Does vitamin D play a role in preventing or reducing the severity of Covid-19 infection? Researchers are currently exploring this path.

The interest of vitamin D against Covid-19 is not new. An American study showed, last May, that patients with Covid-19 deficient in vitamin D are twice as likely to develop a severe form of the disease as others. The National Academy of Medicine went in the same direction by affirming, in a press release published on May 23, that vitamin D regulates the inflammation caused by SARS-CoV-2. “It plays a role in the regulation and suppression of the inflammatory cytokine response that causes the acute respiratory distress syndrome which characterizes severe and often lethal forms of Covid-19,” she wrote.

A definitive answer to the effect of vitamin D against Covid-19

In England, researchers at Queen Mary University in London are launching a clinical trial to study the effect of vitamin D on the immune system against Covid-19.

They recruit patients who are deficient in vitamin D (a blood test will be carried out to confirm this) and who will be able to take daily, and for six months, vitamin D. The doses which will be prescribed to the volunteers will be higher than the regular supplements.

Principal investigator of this study, David Jolliffe said, “The trial has the potential to give a definitive answer” to the question of whether vitamin D offers protection against Covid-19 ”.

Vitamin D is recommended in winter to compensate for the absence of sun. Vitamin D deficiency is more common in the elderly and those who are overweight who are all at increased risk of developing a severe form of Covid-19 infection. “Vitamin D supplements are inexpensive, low risk and widely available; if they are proven effective, they could significantly contribute to our global fight against the virus”, argued the researcher.

A Spanish study recently argued for the benefit of vitamin D against Covid-19. 50 patients received the supplement and the results showed that only one of these 50 patients had been transferred to intensive care and that no deaths had been reported. Of the 26 who did not receive this treatment, half had been referred to intensive care.

In addition, a statistical analysis of data obtained in hospitals around the world revealed that vitamin D can reduce the number of severe cases in patients infected with the virus by 15%.