HIV is the virus that causes the disease AIDS.
AIDS is a disease that makes your body unable to fight off certain illnesses. We have medicines that can treat AIDS, but there is no cure yet. Most people just say "HIV/AIDS" when they are talking about either the virus or the disease it causes.
Drug use can put you in danger of getting HIV/AIDS.
When people are high on drugs, they don't think clearly. They might do risky things. They might have sex without using a condom to protect against HIV/AIDS, other diseases, and pregnancy. If they inject (shoot up) drugs like heroin, cocaine, or meth, they can get HIV/AIDS by sharing a needle with someone who is infected.
Doctors have learned that helping people to get off drugs also helps them avoid getting HIV/AIDS.
Visit the HIV.gov webpage to learn more about HIV/AIDS.