Study: calcium supplements raise heart attack risk
- From: MarilynMann <mannm@xxxxxxxxxxx>
- Date: Thu, 27 Sep 2007 13:31:16 -0700
Study: Calcium Supplements Raise Heart Attack Risk
Saturday, September 22, 2007
Wellington (dpa) - Older women have been advised to stop taking
calcium supplements - acknowledged to protect their bones - because
they raise the risk of heart attacks, according to researchers in a
New Zealand study reported Sunday.
A trial run by Auckland University's bone research group found the
supplements caused a 40-per-cent increase in heart attacks, the Sunday
Star-Times reported.
Ian Reid, the professor who directed the study, said women over 70 who
had been on the trial were recommended to stop taking extra calcium,
especially if they had a history of heart or kidney disease, pending
further investigations.
About 1,500 women took part in the trial, which was funded by New
Zealand's Health Research Council.
Reid told the paper that three other international studies on calcium
supplements had since been reviewed, and all showed varying degrees of
elevated risk of heart attacks, ranging from 10 to 20 per cent.
"When you put four studies together, you need to take it more
seriously," he said. "This is potentially very important because there
are so many people around the world who take calcium supplements."
Reid said the study found calcium supplements dramatically reduced
older women's risk of bone fractures and bone density loss. "But heart
disease kills you, whereas bone disease can, but it isn't quite so
lethal."
.
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