Vitamin D toxicity - Revision history

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2025-04-08T19:25:36Z

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			{{SI}}
			{{Infobox medical condition
			\| name = Vitamin D toxicity
			\| image = [[File:Cholecalciferol.svg\|200px]]
			\| caption = [[Cholecalciferol]], a form of [[Vitamin D]]
			\| synonyms = Hypervitaminosis D
			\| field = [[Endocrinology]]
			\| symptoms = [[Hypercalcemia]], [[nausea]], [[vomiting]], [[weakness]], [[frequent urination]], [[kidney stones]]
			\| complications = [[Kidney failure]], [[cardiac arrhythmias]]
			\| onset = Gradual, with excessive [[vitamin D]] intake
			\| duration = Variable, depending on the level of [[vitamin D]] and [[calcium]]
			\| causes = Excessive intake of [[vitamin D]] supplements
			\| risks = High-dose [[vitamin D]] supplements, [[granulomatous disease]], [[sarcoidosis]]
			\| diagnosis = [[Blood test]] for [[calcium]], [[25-hydroxyvitamin D]]
			\| differential = [[Hyperparathyroidism]], [[malignancy]]
			\| prevention = Avoid excessive [[vitamin D]] supplementation
			\| treatment = Discontinuation of [[vitamin D]], [[corticosteroids]], [[bisphosphonates]]
			\| prognosis = Good with treatment, but can be severe if untreated
			\| frequency = Rare
			}}
	{{Short description\|Condition of excessive vitamin D levels in the body}}		{{Short description\|Condition of excessive vitamin D levels in the body}}
	~~{{Use dmy dates\|date=October 2023}}~~

	==~~Overview~~==		== Introduction ==
	[[Vitamin D toxicity]], also known as hypervitaminosis D, is a rare but potentially serious condition that occurs when there is an excessive accumulation of vitamin D in the body. This condition can lead to hypercalcemia, which is an elevated level of calcium in the blood, and can cause various health issues.		[[Vitamin D toxicity]], also known as hypervitaminosis D, is a rare but potentially serious condition that occurs when there is an excessive accumulation of vitamin D in the body. This condition can lead to hypercalcemia, which is an elevated level of calcium in the blood, and can cause various health issues.

	==Causes==		==Causes==
	Vitamin D toxicity is usually caused by excessive intake of vitamin D supplements rather than dietary intake or sun exposure. The body regulates the amount of vitamin D produced from sunlight, and it is unlikely to reach toxic levels through diet alone. However, high doses of vitamin D supplements can lead to toxicity.		Vitamin D toxicity is usually caused by excessive intake of vitamin D supplements rather than dietary intake or sun exposure. The body regulates the amount of vitamin D produced from sunlight, and it is unlikely to reach toxic levels through diet alone. However, high doses of vitamin D supplements can lead to toxicity.

	==Symptoms==		==Symptoms==
	The symptoms of vitamin D toxicity are primarily related to hypercalcemia and may include:		The symptoms of vitamin D toxicity are primarily related to hypercalcemia and may include:
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	* Confusion		* Confusion
	* Fatigue		* Fatigue

	==Pathophysiology==		==Pathophysiology==
	~~[[File:Cholecalciferol.svg\|thumb\|right\|Chemical structure of cholecalciferol, a form of vitamin D]]~~
	Vitamin D is a fat-soluble vitamin that is essential for maintaining bone health and calcium homeostasis. It is converted in the liver to 25-hydroxyvitamin D, and then in the kidneys to its active form, calcitriol. Excessive levels of vitamin D increase calcium absorption from the gut, leading to hypercalcemia.		Vitamin D is a fat-soluble vitamin that is essential for maintaining bone health and calcium homeostasis. It is converted in the liver to 25-hydroxyvitamin D, and then in the kidneys to its active form, calcitriol. Excessive levels of vitamin D increase calcium absorption from the gut, leading to hypercalcemia.

	==Diagnosis==		==Diagnosis==
	Diagnosis of vitamin D toxicity is based on clinical symptoms, history of excessive vitamin D intake, and laboratory tests showing elevated levels of 25-hydroxyvitamin D and calcium in the blood.		Diagnosis of vitamin D toxicity is based on clinical symptoms, history of excessive vitamin D intake, and laboratory tests showing elevated levels of 25-hydroxyvitamin D and calcium in the blood.

