Vitamin D is often referenced as the sunshine vitamin since the vitamin’s primary source is attained through sun exposure. Yet, many people are vitamin D deficient. Vitamin D is a fat-soluble hormone that plays a critical role in bone health, muscle function, adaptive immunity, and many human diseases like cancer, diabetes, and musculoskeletal health. 2 Vitamin D Deficiency In fact, vitamin D deficiency is a global public health issue. About 1 billion people worldwide have vitamin D deficiency, while over 77% of the general population is insufficient.1 So, what does that mean if you are an athlete who plays an…
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