High Blood Glucose May Cause Hypertension

10/01/08 Type I Diabetes or Juvenile Diabetes

People living with type 1 diabetes have another reason to maintain tight glucose control: high blood glucose levels may cause hypertension.

Researchers report in the September 22 Archives of Internal Medicine that high blood sugars appear to be one cause of hypertension, or high blood pressure, in type 1 diabetics.

The results of this research were surprising. Intensive insulin therapy—part of maintaining tight glucose control—is related to weight gain which in turn is a factor in high blood pressure. The project which was conducted over a period of nine years, demonstrated that intensive insulin therapy reduced the onset of hypertension by 24. It means there is a protective effect when glycemic (blood glucose) control is as close to non-diabetic levels as is possible for a long period of time.

A blood glucose level of 126 or lower is generally considered normal and an A1C3 of 6 is accepted as a healthy target. Many people with type 1 diabetes seem to average higher glucose levels and A1C scores than that and most endocrinologists are satisfied with an A1C of 7. However, this research identifies a need for low scores to stave off hypertension.

If you have a hard time with glucose control, have a talk with your endocrinologist about changing the kind of insulin you use or going to a pump. This study had patients on three daily doses or an insulin pump which afforded more flexibility and control than once-daily dosing. Sometimes there is a price to pay for convenience. Insulin users already know the real pain with insulin injections is not from the needle, but rather having to interrupt your activities in order to use the syringe. However, a minor inconvenience like insulin may help prevent a larger one like hypertension.