	==Treatment==		==Treatment==
	The primary treatment for vitamin D toxicity is to stop taking vitamin D supplements and reduce calcium intake. In severe cases, hospitalization may be required to manage hypercalcemia with intravenous fluids and medications such as bisphosphonates or corticosteroids.		The primary treatment for vitamin D toxicity is to stop taking vitamin D supplements and reduce calcium intake. In severe cases, hospitalization may be required to manage hypercalcemia with intravenous fluids and medications such as bisphosphonates or corticosteroids.

	==Prevention==		==Prevention==
	To prevent vitamin D toxicity, it is important to adhere to recommended dietary allowances and avoid excessive supplementation. Regular monitoring of blood levels of vitamin D and calcium is advised for individuals taking high doses of vitamin D.		To prevent vitamin D toxicity, it is important to adhere to recommended dietary allowances and avoid excessive supplementation. Regular monitoring of blood levels of vitamin D and calcium is advised for individuals taking high doses of vitamin D.
			==See also==
	==~~Related pages~~==
	* [[Vitamin D]]		* [[Vitamin D]]
	* [[Hypercalcemia]]		* [[Hypercalcemia]]
	* [[Kidney stones]]		* [[Kidney stones]]

	[[Category:Vitamin D]]		[[Category:Vitamin D]]
	[[Category:Medical conditions related to hypervitaminosis]]		[[Category:Medical conditions related to hypervitaminosis]]

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	~~'''~~Vitamin D toxicity~~'''~~, also known as ~~'''~~hypervitaminosis D~~'''~~, is a rare but potentially serious condition that occurs when ~~you have~~ excessive ~~amounts~~ of [[vitamin D]] in ~~your~~ body. ~~Vitamin D is a fat-soluble vitamin that~~ is ~~essential for maintaining the balance~~ of calcium in the ~~body~~ and ~~is crucial for bone health. However, too much vitamin D~~ can ~~lead to a range of~~ health ~~problems~~.		{{Short description\|Condition of excessive vitamin D levels in the body}}
			{{Use dmy dates\|date=October 2023}}

			==Overview==
			[[Vitamin D toxicity]], also known as hypervitaminosis D, is a rare but potentially serious condition that occurs when there is an excessive accumulation of vitamin D in the body. This condition can lead to hypercalcemia, which is an elevated level of calcium in the blood, and can cause various health issues.

	==Causes==		==Causes==
	Vitamin D toxicity is usually caused by ~~large doses~~ of [[vitamin D supplements]]. ~~Unlike~~ vitamin D ~~obtained~~ from sunlight ~~or food~~, ~~which has a limited risk of toxicity~~, high doses of supplements can ~~accumulate in the body to toxic levels. It is important~~ to ~~note that vitamin D~~ toxicity ~~is not caused by excessive exposure to sunlight, as the body regulates the amount of vitamin D produced from sunlight~~.		Vitamin D toxicity is usually caused by excessive intake of vitamin D supplements rather than dietary intake or sun exposure. The body regulates the amount of vitamin D produced from sunlight, and it is unlikely to reach toxic levels through diet alone. However, high doses of vitamin D supplements can lead to toxicity.

	==Symptoms==		==Symptoms==
	The ~~main consequence~~ of vitamin D toxicity is a ~~buildup of~~ calcium in the ~~blood ([[hypercalcemia]]), which can cause nausea, vomiting, weakness~~, and ~~frequent urination. Symptoms might progress~~ to ~~bone pain and kidney problems~~, ~~such as the formation~~ of calcium ~~stones. Severe~~ hypercalcemia ~~can also lead to confusion, disorientation, and problems with the heart rhythm~~.		The symptoms of vitamin D toxicity are primarily related to hypercalcemia and may include:
			* Nausea and vomiting
			* Weakness
			* Frequent urination
			* Kidney stones
			* Bone pain
			* Confusion
			* Fatigue

			==Pathophysiology==
			[[File:Cholecalciferol.svg\|thumb\|right\|Chemical structure of cholecalciferol, a form of vitamin D]]
			Vitamin D is a fat-soluble vitamin that is essential for maintaining bone health and calcium homeostasis. It is converted in the liver to 25-hydroxyvitamin D, and then in the kidneys to its active form, calcitriol. Excessive levels of vitamin D increase calcium absorption from the gut, leading to hypercalcemia.

	==Diagnosis==		==Diagnosis==
	Diagnosis of vitamin D toxicity is based on ~~a combination of~~ clinical history~~, physical examination~~, and laboratory tests~~. Blood tests are crucial for measuring serum~~ levels of 25-hydroxyvitamin D ~~(25(OH)D), which reflect vitamin D status,~~ and ~~serum~~ calcium ~~levels, which can indicate hypercalcemia~~.		Diagnosis of vitamin D toxicity is based on clinical symptoms, history of excessive vitamin D intake, and laboratory tests showing elevated levels of 25-hydroxyvitamin D and calcium in the blood.

