Despite health effects , bans and social pressure , 20 percent Americans smoke . About 90 percent of adult smokers start in high school . Comment: None of my friends smoke , and I 'm very uncomfortable doing it anywhere near them . '' iReport.com : Do you still smoke ? Share your story .
Despite health effects , bans and social pressure , 20 percent Americans smoke . About 90 percent of adult smokers start in high school . Comment: iReport.com : Do you still smoke ? Share your story .