Nearly every community in the world is involved, in some way, in the tobacco problem. In 1921 the people of the United States spent approximately $1,500,000,000 on tobacco; many persons, who feel that there is a moral principle involved in human consumption of tobacco, have joined organizations for mass attacks against the practice. In some localities legal strictures have limited the sale of the plant in any form.
A session of the International Antitobacco League was held in Prague in 1927. Recently Prof. W. E. Dixon of Cambridge University delivered, in England, the Norman Kerr lecture, on "The Tobacco Habit." In the United States, a report of the Committee to Study the Tobacco Problem has just been published in book form. Unfortunately, the reaching of helpful conclusions after reading these and other articles is difficult. Presumably the reason is that the facts are difficult to establish. Many variables confuse investigators.