	==Treatment==		==Treatment==
	The primary treatment for vitamin D toxicity is to stop taking vitamin D supplements ~~immediately~~. In cases ~~where hypercalcemia is present~~, ~~treatment~~ may ~~include hydration~~ with intravenous fluids, medications ~~to decrease blood calcium levels, and in severe cases, dialysis. Monitoring of calcium and vitamin D levels is necessary until they return to a safe range~~.		The primary treatment for vitamin D toxicity is to stop taking vitamin D supplements and reduce calcium intake. In severe cases, hospitalization may be required to manage hypercalcemia with intravenous fluids and medications such as bisphosphonates or corticosteroids.

	==Prevention==		==Prevention==
	~~Prevention of~~ vitamin D toxicity is ~~primarily through awareness~~ and ~~moderation in the use~~ of vitamin D ~~supplements. It~~ is ~~important to follow recommended guidelines~~ for vitamin D ~~intake and not exceed the upper limit unless under medical supervision. Individuals should consult healthcare providers before starting any new supplement regimen~~.		To prevent vitamin D toxicity, it is important to adhere to recommended dietary allowances and avoid excessive supplementation. Regular monitoring of blood levels of vitamin D and calcium is advised for individuals taking high doses of vitamin D.

	==~~Conclusion~~==		==Related pages==
	~~While vitamin~~ D is essential for health, excessive intake can lead to toxicity with serious health consequences. Awareness of the potential risks associated with high doses of vitamin D supplements and adherence to recommended guidelines can help prevent vitamin D toxicity.		* [[Vitamin D]]
			* [[Hypercalcemia]]
			* [[Kidney stones]]

	[[Category:Vitamin D]]		[[Category:Vitamin D]]
	[[Category:~~Toxic effects of substances chiefly nonmedicinal as~~ to ~~source~~]]		[[Category:Medical conditions related to hypervitaminosis]]
	~~[[Category:Endocrine, nutritional and metabolic diseases]]~~

	~~{{medicine-stub}}~~

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2024-03-27T19:08:04Z

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'''Vitamin D toxicity''', also known as '''hypervitaminosis D''', is a rare but potentially serious condition that occurs when you have excessive amounts of [[vitamin D]] in your body. Vitamin D is a fat-soluble vitamin that is essential for maintaining the balance of calcium in the body and is crucial for bone health. However, too much vitamin D can lead to a range of health problems.

==Causes==
Vitamin D toxicity is usually caused by large doses of [[vitamin D supplements]]. Unlike vitamin D obtained from sunlight or food, which has a limited risk of toxicity, high doses of supplements can accumulate in the body to toxic levels. It is important to note that vitamin D toxicity is not caused by excessive exposure to sunlight, as the body regulates the amount of vitamin D produced from sunlight.

==Symptoms==
The main consequence of vitamin D toxicity is a buildup of calcium in the blood ([[hypercalcemia]]), which can cause nausea, vomiting, weakness, and frequent urination. Symptoms might progress to bone pain and kidney problems, such as the formation of calcium stones. Severe hypercalcemia can also lead to confusion, disorientation, and problems with the heart rhythm.

==Diagnosis==
Diagnosis of vitamin D toxicity is based on a combination of clinical history, physical examination, and laboratory tests. Blood tests are crucial for measuring serum levels of 25-hydroxyvitamin D (25(OH)D), which reflect vitamin D status, and serum calcium levels, which can indicate hypercalcemia.

==Treatment==
The primary treatment for vitamin D toxicity is to stop taking vitamin D supplements immediately. In cases where hypercalcemia is present, treatment may include hydration with intravenous fluids, medications to decrease blood calcium levels, and in severe cases, dialysis. Monitoring of calcium and vitamin D levels is necessary until they return to a safe range.

==Prevention==
Prevention of vitamin D toxicity is primarily through awareness and moderation in the use of vitamin D supplements. It is important to follow recommended guidelines for vitamin D intake and not exceed the upper limit unless under medical supervision. Individuals should consult healthcare providers before starting any new supplement regimen.

==Conclusion==
While vitamin D is essential for health, excessive intake can lead to toxicity with serious health consequences. Awareness of the potential risks associated with high doses of vitamin D supplements and adherence to recommended guidelines can help prevent vitamin D toxicity.

[[Category:Vitamin D]]
[[Category:Toxic effects of substances chiefly nonmedicinal as to source]]
[[Category:Endocrine, nutritional and metabolic diseases]]

{{medicine-stub}}