For those confused by the choice of supplements and minerals, here is our regular guide to the essentials you need to know about.

What is it?

A fat-soluble vitamin that the human body makes in the skin in response to UV light, but is also available from food (but in limited concentrations).

What does it do?

Complements both calcium and phosphorous levels which in turn helps maintain bone density. But it also has important roles within the immune system as it helps stimulate the body’s basic immune responses as well as offering a degree of protection against some forms of cancer, especially breast cancer.

How do I know if I need it?

Unlike most other supplements, you probably do as on average we only get 45% of the amount of vitamin D that we should be getting.

How should I take it

No more than 1100iu daily (in this case more is not better) and look for vitamin D in the form of D3 (check the labels).

Your Comments (2)

  1. Wenche wrote on May 12th, 2013 ...

    Wenche on May 12th, 2013 at 10:58 am

    How much is 1100 iu in mg?

  2. Team wrote on May 16th, 2013 ... Team on May 16th, 2013 at 12:37 pm

    IU means International Units, therefore there is single conversion to help determine how many iu’s are in mg’s.
    To determine this, you would need to measure each vitamin individually to work out the mg.

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