It just never made sense that 40 years ago, a professors at UNC School of Medicine casually announced human breast milk contained no vitamin D. “How can that be? How can that possibly be? That makes no sense,” I thought. “Was primitive man supposed to give their infants vitamin D pills that didn’t even exist?” Biomarkers: How high does your vitamin D level have to be to maximally suppress parathyroid hormone? How high does your vitamin D level have to be to maximally improve calcium absorption? How high does your vitamin D level have to be to prevent abnormal bones? The answer to these questions varies from 20 ng/ml to 40 ng/ml, depending on what study you decide to quote. But what about breast milk…
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