When getting vitamin D levels tested, many shift workers show up as being ‘deficient’.
In other words, they fall short of fitting within what’s deemed to be the healthy range.
However serum vitamin D, is simply a proxy marker for sun exposure.
Clinical trials have found vitamin D supplementation provides little to any meaningful health benefits.
It’s the sunlight, along with it’s related factors, which are responsible for the beneficial effect on human health.(more…)