Methamphetamine impairs the ability and the desire to be safe which could lead to riskier activity and behaviors, not just sexually but in general.
Opiates affect the limbic system, which controls emotions which can produce feelings of pleasure, relaxation, and contentment.
Vicodin overdoses can occur for a variety of reasons and under different circumstances, such as someone taking too much Vicodin accidentally because they are not getting pain relief from their normal dose.
Members of fraternities and sororities tend to consume more alcohol than students who do not participate in the Greek system.