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While Americans' cigarette use is in steep decline, future changes in their use of marijuana and alcohol are uncertain.
Broad majorities of Americans believe the use of alcohol adversely affects society and drinkers themselves. Two-thirds of U.S. adults continue to imbibe.
Americans have become slightly less likely to say they drink alcoholic beverages, and those who imbibe are drinking less, on average.
In 1935, Americans had mixed views on the effect of Prohibition's repeal. In later years, most said they would vote against reinstating Prohibition.
Nearly half of U.S. adults say they have had drug or alcohol problems in their family. No group is spared, but college nongraduates and those in the Western U.S. appear most affected.
Highly religious Americans are less likely than others to drink alcohol and are more likely to view drinking as morally unacceptable.