Tobacco control is a field of international public health science, policy and practice dedicated to addressing tobacco use and thereby reducing the morbidity and mortality it causes. Since most cigarettes and cigars and hookahs contain/use tobacco, tobacco control also impacts these. E-cigarettes do not contain tobacco itself, but (often) do contain nicotine. Tobacco control is a priority area for the World Health Organization (WHO), through the Framework Convention on Tobacco Control. References to a tobacco control movement may have either positive or negative connotations.