Caution: Cigarette Smoking May be Hazardous to Your Health

As of January 1, 1966, all cigarette packages in the United States must carry a warning message to smokers. The Cigarette Labeling and Advertising Act of 1965 required the following health warning, prescribed by Congress, to be placed on all cigarette packages sold in the United States:

CAUTION: CIGARETTE SMOKING MAY BE HAZARDOUS TO YOUR HEALTH.

This warning appeared on cigarette packs from January 1, 1966, through October 31, 1970.