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  2. Hypervitaminosis A - Wikipedia

    en.wikipedia.org/wiki/Hypervitaminosis_A

    Preformed vitamin A is fat-soluble and high levels have been reported to affect metabolism of the other fat-soluble vitamins D, [24] E, and K. The toxic effects of preformed vitamin A might be related to altered vitamin D metabolism, concurrent ingestion of substantial amounts of vitamin D, or binding of vitamin A to receptor heterodimers ...

  3. The dark side of daily vitamin D supplements: After a man ...

    www.aol.com/finance/dark-side-daily-vitamin-d...

    Vitamin supplements can have potentially very serious risks and side effects when taken in excess,” Stevens wrote. “Current food labeling requirements do not require these risks and side ...

  4. Hypervitaminosis - Wikipedia

    en.wikipedia.org/wiki/Hypervitaminosis

    With few exceptions, like some vitamins from B-complex, hypervitaminosis usually occurs with the fat-soluble vitamins A and D, which are stored, respectively, in the liver and fatty tissues of the body. These vitamins build up and remain for a longer time in the body than water-soluble vitamins. [2] Conditions include: Hypervitaminosis A

  5. 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.

  6. Is It Safe to Use Expired Vitamins? The Truth About Vitamin ...

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    What are the possible side effects of taking expired vitamins? “There isn’t a promise that the vitamin will pack a full punch if you take it after the expiration date, but there aren’t any ...

  7. Taking This Daily Vitamin Could Slash Dementia Risk By 40 ...

    www.aol.com/taking-daily-vitamin-could-slash...

    Best Vitamin D Supplements High Potency Vitamin D-3 Over 26,000 customers on Amazon have rated this supplement at 4.8 stars, with some users claiming they saw immediate changes in their overall ...

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

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

    Vitamin D supplements, with or without calcium, are important for overall health. However, vitamin D supplements have no effect on preventing falls or fractures in older adults, according to the U ...

  9. Vitamin D - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D

    Vitamin D 3 (cholecalciferol) is produced industrially by exposing 7-dehydrocholesterol to UVB and UVC light, followed by purification. The 7-dehydrocholesterol is sourced as an extraction from lanolin, a waxy skin secretion in sheep's wool. [199] Vitamin D 2 (ergocalciferol) is produced in a similar way using ergosterol from yeast as a ...

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