Doctors say diabetes raises the chances of developing heat illness, and many people with the condition do not know how to reduce their risk.
That finding comes from a Mayo Clinic survey which found that people with diabetes have an impaired ability to sweat, which predisposes them to heat-related illness.
Patients surveyed who were aware of the risks did not take medical supplies with them when they went out into a hot environment.
Experts say that if patients are not able to check their blood sugars while they are away from home, they are taking a big risk.
