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Study Suggests ‘Long COVID’ May Affect Millions More People Than Previously Thought


Early in the pandemic, millions of Americans who showed long COVID-like symptoms weren’t diagnosed due to testing constraints. A recent study found that 41 percent of these individuals had an immune response consistent with SARS-CoV-2 exposure, suggesting they might have had COVID-19.


Post-viral fatigue is associated with a variety of infectious diseases and is increasingly coming into focus in relation to so-called ‘long COVID’. While most people who contract the SARS-CoV-2 coronavirus can generally expect to make a full recovery, some experience symptoms lasting weeks or months after the initial infection has gone. Extreme tiredness is especially common in long COVID.

Significantly, therefore, research shows that low levels of vitamin D are associated with long COVID. Confirming this, a study recently published in the Journal of Clinical Endocrinology and Metabolism suggests that vitamin D levels should be evaluated in COVID-19 patients after hospital discharge. Previous research has shown that vitamin D supplements protect against COVID-19 related intensive care-related hospitalization and that high doses cut the risk of death from the virus by 60 percent.

To read about the use of high-dose vitamin C to treat post-viral fatigue and long COVID, see this article on our website.