About 90 percent of all cigarettes contain trace amounts of menthol, but only mentholated varieties contain enough of the flavor for it to be noticeable.
Specifically, research indicates that mentholated cigarettes may increase the risk of lung and bronchial cancer by promoting lung permeability and diffusion of smoke particles.
However, this study shows that smoking mentholated cigarettes may place one at even higher risk for stroke than smoking regular, non-mentholated cigarettes.
