11 marzo 2015
Cigarette use among white teenagers is substantially higher than among black and Hispanic teenagers, especially at 18 years old, according to researchers. Alcohol and marijuana use are also higher in white teenagers, and the numbers continue to increase until age 20. Throughout their 20s, blacks and Hispanics are more likely to pick up a cigarette-smoking habit, while the numbers start to decrease for whites.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/eEvJ2uZ0dzw/150311124741.htm
