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  2. 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 ...

  3. Experts Say This Is Real Difference Between Vitamin D and D3

    www.aol.com/experts-real-difference-between...

    Both vitamin D2 and vitamin D3 will help to increase vitamin D levels in the blood, says Pelitera. However, some studies have shown that supplementing vitamin D3 does a little bit better of a job ...

  4. Vitamin D - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D

    Unlike the other twelve vitamins, vitamin D is only conditionally essential - in a preindustrial society people had adequate exposure to sunlight and the vitamin was a hormone, as the primary natural source of vitamin D was the synthesis of cholecalciferol in the lower layers of the skin's epidermis, triggered by a photochemical reaction with ...

  5. How to get the most out of vitamin D3 - AOL

    www.aol.com/news/most-vitamin-d3-020914344.html

    Vitamin D3, aka cholecalciferol, is important for bone health and immune function. Experts discuss benefits, sources, risks and who needs a supplement. How to get the most out of vitamin D3

  6. Cholecalciferol - Wikipedia

    en.wikipedia.org/wiki/Cholecalciferol

    The Institute of Medicine in 2010 recommended a maximum uptake of vitamin D of 4000 IU/d, finding that the dose for lowest observed adverse effect level is 40,000 IU daily for at least 12 weeks, [25] and that there was a single case of toxicity above 10 000 IU after more than seven years of daily intake; this case of toxicity occurred in ...

  7. Vitamin D and Omega-3 Trial - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D_and_Omega-3_Trial

    The studied aimed to enroll 20,000 participants (women 55 or over, men 50 or over) [3] [4] who were randomized into one of four groups: [5] daily vitamin D (2000 IU) and fish oil (1 g); daily vitamin D and fish-oil placebo; daily vitamin-D placebo and fish oil; daily vitamin-D placebo and fish-oil placebo.