Sales of all cigarettes in Massachusetts declined by up to 33% after the state instituted a ban on menthol-flavored cigarettes, an analysis published Tuesday by JAMA Internal Medicine found. "We learn from Massachusetts that a menthol flavor ban effectively reduces both menthol and overall cigarette sales," study co-author Samuel Asare told UPI in an email. "Smokers who strongly preferred these flavors needed to quit or switch to non-flavored cigarettes," said Asare, principal scientist for tobacco control research for the American Cancer Society.