The cigarette smoking rate among US adults dropped to another all-time low last year, with one in 11 adults saying they were current smokers, according to government survey data released this week.Cigarette smoking is a risk factor for lung cancer, heart disease and stroke, and has long been considered the leading cause of preventable death.

The cigarette smoking rate among U.S. adults dropped to another all-time low last year. A government survey shows that about 1 in 11 adults said they were current smokers.

In the mid-1960s, 42% of U.S. adults were smokers.