because of the presence of nicotine.
Among adults in the United States who have ever smoked daily, 91.3% tried their first cigarette
and 77.0% became daily smokers before age 20 years.
More than 90% of young people (ages 10-22 years) who use tobacco daily
experienced at least one symptom of nicotine withdrawal when they tried to quit.
Approximately three quarters of young people (ages 10-22 years) who use
tobacco daily report that they use it because "it's really hard to quit."
Reasons for Tobacco Use and Symptoms of Nicotine Withdrawal Among Adolescent
and Young Adult Tobacco Users: United States, 1993
70% of 12-18 year olds who were past-month smokers felt they needed cigarettes
or were dependent on cigarettes.
CDC. Preventing Tobacco Use Among Young People
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