Does vitamin D protect against coronavirus?

Professor Elina Hypponen

Recent headlines have suggested vitamin D deficiency could increase the risk of dying from COVID-19, and in turn, that we should consider taking vitamin D supplements to protect ourselves.

Is this all just hype, or could vitamin D really help in the fight against COVID-19?

Read more: 5 ways nutrition could help your immune system fight off the coronavirus

Vitamin D and the immune system