"Vitamin D is important to the function of the immune system and vitamin D supplements have previously been shown to lower the risk of viral respiratory tract infections," said David Meltzer, MD, PhD, Chief of Hospital Medicine at UChicago Medicine and lead author of the study.
The study, led in the UK by Professor Anthony Gordon from Imperial College London with collaborators from the Intensive Care National Audit & Research Centre, found that patients receiving intensive care who were treated with a regular fixed dose of the steroid hydrocortisone for seven days had a better chance of recovery, compared with the patients who were not treated with the steroid.