Most people in Belgium are deficient in vitamin D, but is it worthwhile taking supplements? | VRT NWS: news

During the winter months around 90% of people in Belgium are deficient in vitamin D due to a lack of exposure to sunlight. Nevertheless, experts say that it is not necessary for us all to start taking vitamin D supplements en masse. What can you best do if you are found to be deficient in vitamin D and is vitamin D deficiency really such a problem anyway?