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Is vitamin D3 more effective than D2?
date:May 08, 2012
nded dose are still hotly debated.
Several studies have reported that the D3 form of the vitamin is more potent that D2, with a study led by Robert Heaney, MD, from Creighton University in Nebraska reporting earlier this year that D3 was 87% more potent than D2 (Journal of Clinical Endocrinology Metabolism, doi: 10.1210/jc.2010-2230).




However, a study led by Michael Holick, PhD, MD, from Boston University and published in theAmerican Journal of Clinical Nutritionindicated that fortification

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