0006.pdf |pmc=2286425 |pmid=20785731 |volume=2 |issue=4374}}</ref> | |||
| Conversely ] is the syndrome of symptoms caused by over-retention of fat-soluble vitamins in the body. | Conversely ] is the syndrome of symptoms caused by over-retention of fat-soluble vitamins in the body. | ||
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| Vitamin deficiency | |
|---|---|
| Specialty | Endocrinology  |
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.
Conversely hypervitaminosis is the syndrome of symptoms caused by over-retention of fat-soluble vitamins in the body.
Types
Avitaminoses include:
- Vitamin A deficiency causes xerophthalmia or night blindness.
- Thiamine deficiency causes beriberi.
- Niacin deficiency causes pellagra.
- Vitamin B12 deficiency leads to megaloblastic anemia and subacute combined degeneration of spinal cord.
- Vitamin C deficiency leads to scurvy.
- Vitamin D deficiency causes rickets.
- Vitamin K deficiency causes impaired coagulation.
References
- Lee Russell McDowell (2000). Vitamins in Animal and Human Nutrition (2 ed. ed.). Wiley-Blackwell. ISBN 0-8138-2630-6.
{{cite book}}:|edition=has extra text (help) - Lydia Fehily (1944). "Human-milk intoxication due to B1 avitaminosis" (PDF). British Medical Journal. 2 (4374): 509-. PMC 2286425. PMID 20785731.
See also
- Essential nutrient
- Illnesses related to poor nutrition
- Vitamin#Human vitamins for more details.
- Orthomolecular medicine