Soaring temperatures, mixed with high humidity, are increasing the risk of heat illness, especially among children.

“Untreated diabetes, especially Type II diabetes, may also increase the risk of atherosclerosis or thickening of the blood vessels and this can also impede perfusion to the brain,” says Dr. Damon Salzman, a neurologist with Cleveland Clinic Weston.

In this undated photo courtesy of the Heath family, Matthew Heath is seen at his mother's home in Knoxville, Tennessee. (Heath family via AP)MEDELLIN – “Don’t WORRY!,” reads the cryptic note scribbled on a scrap of perforated paper smuggled out of a dank, basement cellblock. Now, for the first time, Heath’s family in Knoxville, Tennessee is breaking its silence. Like Heath's family, he believes the American innocently entered Venezuela in the hopes of catching up with his boat. Heath’s family doesn’t know what led him to cross into Venezuela.