The United States has surpassed goals for combatting heart disease, but there are warning signs that recent progress could be at risk of suffering a setback.
The American Heart Association reports in the new issue of the medical journal "Circulation" that the death rates from coronary heart disease and stroke have fallen around 30 percent. That decrease is faster and steeper than public health experts had expected to achieve.
But the same report says two-thirds of American adults still aren't exercising enough and a growing percentage of children and adolescents weigh too much.
The World Health Organization recently forecast that by 2010 cancer will overtake heart disease as the planet's number-one killer.