A lot of people take calcium supplements. Many doctors recommend them, especially to women to help build strong bones.
But researchers followed nearly 24-thousand German men and women between the ages of 35 and 64.
Some were taking supplemetns, while others got their calcium largely through their diets.
After following the volunteers for 11 years, there were 354 heart attacks, 260 strokes, and 267 deaths from cardiovascular causes.
Researchers say those who took calcium supplements regularly were more likely to have a heart attack than those who did not take them.
More studies are needed, and if you are taking a calcium supplement, you should not stop. But do talk to your doctor about what is best for you, based on your risks.
Dr. David Shipon, a preventative cardiologist at the Heart Center of Philadelphia with Thomas Jefferson University Hospital, says although this is a large study, more research is needed on the issue.
He advises patients to talk with their doctors about their risks. In some cases, people may be at a greater risk for bone fracture than for heart disease and in that case, they may need to take some supplements. For others, taking a Calcium supplement may contribute to heart problems and it may not be the best option for them.
He says if you currently take a Calcium supplement, don't stop. But call your doctor to discuss this study and how it pertains to your health. He also says a well-balanced diet is always recommended.
Good sources of calcium include:
* a cup of yogurt
* a slice of cheese
* a glass of milk
Some non-dairy options for calcium are:
* Tofu
* Fortified orange juice
* Collard greens or spinach
* Salmon or sardines
