The nation’s pediatricians are recommending wider cholesterol screening for children and more aggressive use of cholesterol-lowering drugs starting as early as the age of 8 in hopes of preventing adult heart problems.

The new guidelines were to be issued by the American Academy of Pediatrics on Monday.

The push to aggressively screen and medicate for high cholesterol in children is certain to create controversy amid a continuing debate about the use of prescription drugs in children as well as the best approaches to ward off heart disease in adults.

But proponents say there is growing evidence that the first signs of heart disease show up in childhood, and with 30 percent of the nation’s children overweight or obese, many doctors fear that a rash of early heart attacks and diabetes is on the horizon as these children grow up.

Previously, the academy had said cholesterol drugs should be considered in children older than 10 if they fail to lose weight after a 6- to 12-month effort. The academy estimated that under the current guidelines, 30 percent to 60 percent of children with high cholesterol were being missed. And for some children, cholesterol-lowering drugs, called statins, may be their best hope of lowering their risk of early heart attack, proponents said.