Calcium Supplements Linked to Increased Risk of Heart Attack

http://www.sciencedaily.com/releases/2010/07/100729191154.htm

ScienceDaily (July 30, 2010) — Calcium supplements, commonly taken by older people for osteoporosis, are associated with an increased risk of a heart attack, finds a study published online in the British Medical Journal.

----- (skipping)

To further investigate this important issue, an international team of researchers analysed the results of 11 randomised controlled trials of calcium supplements (without co-administered vitamin D) involving 12,000 patients.

They found that calcium supplements were associated with about a 30% increased risk of heart attack and smaller, non-significant, increases in the risk of stroke and mortality.

Previous studies have found no increased cardiovascular risks with higher dietary calcium intake, suggesting that the risks are restricted to supplements.


..