To support your personal health, you'll want to get familiar with your 25(OH)D levels, which means asking your health care provider for this simple blood test 6 6. ![]() In other words, you want to exceed 30 ng/ml daily for most of your life to reap the full benefits of vitamin D for health."* In fact, a vitamin D supplement less than 20 or 30 ng/ml is associated with suboptimal bone density (not something to mess with). As Ferira expounds, "to be clear, these cut points are numbers to avoid. The National Academies recommend a cutoff of 20 ng/ml for sufficiency, while The Endocrine Society more recently vetted the science and recommended a 30 ng/ml cutoff. As mbg's vice president of scientific affairs Ashley Jordan Ferira, Ph.D., RDN, explains: "The question of daily vitamin D needs is directly informed by your vitamin D status, measured via serum 25-hydroxyvitamin D from a blood test, or for short, 25(OH)D." ![]() Vitamin D needs are more nuanced than you might think.
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