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Diabetes Increases Heart Attack Risk

Findings Point Out Need to Aggressively Treat Cardiovascular Risk Factors, Researchers Say
By
WebMD Health News
Reviewed by Louise Chang, MD

March 31, 2008 -- Adults being treated for diabetes are just as likely to have a heart attack or stroke or die from cardiovascular causes as people who have had a prior heart attack, new research shows.

They are also twice as likely as non-diabetics to die following a heart attack, the study revealed.

Researchers say the population study confirms the importance of treating cardiovascular risk factors as aggressively as diabetes in adults with type 1 or type 2 disease.

"Adults who need glucose-lowering drugs are at very high risk for heart attacks and strokes, and they need to be monitored closely for this and treated with appropriate medications," study researcher Tina Ken Schramm, MD, tells WebMD.

Diabetes and Heart Risk

By examining Danish population registries, Schramm and colleagues from Denmark's Gentofte University Hospital followed 3.3 million adults over the age of 30 for five years between 1997 and 2002, including 71,801 people with diabetes and 79,575 who had had a previous heart attack.

Because of the comprehensive nature of the Danish registries, the researchers were able to identify and include all patients in the country with diabetes who were being treated with blood sugar-lowering drugs.

Patients being treated for diabetes had a cardiovascular risk comparable to patients without diabetes who had experienced a previous heart attack.

And compared with people without diabetes or a previous heart attack, the risk of having a heart attack was 11 times greater for women and seven times greater for men with both diabetes and a prior heart attack, Schramm tells WebMD.

"The increased risk was observed at all ages with either type 1 or type 2 diabetes who were receiving insulin or other drugs to reduce levels of sugar in the blood," Schramm notes. "When people with diabetes do have heart attacks, they are twice as likely to die as nondiabetics."

Drugs and Lifestyle Changes

Schramm says patients on insulin or those taking drugs to control their blood sugar should talk to their doctor about also taking low-dose aspirin for their heart, and their blood pressure and cholesterol should be monitored closely and treated aggressively.

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