— But researchers say more study on the causes of the disorder is needed.
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— Study found reduced death rates from heart-related causes within 8 years.
— A single pro-smoking message can have a week-long effect, researchers say.
— And Americans continue to die from smoking-related lung cancer, experts note.
— Rehab for your lungs
— International project suggests these labels could keep millions of Americans away from cigarettes.
— Expert advice on motivation and methods to kick the habit.
— Cigarette smoking hasn't declined among young people, researchers find.
— Study of experimental treatment shows some success at six months.
— Preventive measures urgently needed to reverse this trend, researchers say.