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Drugs and diseases reference index

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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «V»:

  1. Vitamin B -- pantothenic acid Vitamin B -- pantothenic acid
    Vitamin B -- pantothenic acid: This is one of the less well known B vitamins, perhaps because it is widely distributed in nature. Pantothenic acid is virtually ubiquitous. It is present in foods as diverse as poultry, soybeans, yogurt, and sweet potatoes. No naturally occurring disease due to a defi...
  2. Vitamin B1 Vitamin B1
    Vitamin B1: Thiamine. Vitamin B1 (thiamine) acts as a coenzyme in the metabolism of the body. Deficiency of thiamine leads to the disease beriberi, a disease affecting the heart and nervous system. The word "vitamin" was coined in 1911 by the Warsaw-born biochemist Casimir Funk (1884-1967). At t...
  3. Vitamin B1 deficiency, infantile Vitamin B1 deficiency, infantile
    Vitamin B1 deficiency, infantile: See: Infantile beriberi....
  4. Vitamin B12 Vitamin B12
    Vitamin B12: A vitamin important for the normal formation of red blood cells and the health of the nerve tissues. Undetected and untreated vitamin B12 deficiency can lead to anemia and permanent nerve and brain damage. Pernicious anemia is a blood disorder caused by inadequate vitamin B12 in t...
  5. Vitamin B12-responsive methylmalonicaciduria Vitamin B12-responsive methylmalonicaciduria
    Vitamin B12-responsive methylmalonicaciduria: An inherited metabolic (biochemical) disease that, unless effectively treated, causes young children to become mentally retarded. The defect in some (but not all) of these children has to do with an inability to use the vitamin B12 they ingest. If these ...
  6. Vitamin B15 Vitamin B15
    Vitamin B15: An old name for dimethylglycine (DMG, pangamic acid), which is no longer considered to be a vitamin by the strict definition of that word....
  7. Vitamin B2 Vitamin B2
    Vitamin B2: An essential nutrient found in meat, dairy foods, plant foods and grain products. The body requires vitamin B2 to break down food components, maintain tissue, and absorb other nutrients. Like other vitamins, vitamin B2 is an organic compound. An organic compound is a substance that (1) ...
  8. Vitamin B3 Vitamin B3
    Vitamin B3: Vitamin B3 is niacin. Deficiency of niacin causes pellagra. Pellagra was known as the "disease of the four D's" -- dermatitis, diarrhea, dementia and death. The disease is specifically characterized by: Dermatitis: A rash on areas of the skin exposed to light or trauma and ulcerati...
  9. Vitamin B5 Vitamin B5
    Vitamin B5: Vitamin B5 is pantothenic acid, one of the less well known B vitamins, perhaps because it is widely distributed in nature. Pantothenic acid is virtually ubiquitous. It is present in foods as diverse as poultry, soybeans, yogurt, and sweet potatoes. No naturally occurring disease due to a...
  10. Vitamin B6 Vitamin B6
    Vitamin B6: A group of closely related chemical compounds with related names -- pyridoxine, pyridoxal and pyridoxamine -- that are transformed within the body to yet another form of vitamin B6, pyridoxal phosphate, that acts as a coenzyme. (A number of vitamins serve as coenzymes, substances that en...
  11. Vitamin C Vitamin C
    Vitamin C: An essential nutrient found mainly in fruits and vegetables. The body requires vitamin C to form and maintain bones, blood vessels, and skin. Like other vitamins, vitamin C is an organic compound. An organic compound is a substance that (1) occurs in living things, or organisms (henc...
  12. Vitamin D Vitamin D
    Vitamin D: A steroid vitamin which promotes the intestinal absorption and metabolism of calcium and phosphorus. Under normal conditions of sunlight exposure, no dietary supplementation is necessary because sunlight promotes adequate vitamin D synthesis in the skin. Deficiency can lead to bone deform...
  13. Vitamin D requirement Vitamin D requirement
    Vitamin D requirement: The amount of vitamin D recommended per day, which varies according to the age of the individual. Recommendations are as follows: For Children: The National Academy of Sciences and American Academy of Pediatrics have recommended that all infants, including those who are exclu...
  14. Vitamin D3 Vitamin D3
    Vitamin D3: A vitamin produced by the body when exposed to ultraviolet light or obtained from dietary sources. Vitamin D3 is a hormone that has an important role in calcium and phosphorus metabolism. Technically, vitamin D3 is not a vitamin because the body can produce it. Also known as cholecalcife...
  15. Vitamin E Vitamin E
    Vitamin E: Alpha-tocopherol, an antioxidant vitamin which binds oxygen free radicals that can cause tissue damage. Deficiency of vitamin E can lead to anemia. Vitamin E may play a possible role in preventing heart disease and cancer of the lung and prostate. Vitamin E and the heart: In the Nurses'...