Do alcohol or other drugs hurt your body if you only use them a couple of times?
Absolutely. Using alcohol or illegal drugs can hurt your body immediately, and using prescription drugs that aren’t for you or using prescription drugs in ways they aren’t intended to be used can do serious damage to your body.
Some drugs, like heroin and cocaine, are very addictive. That means that they tell your brain that you want to use them more and more. That can happen very quickly and the damage from using those and other drugs can happen quickly too.