For Diabetes: BP, Cholesterol Key v. Heart Disease
Jan. 28, 2013 -- People with
diabetes who want to lower their risk of heart attack and stroke should focus on controlling their blood pressure and ''bad'' cholesterol, according to a new study of more than 26,000 patients.
Controlling both these risk factors, the researchers found, made patients less likely to be hospitalized for
heart attacks or strokes than those who only controlled blood sugar during the six-year follow-up.
"It's not that
blood glucose is not important. It's that low-density cholesterol and blood pressure control are more important if cardiovascular disease is what you are trying to prevent," says Gregory A. Nichols, PhD, a senior investigator at Kaiser Permanente Center for Health Research.
The study is published in the
Journal of General Internal Medicine.
Diabetes & Heart Disease: Study Details
More than 18 million people in the U.S. have
diabetes, according to the American Diabetes Association.
type 2 diabetes (in which the body doesn't make enough insulin or use it properly) have a higher risk of heart disease and stroke.
To minimize the risk, research suggests, those with diabetes should control not only blood sugar levels but also their
LDL or ''bad" cholesterol and their blood pressure.
However, Nichols says, he is not aware of any study that looked at the contribution of these risk factors to
heart attack or stroke risk among people with diabetes.
For the new study, the researchers calculated all patients' average values on systolic blood pressure (the upper number of the reading), cholesterol, and blood sugar levels.
"There were actually eight different possible categories," Nichols says. These ranged from having none of the risk factors under control to having all of them under control.
Guidelines suggest that systolic
blood pressure in those with type 2 diabetes should be less than 130.
LDL ideally is less than 100 [mg/dL] and A1c [a blood sugar measure] is less than 7%," Nichols says.
Next, they looked at whether the patients had a hospital admission with a diagnosis of
heart disease or stroke. During the study, 1,943 patients were hospitalized for those reasons.
Those who were in the hospital were on average 65 years old. Those who were not were on average 58.
Nichols looked at the risk factor status of all patients.