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Recently, some people have stopped supplementing with calcium due to fears that calcium supplementation will increase cardiovascular disease. We recently wrote about that issue.

Is calcium supplementation a good idea? Posted on November 27, 2012 by John Cannell, MD

Other people have stopped calcium supplements due to the belief that 5,000 IU/day of vitamin D will increase dietary intestinal calcium absorption to the point that calcium supplements are not needed. This belief is in part based on Professor Robert Heaney’s work showing that calcium absorption increases when vitamin D levels go from 20 ng/ml to 32 ng/ml, with no further increase in calcium absorption with levels higher than 32 ng/ml.

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