Teen cigarette smoking also fell. But underage drinking didn't improve, according to the 2004 National Survey on Drug Use and Health.
Trends for young adults (aged 18-25) included a continued drop in tobacco use and a rise in nonmedical use of some pain relievers for young adults.
The report comes from the U.S. Department of Health and Human Services. Numbers are based on a survey of about 70,000 people.
Nearly 8% of the U.S. population aged 12 and older had used illicit drugs in the past month. That's about 19 million people.
The numbers were similar in 2002 and 2003, except among teens.
Teen illicit drug use dropped about 9% from 2003. About one in 10 youths aged 12-17 used illicit drugs in 2004. That's down from 11.2% in 2003 and 11.6% in 2002. In that age group, marijuana use fell among boys to about 8% but stayed steady for girls (about 7%).
Marijuana was America's most commonly used illicit drug. More than 14 million people had used marijuana in the month before the survey (current users).
Other drugs included:
- Cocaine: 2 million current users (467,000 used crack cocaine)
- Hallucinogens: 929,000 current users
- Heroin: about 166,000 current users
Ecstasy had about 450,000 current users. That's similar to the number for 2003 but down from 2002, the survey shows.
Six million people (2.5%) currently used psychotherapeutic drugs (painkillers, tranquilizers, sedatives, and stimulants) for nonmedical reasons in 2004.
Most (nearly 4.5 million people) used pain relievers.
Nonmedical use of some pain relievers rose notably among adults aged 18 to 25.
For instance, Vicodin use was up from 15% to 16.5% and OxyContin use increased from 3.6 to 4.3% in that age group.
Tobacco use dropped in 2004, primarily from a drop in cigarette use from 26% to 25%. Still, nearly 70 million people currently used tobacco products (about a third of the population older than 12 years old), the study shows.
About a quarter of people aged 12 and older smoked cigarettes. Cigar use held steady. Smokeless tobacco use dropped from 3.3% to 3%.
- Highest rate of cigarette use: Adults aged 18-25 (39.5%)
- Cigarette use among teens dropped from 13% to 12% between 2002 and 2004.
- Cigarette smoking was more common among men 12 and older (28%) than women (22%).
- Among teens, cigarette smoking was more common among girls (12%) than boys (11%) aged 12-17.
About half of people age 12 and older drank alcohol in 2004. Many did so to excess.
- Number of drinkers: 121 million people
- Underage drinkers: Nearly 11 million people (nearly 29% of those aged 12-20)
- Highest underage drinking rate: Whites (nearly 33%)
- Lowest underage drinking rate: Asians (16%)
An estimated 55 million people admitted binge drinking in the previous month. Binge drinking is downing five or more drinks on one occasion.
More than 17 million people were heavy drinkers. That means they engaged in binge drinking on five or more days in the previous month.
Binge drinking and heavy drinking were most common among young adults (aged 18-25). In that age group, 41% binge drank and 15% were heavy drinkers, the survey shows.