Vitamin D May Prove Protective Against Breast Cancer
1. Meta-analyasis of 3 observational studies presented to a med conference in San Diego, CA
2. "A serum 25-hydroxyvitamin D level of 30 mg/mL or higher was associated with at least a 50% lowering of breast cancer." (Dr. Cedric Garland)
3. Study authors suggest that women should have their Vitamin D levels checked yearly
4. "We're confident that we can prevent half of the breast cancer in women in the United States, if we raise the serum vitamin D levels to 32 ng/mL."
5. To reach a level of 32 ng/mL, it would take 2,000 IU/day in New York and probably 1,000 IU/day in San Diego.
A. Not everyone is convinced of the conclusions arrived at by the study authors, "I don't care how many observational studies there are, it does not establish causality."
B. "This was a selective meta-analysis. It's not comprehensive, and there are negative studies that were not included." (Dr. Rowan Chlebowski)