At least 200,000 deaths from heart disease and stroke can be prevented each year by quitting smoking, controlling blood pressure and cholesterol, and taking aspirin when recommended by a physician, according to the U.S. Centers for Disease Control and Prevention.

In a study published in the CDC's Morbidity and Mortality Weekly Report, researchers found that the rate of avoidable deaths from cardiovascular disease had dropped 29% from 2001 to 2010.

However, researchers found the pattern of decline differed by age, race and state of residence. They concluded that more could be done to address the problem.

"These findings are really striking. We're talking about hundreds of thousands of deaths that don't have to happen," said CDC Director Dr. Tom Frieden. "It's possible for us to make rapid and substantial progress in reducing these deaths."

In the United States, roughly 800,000 people die of heart disease and stroke each year, the report says. That's nearly 30% of all U.S. deaths, every year. (Life expectancy for the entire U.S. population is currently 78.7 years.)

Although rates of avoidable death dropped most substantially for people age 65 to 74, it remained unchanged for people under the age of 65, according to lead study author and epidemiologist Linda Schieb and her colleagues.

Also, the avoidable-death rate among blacks was nearly twice that of whites, while counties with the highest avoidable-death rates were concentrated in the nation's Southern states.

In 2010, the states with the highest avoidable-death rates were primarily in the South, including Mississippi, Oklahoma, Tennessee, Louisiana and Washington, D.C.

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