Swiss adolescents, aged 16 to 17 years, were asked about their past dr
ug use, their intended drug use, their optimism about their future hea
lth, their negative emotions, and their well-being. On the basis of th
eir self-reports, they were divided into 3 types of drug users: nonuse
rs, experimenters, and frequent users. Compared with nonusers, experim
enters and frequent users reported low optimism and more negative feel
ings. Females reported more negative feelings and less psychological w
ell-being than did males, but the genders did not differ regarding opt
imism. Logistic regression demonstrated that optimism about future hea
lth was a protective factor for the intention to use drugs. Students w
ho perceived themselves as less vulnerable to harm had in the past not
used drugs and intended not to accept drugs when given the occasion.
The implications of the findings for prevention of drug use are discus
sed.