With over half of us not getting enough of the “sunshine vitamin”, we look at the tell-tale signs of deficiency and how to boost your levels. Vitamin D, the so-called “sunshine vitamin” as it’s produced in the skin during sun exposure, is one of the most important nutrients for our health, yet many of us are not getting enough of it. Blame our lengthy winters and indoorsy lifestyles, but 57% of us have lower than “optimal” levels.

It is the one food supplement the UK’s National Health Service (NHS) recommends for adults, saying we should all consider taking it during the autumn and winter months. (All children aged 4 and under are advised to supplement, too). But what are the signs that you might not be getting enough?.