Evaluation of the potential association of vitamin D and risk of COVID-19 infection in the UK population

The Covid-19 pandemic continues to advance worldwide presenting different mortality rates in different countries. The variation observed in mortality and severity is still unclear. Different risk factors such as older age and comorbidities have been suggested as responsible these observed differences, however the biological pathways are still unknown. Vitamin D deficiency may be partially responsible for the covid-19 severity outcomes due to its link with acute respiratory infections observed. There is a need to explore this in a large population-based study as vitamin D supplementation is not harmful and could potentially be given to help protect the population from Covid-19.