As we tend to live most of our lives indoors, we should have our vitamin D levels tested regularly. That means to have you 25-Vitamin D levels test by a health professional or GP which can be done during a routine check up.
There is however a bit of debate about the actual levels of vitamin D that we should aim for, with figures ranging from 30 ng/ml to 80 ng/ml.
Vitamin D expert Chris Kresser believes that, after an extensive review of many studies, there is no real evidence that levels above 50 ng/ml actually deliver any real health benefit.
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