It’s estimated that about 40% of the UK are vitamin D deficient during winter. This is because your main source of vitamin D is sunlight — your skin produces it when exposed to UV rays. So every year, Public Health England advises everyone to consider a 10 mcg (400 IU) daily vitamin D supplement from October to March.
Plus, with people likely spending more time indoors isolating or shielding, the government has advised that everyone should consider a vitamin D supplement during the COVID-19 pandemic.
COVID-19 aside, maintaining good vitamin D levels is important for a wide range of reasons — it’s needed for healthy bones, teeth, and muscles. And with vitamin D deficiencies increasing coming into winter, everyone should consider taking a vitamin D supplement. Bonus points if it just so happens to offer some protection against infections like COVID-19.
Lanham-New, S. A., Webb, A. R., Cashman, K. D., Buttriss, J. L., Fallowfield, J. L., Masud, T., ... & Ward, K. A. (2020). Vitamin D and SARS-CoV-2 virus/COVID-19 disease. BMJ Nutrition, Prevention & Health.
Martineau, A. R., & Forouhi, N. G. (2020). Vitamin D for COVID-19: a case to answer?. The Lancet Diabetes & Endocrinology, 8(9), 735-736.
NICE (2020). COVID-19 rapid evidence summary: vitamin D for COVID-19. Retrieved 29 September 2020 from www.nice.org.uk/advice/es28/chapter/Advisory-statement-on-likely-place-in-therapy.
WHO (2017). Vitamin D for prevention of respiratory tract infections. Retrieved 29 September 2020 from https://www.who.int/elena/titles/commentary/vitamind_pneumonia_children/en/.