This comprehensive chart from the San Francisco City Clinic gives an in-depth analysis of sexual behaviors and their associated risks. Scroll down to see all behaviors. To read more about an STD, click its name. To get back to the chart, click STD Risks Chart in the sidebar.

Using Drugs

• People use drugs for a variety of reasons.


• Using any drug in a manner not prescribed by a doctor is considered illicit drug use.


• Illicit drug use can lead to substance abuse and addiction.


• Illicit drug use impairs your judgment and generally puts you at higher risk for infection from HIV and STDs.


• Illicit drug use is often illegal and puts you at risk for monetary fines and jail time.

If you choose to use:

• Try to find a warm, safe environment.


• Know where your drugs come from.


• Look, smell, and taste. Know exactly what you’re using.

If you shoot up:

• Don’t share needles and use clean works. Sharing needles puts you at the highest risk for HIV infection.


• Rotate injection sites to reduce the risk of a collapsed vein.

If you smoke:

• Use chapstick or Vaseline to reduce cracking and burning of lips.


• Avoid sharing pipes. Sharing a pipe with a person who has open sores or lesions on their mouth can lead to the spread of STDs including HIV.

If you’re a gay/bi man who uses meth:

• You might find useful info at GMHC’s MyMethLife.org

If you need help quitting, try:

• 1-800-662-HELP


• Substance Abuse Treatment Facility Locator


• Narcotics Anonymous Meeting List


• Alcoholics Anonymous Meeting Finder