Out of risk taking behavior/ adventure, peer pressure, stress.
Commonly used substances1. Alcohol2. Tobacco3. Cannabis4. Heroin5. Prescription drugs-opioids, CNS stimulants, CNS depressants
Impairment of general abilities such as senses, speed of reaction, co-ordination, thinking concentration
Increased risk taking with poor inhibitory control over behavior
Mood changes with poor control over feelings.
Consequences include increased probability of accidents & unintentional injuries, violence, suicide and risky sexual behaviors.