1 in 5 U pharmaciecambier.com/sildenafil-generique.html .S. Adults used tobacco in 2015: government study CHICAGO – A single in five adults in america was using some type of cigarette in 2015, on Thursday night from the U according to country wide study data released.S. Centers for Disease Avoidance and Control. FILE PHOTO: Smoke cigarettes rises from a burning up cigarette in Bordeaux, France, 19 september, 2017. REUTERS/Regis DuvignauThe survey, carried out with the Medication and Meals Administration, discovered 21 % of U.S. Adults, or 49 million people, had been tobacco users.