Winickoff said he thinks part of the reason the change is spreading is because local town officials have seen the data from Needham. In the eight years since the age-restriction went into effect, the smoking rate for Needham high school students dropped precipitously, according to Winickoff.
The smoking rate for adults who live in Needham is 8 percent compared to 18.1 percent statewide, according to data collected by the Tobacco Control Program at the Massachusetts Department of Public Health. Deaths from lung cancer among men from Needham is 24 percent lower than the state average, while women from Needham die from lung cancer at a rate 33 percent lower than the statewide average for women, according to DPH data.
Approximately 90 percent of all smokers begin the habit before they are 21, according to anti-tobacco activists.