Addiction Say: uh-dik-shun An addiction is an urge to do something that is hard to control or stop. If you use cigarettes, alcohol, or drugs like marijuana (weed), cocaine, and heroin, you could become addicted to them. They can really hurt you and could even kill you. Back to Articles Related Articles Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.