Vitamin D plays many important roles in the immune system, and some research suggests that it reduces the duration of some viral infections. The relationship between vitamin D status and COVID-19, however, is unknown.
It was a retrospective cohort study of 780 lab-confirmed cases of COVID-19 in which blood levels of vitamin D had been evaluated. Medical records prior to admission were used to determine baseline vitamin D levels.
People with vitamin D deficiency were significantly more likely to die from COVID-19. This was especially true for three subgroups: male patients, patients aged 50+, and patients with comorbidities.
People with lower vitamin D may be more susceptible to inflammation to begin with, and so more susceptible to COVID-19 complications. As the authors stressed, however, this was a preliminary study for early dissemination of results; data are subject to change. Also, this is a preprint paper; it hasn’t been peer-reviewed.
There are 7 more summaries in the Immunity & Infectious Disease category for July 2020 including ...
- A trial on anxiety reduction and sleep improvement in people with COVID-19
- A systematic review of 24 PPE studies
- Negative COVID-19 tests don’t preclude coronavirus antibodies
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