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2. Vitamin D toxicity - Wikipedia

   en.wikipedia.org/wiki/Vitamin_D_toxicity

   Vitamin D compounds, specifically cholecalciferol (D3) and ergocalciferol (D2), are used in rodenticides due to their ability to induce hypercalcemia, a condition characterized by elevated calcium levels in the blood. This overdose leads to organ failure and is pharmacologically similar to vitamin D's toxic effects in humans.

3. Vitamin D - Wikipedia

   en.wikipedia.org/wiki/Vitamin_D

   A third important effect of PTH on the kidneys is stimulation of the conversion of 25-hydroxy vitamin D into 1,25-dihydroxy vitamin D (calcitriol). [216] This form of vitamin D is the active hormone which promotes calcium uptake from the intestine via the action of calbindin . [ 218 ]

4. Calcitriol - Wikipedia

   en.wikipedia.org/wiki/Calcitriol

   Calcitriol is a hormone and the active form of vitamin D, normally made in the kidney. [8] [9] [10] It is also known as 1,25-dihydroxycholecalciferol.It binds to and activates the vitamin D receptor in the nucleus of the cell, which then increases the expression of many genes. [11]

5. This is the best time of day to take vitamin D supplements ...

   www.aol.com/news/best-time-day-vitamin-d...

   Certain conditions can affect the body's ability to synthesize or absorb vitamin D, such as liver disease, kidney disease and inflammatory bowel disease, Adamian adds.

6. Calcium metabolism - Wikipedia

   en.wikipedia.org/wiki/Calcium_metabolism

   Osteoporosis, osteomalacia and rickets are bone disorders linked to calcium metabolism disorders and effects of vitamin D. Renal osteodystrophy is a consequence of chronic kidney failure related to the calcium metabolism. A diet adequately rich in calcium may reduce calcium loss from bone with advancing (post-menopausal) age. [30]

7. Vitamin D may not prevent fractures or falls in older adults ...

   www.aol.com/vitamin-d-may-not-prevent-102300100.html

   Researchers believe there may be a link between long-term vitamin D deficiency and the development of autoimmune conditions, such as type 1 diabetes and rheumatoid arthritis, but more research is ...