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Sufficient Vitamin D levels can prevent severity of Covid infection — Boston University study

Testing at a Mohalla clinic in New Delhi (representational image) | Photo: Suraj Singh Bisht | ThePrint

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New Delhi: Sufficient levels of Vitamin D can prevent Covid-19 patients’ condition from deteriorating and it can even reduce the need for oxygen, a study by the Boston University has shown.
“Only 9.7% of patients older than 40 years who were vitamin D sufficient succumbed to the infection compared to 20% who had a circulating level of 25(OH)D< 30 ng/ml,” the researchers at the Boston University said in an article in PLOS One.“The significant reduction in serum CRP, an inflammatory marker, along with increased Ðpercentage suggest that vitamin D sufficiency also may help modulate the immune response possibly by reducing risk for cytokine storm in response to this viral infection.” 25(OH)D or 25-hydroxyvitamin D is a measure of Vitamin D in the body. CRP or C reactive protein is commonly assayed to check the inflammation levels caused by an infection. The higher the inflammation, the greater is the infection usually. “This study provides direct evidence that vitamin D sufficiency can reduce the complications, including the cytokine storm (release of too many proteins into the blood too quickly) and ultimately death from COVID-19,” said author Michael F. Holick, PhD, MD, professor of medicine, physiology and biophysics and molecular medicine at the Boston University School of Medicine.During the study, the Vitamin D levels of 235 hospitalised Covid patients were measured. The patients were monitored regularly to see how severe the infection became, if they had difficulty breathing and whether they were finally able to overcome the disease. Their C reactive protein and lymphocyte levels were also measured.Also read: Vitamin D supplement calcifediol could reduce death risk in Covid patients, Spanish study saysVitamin D has a role in the immune response of the body Vitamin D is believed to have a role in the immune response of the body. There have been views about it playing a preventive role in Covid. “Vitamin D interacting with its receptor (VDR) in immune cells, modulates the innate and acquired immune systems in response to invasion of bacterial and viral pathogens. It also acts as a modulator of renin-angiotensin pathway and down-regulates ACE-2.. Therefore, vitamin D might help in treatment of COVID-19 by preventing the cytokine storm and subsequent ARDS which is commonly the cause of mortality,” the researchers noted. The report also suggested to explain the impact of Vitamin D in influenza cases in winter when sunny days are fewer in number. ACE2 mediates infection by the SARS-CoV2 virus. Its down regulation can, therefore, reduce the severity of the infection. Only 32.8% participants in the study had sufficient Vitamin D. “The severity of clinical outcomes from COVID-19 and mortality were reduced in patients who were vitamin D sufficient. Clinical features were also significantly different in patients who were Vitamin D sufficient. They had a lower risk of becoming unconscious and becoming hypoxic. “Patients who were Vitamin D sufficient had significantly lower blood levels of the inflammatory marker CRP and had a higher total blood lymphocyte count suggesting that Vitamin D sufficiency had improved the immune function in these patients and raising the inflammatory markers. This beneficial effect on the immune system may also reduce the risk of acquiring this insidious potentially life-threatening viral infection,” the researchers concluded. Also read: Vitamin D deficiency, speech delay, dry eyes — the impact of ‘Covid lifestyle’ on childrenSubscribe to our channels on YouTube & Telegram Why news media is in crisis & How you can fix it You are reading this because you value good, intelligent and objective journalism. We thank you for your time and your trust. You also know that the news media is facing an unprecedented crisis. It is likely that you are also hearing of the brutal layoffs and pay-cuts hitting the industry. There are many reasons why the media’s economics is broken. But a big one is that good people are not yet paying enough for good journalism. We have a newsroom filled with talented young reporters. We also have the country’s most robust editing and fact-checking team, finest news photographers and video professionals. We are building India’s most ambitious and energetic news platform. And have just turned three. At ThePrint, we invest in quality journalists. We pay them fairly. As you may have noticed, we do not flinch from spending whatever it takes to make sure our reporters reach where the story is. This comes with a sizable cost. For us to continue bringing quality journalism, we need readers like you to pay for it. If you think we deserve your support, do join us in this endeavour to strengthen fair, free, courageous and questioning journalism. Please click on the link below. Your support will define ThePrint’s future. Support Our Journalism
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