Study Links Massachusetts Ban on Workplace Smoking to Decline in Fatal Heart Attacks

A new study has found that fatal heart attacks in Massachusetts declined by 7.4 percent following the state’s 2004 ban on smoking in the workplace.

The study, which will appear in the November edition of the American Journal of Public Health, concludes that workplace smoking prohibitions prevent roughly 270 fatal heart attacks each year in Massachusetts. The statewide ban’s positive effects started slowly the first year the new law was in place, but picked up after that.

Some communities in Massachusetts had workplace smoking bans even before the statewide restriction was adopted. Although those communities saw their fatal heart attacks decrease after 2004, the decline has been much sharper in areas that didn’t have workplace smoking bans before — providing evidence that the new statewide prohibition was pivotal in improving public health.

“These results suggest that smoke-free air laws are working,” study co-author Melanie Dove told the Health Behavior News Service. Dove worked on the study with colleagues at the Harvard School of Public Health, along with Massachusetts public health officials, but she has since moved to the University of California at Irvine.

The study came under criticism from some experts who faulted it for not comparing Massachusetts with neighboring states. “We don’t know what the decline would have been with the absence of the state smoking ban,” said Dr. Michael Siegel of the Boston University School of Public Health.

He said the lower heart attack death rate “could have had to do with better treatments, increased rate of statin drug use, advanced techniques for heart disease control. That’s the biggest limitation of the study, and because of that the conclusions have to be viewed with great caution.”

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