A new study finds that Canada's ban on menthol cigarettes seemed to drive more smokers to quit, with overall cigarette sales dipping after the law took hold.

Researchers found that after menthol ban went into effect, sales of those cigarettes took an unsurprising plunge. But there was also a reduction in overall cigarette sales, of just under 5%.

The findings suggest that the ban is having its intended effect, said lead researcher Michael Chaiton, of the Ontario Tobacco Research Unit and the University of Toronto.