The ridiculous recommendation by the Institute of Medicine that only 600iu of vitamin D is indicated for prevention of disease has been rebuked by another study. Katherine Crew was the lead investigator at Columbia University for a study that showed that females with vitamin D levels less than 20 mg/ml had a 40% higher risk of developing breast cancer than those with levels greater than 50. Oral doses up to 10,000 iu a day were proven safe to use in patients with low levels. Vitamin D testing should be routine. I like to see optimal levels at 60 iu or higher.
See www.holisticprimarycare.net (click here), editor Erik Goldman’s blog.
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