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Hypervitaminosis A refers to the toxic effects of ingesting too much preformed vitamin A (retinyl esters, retinol, and retinal). Symptoms arise as a result of altered bone metabolism and altered metabolism of other fat-soluble vitamins. Hypervitaminosis A is believed to have occurred in early humans, and the problem has persisted throughout ...
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.
Vitamin A toxicity also referred to as hypervitaminosis A, occurs when there is too much vitamin A accumulating in the body. Symptoms may include nervous system effects, liver abnormalities, fatigue, muscle weakness, bone and skin changes, and others. The adverse effects of both acute and chronic toxicity are reversed after consumption of high ...
"Older adults should be careful with vitamin A because it can potentially reduce bone density, as well as cause liver damage or joint pain, and symptoms like nausea, headache or diarrhea," Norman ...
Taking too much vitamin D. ... “Vitamin supplements can have potentially very serious risks and side effects when taken in excess,” Stevens wrote. ... “More serious symptoms can include ...
Megavitamin-B 6 syndrome, also known as hypervitaminosis B 6, vitamin B 6 toxicity, and vitamin B 6 excess, [a] is a medical condition characterized by adverse effects resulting from excessive intake of vitamin B 6.
Getting too much iodine may cause side effects for you. For most adults, the recommended daily allowance for iodine is 150 mcg, which is the amount commonly found in multivitamins.
Symptoms appear several months after excessive doses of vitamin D are administered. A mutation of the CYP24A1 gene can lead to a reduction in the degradation of vitamin D and thus to vitamin toxicity without high oral intake (see Vitamin D: Excess). Symptoms of vitamin D toxicity may include the following: [2] Dehydration; Vomiting; Diarrhea