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Heart function and circulation apparently changes for the worse in people with Type 2 diabetes as early as adolescence. This bad news for diabetic teens was reported in a new study presented Sunday at The Endocrine Society’s 93rd Annual Meeting in Boston. Earlier studies in adults with Type 2 diabetes show that their heart and blood vessels’ ability to handle exercise may be impaired. The new research finds that these changes in heart function may begin to happen almost as soon as Type 2 diabetes occurs.
At the University of Auckland in New Zealand, researchers studied how the heart and blood vessels of 13 teenagers with Type 2 diabetes adapted to exercise. The scans compared the diabetic teens with 27 overweight or obese teens who did not have diabetes and 19 nondiabetic and nonobese healthy teens.
Images of the heart showed that the hearts of subjects with Type 2 diabetes did not expand and fill up with blood between heartbeats as well as the hearts of subjects in the other two groups. The teen’s heart’s pumping function was strong, but their hearts were not filling as well as normal between beats. We refer to this as diastolic dysfunction. It is not a good sign. With diabetes, the heart can become stiffer, limiting its ability to stretch and expand. Heart disease is the most common cause of death in people with diabetes.
Images also showed that in the femoral artery the flow of blood through the artery was significantly less in the diabetic group during exercise compared with the other two groups.
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