research about cigarette smoking Chemicals in Cigarettes and Tobacco: What's Burning? Charted: The Decline of Cigarette

A summary of legal cases to date can be found at: Public health researchers are also looking at additional ways to limit the appeal of cigarettes by banning menthol as a flavoring additive, lowering the nicotine content of cigarettes to reduce the abuse liability of smoking, and requiring inserts inside cigarette packages that would remind smokers about the dangers of smoking and the benefits of not smoking, as well as providing information and advice on how to stop smoking

DEERFIELD, IL The Lake County Board voted Tuesday to ban the sale of cigarettes, e-cigarettes and other tobacco products to those under the age of 21

It's as simple as that

Robert Califf, in the statement