Designs for Health Aus - Are you deficient in Vitamin D? . We all know Vitamin D plays a critical role for bone health, muscle health, immune system maintenance, and maternal health.
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Vitamin D and COVID-19: evidence and recommendations for supplementation | Royal Society Open Science
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Dr. Joseph Mercola: 'Vitamin D deficiency may be a major cause of influenza', Called 'Charlatan' on Twitter - Outbreak News Today
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Frontiers | A Basic Review of the Preliminary Evidence That COVID-19 Risk and Severity Is Increased in Vitamin D Deficiency
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Vitamin D supplements 'the key to beating colds and flu', study finds | The Independent | The Independent
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