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Vitamin D-Deficiency and Covid

In science and medicine, information is constantly changing and may become out-of-date as new data emerge. All articles and interviews are informational only, should never be considered medical advice, and should never be acted on without review with your health care team.

The chances are strong that you are Vitamin D deficient. If you are, you’re not alone. Vitamin D deficiency is a significant public health problem worldwide, irrespective of geography. The negative implications of vitamin D deficiency have been reaffirmed in a just-published study out of Israel, which evaluated over 1,100 hospitalized patients for COVID-19. Results from the study show what’s long been suspected: insufficient levels of this most important of all the fat-soluble vitamins are at significantly increased risk for contracting SARS-CoV-2. In this study, patients with vitamin D deficiency (<20 ng/mL) were 14 times more likely to have severe or critical disease than patients with 25(OH)D ≥40 ng/mL Mortality among this group of patients with low levels was 25% as compared to just 2.3% among patients with normal levels of Vitamin D.

Most labs indicate the standard normal range of Vitamin D between 30.0 – 100.0 ng/mL., which is arguably conservative. A simple blood test can screen for Vitamin D insufficiency. Vitamin D plays a vital role in modulating the immune system. Thus it is essential for the immunocompromised, including those of us with chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL / SLL), to have their Vitamin D level checked and, if necessary, boost levels through nutritional supplementation.

This is one easy move to improve our odds with COVID.

Here is the original article: Pre-infection 25-hydroxyvitamin D3 levels and association with severity of COVID-19 illness.

Stephen Feldman

CLL Society Senior Support Group Advisor