The Vitamin That Could Halve COVID Risk

More evidence that this vitamin protects people against severe COVID-19 infection, hospitalization, and death.

More evidence that this vitamin protects people against severe COVID-19 infection, hospitalization, and death.

A study on nearly half a million people in the UK found that UVB radiation strongly protects people against COVID-19 hospitalization and death.

The sun’s Ultraviolet B (UVB) radiation is the key for the production of 25-OHD known as calcifediol, the active form of vitamin D.

The study looked at the protective effect of ambient UVB radiation on individuals before COVID-19 infection.

The results showed that vitamin D produced in the skin from exposure to UVB radiation (vitD-UVB) was strongly and inversely associated with COVID-19 hospitalization and death.

Past studies suggest that vitamin D deficiency increases the risk of viral and bacterial respiratory infections.

During the pandemic several studies have found a strong link between vitamin D deficiency and coronavirus infection.

However, factors such as obesity, being elderly, and chronic conditions have been linked to lower levels of vitamin D and so higher severity of COVID-19.

The study shows that vitamin D status comes from both genetic predisposition and lifestyle factors.

Previous studies have failed to show the link between vitamin D and COVID-19 using genetic data.

This may be related to the fact that UVB radiation from the sunlight, which is the main source of vitamin D for most people, was overlooked.

Professor Lina Zgaga, the study’s co-author, said:

“Our study adds further evidence that vitamin D might protect against severe COVID-19 infection.

Conducting a properly designed COVID-19 randomized controlled trial of vitamin D supplementation is critical.

Until then, given that vitamin D supplements are safe and cheap, it is definitely advisable to take supplements and protect against vitamin D deficiency, particularly with winter on the horizon.”

Vitamin D is crucial for the immune system: it improves the body’s defence response against infections, helps avert respiratory infections, and reduces the need for antibiotics.

According to another study, a sufficient level of vitamin D could halve the risk of catching coronavirus and protect COVID-19 patients from the worst of the disease.

About the author

Mina Dean is a Nutritionist and Food Scientist. She holds a BSc in Human Nutrition and an MSc in Food Science.

The study was published in the journal Scientific Reports (Li et al., 2021).

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This site is all about scientific research into how the mind works.

It’s mostly written by psychologist and author, Dr Jeremy Dean.

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