The answer is yes. Invariably, almost all people will be mildly vitamin D deficient during the winter months. The ideal time to get your daily dose of vitamin D is between 11am and 3pm. During summer, you need about 20 minutes but in the winter, you may need up to one hour out under the sun to get your daily dose.

With that in mind, I believe that we should introduce a tool to monitor attendance of medical students. If you are not vitamin D deficient, then it must mean that you haven't been coming to the hospital and have been going to the beach instead!