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On July 29, 2010, the British Medical Journal published a flawed study of the usage of calcium supplements and associated risk of heart attack. The study misleadingly concluded that use of calcium supplements increases the risk of heart attacks by 27% and has no significant effect on overall mortality. The authors advise that the use of calcium supplements in treating or preventing osteoporosis should be reconsidered. Some in the media are broadcasting this study as a reason to stop using calcium supplements.

Please don’t stop your calcium supplements before reading more about the serious flaws in this study!

A major problem with this study is that it excluded people taking vitamin D, magnesium, and other common ingredients in bone protection products. As a result, the study participants generally had low levels of nutrients that are associated with lower risk of diseases such as atherosclerosis and cardiovascular disease and are directly tied how calcium is used in the body. These nutrients all work together to keep calcium in the bones where it belongs, rather than building up calcium deposits in the vascular system and heart that can contribute to cardiovascular disease and heart attacks.
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In May 2009, the Proceedings of the National Academy of Sciences published a small study involving 40 participants conducted by German and American researchers on the effects of antioxidant supplementation with 1000 mg/day of vitamin C and 400 IU per day of vitamin E on the impact of exercise. In particular, the study examined the impact of a combination of exercise and vitamins C and E on insulin sensitivity and other parameters of diabetic illness and as well as endogenous (body-produced) antioxidant defenses include superoxide dismutase (SOD) and glutathione peroxidase.
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