Possible heart risk from calcium supplements

Older women who take calcium supplements to prevent osteoporosis may be at a greater risk for a heart attack.

Researchers at the University of Auckland in New Zealand studied more than 1,400 healthy, post-menopausal women. They found those who took calcium supplements were more likely to have a heart attack.

Researchers say the supplements may raise blood calcium levels, and accelerate the formation of deposits in the arteries, and that could lead to heart attacks.

Scientists say more research is needed.