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

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

    Most over-the-counter vitamin D supplements are between 1,000 and 5,000 IU, and some are as high as 10,000 IU, says Adamian. "There's so many different supplements, so it's very important to ...

  3. Taking This Daily Vitamin Could Help You Live Months Longer ...

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

    A new study found that omega-3 slowed biological aging by up to four months, with vitamin D and strength training boosting the effects: A neurologist explains.

  4. The Best Supplements for Men Over 50, According to ... - AOL

    www.aol.com/best-supplements-men-over-50...

    Zinc and vitamin D are also essential for bone health but have the added benefit for men over 50 by reducing the risk of erectile dysfunction, a condition commonly affecting men over age 40 ...

  5. Vitamin D - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D

    For example, CYP11A1, an enzyme chiefly known for its role in steroidogenesis, has been found to hydroxylate vitamin D3 at several positions, including C-20, C-22, and C-23, without cleaving the side chain. The resulting metabolites, such as 20-hydroxyvitamin D3 and 20,23-dihydroxyvitamin D3, act as inverse agonists for RORα and RORγ2.

  6. Vitamin D and neurology - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D_and_neurology

    Vitamin D (the inactive version) is mainly from two forms: vitamin D 3 and vitamin D 2.Vitamin D 3, or cholecalciferol, is formed in the skin after exposure to sunlight or ultra violet radiation or from D 3 supplements or fortified food sources.

  7. Cholecalciferol - Wikipedia

    en.wikipedia.org/wiki/Cholecalciferol

    LD 50 of 4.4 mg/kg has been reported in rabbits, with lethality to almost all rabbits ingesting doses greater than 15 mg/kg. [54] Toxicity has been reported across a wide range of cholecalciferol dosages, with LD 50 as high as 88 mg/kg or LD Lo as low as 2 mg/kg reported for dogs. [55]

  8. Daily omega-3 supplements and regular exercise may slow aging

    www.aol.com/daily-omega-3-supplements-regular...

    A new study suggests that omega-3 and vitamin D supplements, when combined with regular exercise, may help slow biological aging by several months over a 3-year period.. Researchers analysed data ...

  9. Vitamin D receptor - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D_receptor

    The vitamin D receptor (VDR also known as the calcitriol receptor) is a member of the nuclear receptor family of transcription factors. [5] Calcitriol (the active form of vitamin D, 1,25-(OH) 2 vitamin D 3) binds to VDR, which then forms a heterodimer with the retinoid-X receptor.

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