By the way, doctor: Calcium supplements and heart attack risk
This study was one of these secondary analyses. The conclusion was that the women assigned to take calcium supplements were more likely to have heart attacks, strokes, or sudden death compared with those who took a placebo. How much more likely? By one count, 47% more, although when information from a hospital database was added in, the figure dropped to 21%. Because randomized trials are the gold standard for assessing a treatment, these results got a lot of attention.
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