Very little research has been done into its cause among adolescents and adults.

The problem among adults, particularly poor women, is much worse.

Among adults age 35+ years, over 7,600 died as a result of tobacco use per year, on average, during 2000-2004.

Now in its second season, the show has performed well among young adults.

Among adults and children aged 10 or more, the rate was even higher than before.

Among unrelated adults, the type of food seems less important.

It received a 2.7/4% share among adults between the ages of 18 and 49.

But there is still far more drug use among adolescents and young adults than 20 years ago.

The results of one study among adults with cancer have been published.

Drug use among American high school students, college, and other young adults: national trends through 1986.