https://wiki.tiffa.net/w/index.php?action=history&feed=atom&title=Translations%3AVitamin_D%2F76%2FenTranslations:Vitamin D/76/en - Revision history2026-05-27T01:45:51ZRevision history for this page on the wikiMediaWiki 1.43.0https://wiki.tiffa.net/w/index.php?title=Translations:Vitamin_D/76/en&diff=110201&oldid=prevFuzzyBot: Importing a new version from external source2024-01-25T23:41:41Z<p>Importing a new version from external source</p>
<p><b>New page</b></p><div>== Excess ==<br />
{{further|hypervitaminosis D}}<br />
Vitamin D toxicity is rare. It is caused by supplementing with high doses of vitamin D rather than sunlight. The threshold for vitamin D toxicity has not been established; however, according to some research, the tolerable upper intake level (UL) is 4,000 [[International unit|IU]]/day for ages 9–71 (100{{nbsp}}μg/day), while other research concludes that, in healthy adults, sustained intake of more than 50,000{{nbsp}}IU/day (1250{{nbsp}}μg) can produce overt [[toxicity]] after several months and can increase serum 25-hydroxyvitamin D levels to 150{{nbsp}}ng/mL and greater. Those with certain medical conditions, such as primary [[hyperparathyroidism]], are far more sensitive to vitamin D and develop [[hypercalcemia]] in response to any increase in vitamin D nutrition, while maternal hypercalcemia during pregnancy may increase fetal sensitivity to effects of vitamin D and lead to a syndrome of intellectual disability and facial deformities.</div>FuzzyBot