World No Tobacco Day 2013: Ban tobacco advertising, promotion and sponsorship. Evidence shows that comprehensive advertising bans lead to reductions in the numbers of people starting and continuing smoking. Statistics show that banning tobacco advertising and sponsorship is one of the most cost-effective ways to reduce tobacco demand Dr. Douglas Bettcher, WHO, Director, Prevention of Noncommunicable Diseases Dr. Armando Peruga, WHO, Programme Manager, Prevention of Noncommunicable Diseases