Lately, there’s been some suggestion that vitamin D is “fake news.” Here’s what the research has to say about that:

Analysis of vitamin D level among asymptomatic and critically ill COVID-19 patients and its correlation with inflammatory markers

Association of Vitamin D Deficiency and Treatment with COVID-19 Incidence

Covid-19 and Vitamin D Supplementation: a Multicenter Randomized Controlled Trial of High Dose Versus Standard Dose Vitamin D3 in High-risk COVID-19 Patients (CoVitTrial)

Does vitamin D deficiency increase the severity of COVID-19?

Evidence Regarding Vitamin D and Risk of COVID-19 and Its Severity

Evidence that Vitamin D Supplementation Could Reduce Risk of Influenza and COVID-19 Infections and Deaths

Low serum 25‐hydroxyvitamin D (25[OH]D) levels in patients hospitalised with COVID‐19 are associated with greater disease severity

Nutritional status of patients with COVID-19

Sixty seconds on . . . vitamin D

The role of vitamin D in the prevention of coronavirus disease 2019 infection and mortality

Vitamin D and Inflammation: Potential Implications for Severity of Covid-19

Vitamin D and the anti-viral state

Vitamin D deficiency as a predictor of poor prognosis in patients with acute respiratory failure due to COVID-19

Vitamin D in the prevention, prediction and treatment of neurodegenerative and neuroinflammatory diseases

Vitamin D insufficiency as a potential culprit in critical COVID-19 patients

Vitamin D insufficiency is prevalent in severe COVID-19

Vitamin D Levels and COVID-19 Susceptibility: Is there any Correlation?

Vitamin D Levels Associated with Covid-19 Infection Risk

Vitamin D supplementation to prevent acute respiratory tract infections: systematic review and meta-analysis of individual participant data

Vitamin D Supplementation: A Potential Approach for Coronavirus/COVID-19 Therapeutics?

Bottom Line: The findings indicate that vitamin D is a “real” option to consider these days. Find out how much you should take in Back-to-School Supplements.