Substance Abuse

3. a drug that slows body functioning
5. any drug that increases the body's activity
7. a medical disorder that affects the brain and changes behavior
8. cannabis, especially as smoked or consumed as a mind-altering drug
12. the process of the body getting used to a drug
14. a strong, sometimes fatal reaction to taking a large amount of a substance
15. a substance that acts by attaching to opiate receptors that stimulate pain relief, pleasure and motivation

1. physical and mental symptoms that occur when stopping or reducing intake of a drug
2. pressure a strong influence from a friend or a classmate
4. abuse any unnecessary or improper use of chemical substances for nonmedical purposes
6. the most widely used drug in the United States
9. to begin using a drug again after stopping for a while
10. substances that change a person's mental and physical state
11. any drug that decreases activity in the body
13. a highly addictive drug found in all tobacco products