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Medical condition
Vitamin overdose
Supplements of calcium and vitamin D
Specialty
Toxicology
Causes
Excessive consumption of vitamins
Hypervitaminosis is a condition of abnormally high storage levels of vitamins, which can lead to various symptoms as over excitement, irritability, or even toxicity. Specific medical names of the different conditions are derived from the given vitamin involved: an excess of vitamin A, for example, is called hypervitaminosis A. Hypervitaminoses are primarily caused by fat-soluble vitamins (D and A), as these are stored by the body for longer than the water-soluble vitamins.[1]
Generally, toxic levels of vitamins stem from high supplement intake and not always from natural sources but rather the mix of natural, derived vitamins and enhancers (vitamin boosters). Toxicities of fat-soluble vitamins can also be caused by a large intake of highly fortified foods, but natural food in modest levels rarely deliver extreme or dangerous levels of fat-soluble vitamins.[2] The Dietary Reference Intake recommendations from the United States Department of Agriculture define a "tolerable upper intake level" for most vitamins.
For those who are entirely healthy and do not experience long periods of avitaminosis, vitamin overdose can be avoided by not taking more than the normal or recommended amount of multi-vitamin supplement shown on the bottle and not ingesting multiple vitamin-containing supplements concurrently.[3]
^"Office of Dietary Supplements - Vitamin A". ods.od.nih.gov. Retrieved 2016-02-03.
^Cite error: The named reference candc was invoked but never defined (see the help page).
^Cite error: The named reference MedlinePlus 2019 was invoked but never defined (see the help page).
the body than water-soluble vitamins. Conditions include: Hypervitaminosis A Hypervitaminosis D Vitamin B3 § Toxicity Megavitamin-B6 syndrome Prevention...
Hypervitaminosis A refers to the toxic effects of ingesting too much preformed vitamin A (retinyl esters, retinol, and retinal). Symptoms arise as a result...
Vitamin D toxicity, or hypervitaminosis D is the toxic state of an excess of vitamin D. The normal range for blood concentration in adults is 20 to 50...
hypervitaminosis, which occurs mainly for fat-soluble vitamins if over-consumed by excessive supplementation. Hypervitaminosis A and hypervitaminosis...
Vitamin E is a group of eight fat soluble compounds that include four tocopherols and four tocotrienols. Vitamin E deficiency, which is rare and usually...
accumulates in the liver, and can reach harmful levels sufficient to cause hypervitaminosis A. Pregnant women may want to consider consulting a doctor when taking...
upper limits for safe intake. Vitamin A toxicity also referred to as hypervitaminosis A, occurs when there is too much vitamin A accumulating in the body...
A and D can accumulate in the body, which can result in dangerous hypervitaminosis. Fat-soluble vitamin deficiency due to malabsorption is of particular...
vitamin involved: an excess of vitamin A, for example, is called "hypervitaminosis A". Iron overload disorders are diseases caused by the overaccumulation...
metabolic and nutritional disorders like soft tissue mineralization and hypervitaminosis D, and infectious diseases like gastritis,[citation needed] osteomyelitis...
lymphoma, leukemia Ovarian small cell carcinoma of the hypercalcemic type Hypervitaminosis D (vitamin D intoxication) Elevated 1,25(OH)2D (see calcitriol under...
Rickets, osteomalacia Hypervitaminosis D (dehydration, vomiting, constipation) Vitamin E Neurological disease Hypervitaminosis E (anticoagulant: excessive...
is unsafe to eat because it is very high in vitamin A and can cause hypervitaminosis A, a dangerous disorder. This has been recognized since at least 1597...
that the pair ingested enough liver to cause the toxicity syndrome hypervitaminosis A, which can be fatal. Mertz may have eaten more of the liver because...
such as retinyl palmitate leads to adverse physiological reactions (hypervitaminosis A). Retinyl palmitate is used as an antioxidant and a source of vitamin...
Westerner to observe hypervitaminosis A caused by consumption of the liver of a polar bear. Lips, Paul (23 January 2003). "Hypervitaminosis A and Fractures"...
This culture-bound syndrome is possibly linked to vitamin A toxicity (hypervitaminosis A). The native Inughuit diet or Eskimo nutrition provides rich sources...
tolerated. High doses may cause enlargement of the liver, dry skin, and hypervitaminosis A. High doses during pregnancy may harm the fetus. The body converts...
skin. Less commonly, angular cheilitis is associated with primary hypervitaminosis A, which can occur when large amounts of liver (including cod liver...
Complications Vision loss Usual onset 20–50 years old Risk factors Hypervitaminosis A, obesity, tetracyclines Diagnostic method Based on symptoms, lumbar...
rodenticide bait or other forms of cholecalciferol are directly ingested. Hypervitaminosis D, Vitamin D poisoning Ergocalciferol, vitamin D2 25-Hydroxyvitamin...
Mawson's related illness remain uncertain; a 1969 study suggested hypervitaminosis A, presumably caused by the men eating the livers of their Greenland...
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