How Vitamin D Supplements Can Support Your Fitness Goals*



According to nutrition musculoskeletal scientist Christian Wright, Ph.D., there is one caveat to the research surrounding muscle health. “Overall, the majority of data suggests vitamin D supplementation is beneficial for muscle function, mass, and metabolism—if vitamin D status is low or deficient,”* says Wright. “After vitamin D status is sufficient, however, there appears to be little to no clinically significant benefit of additional vitamin D supplementation.” 

“Since almost half of the U.S. population is not vitamin D sufficient and many of us are yo-yo’ing in and out of sufficiency, challenge accepted,” says Ashley Jordan Ferira, Ph.D., RDN, mbg’s director of scientific affairs. As a reminder, your serum total 25-hydroxyvitamin D (25(OH)D) is measured with a blood test, and anything above 30 ng/ml is considered “sufficient.” 



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