That’s a really important question. Most STIs are passed through sexual contact, but some like hepatitis B and C can also be spread through blood. This means sharing things like needles, syringes, straws for snorting, or even pipes can carry some risk, especially if there are cuts or blood involved. It’s safest to use your own equipment. You can find free harm reduction supplies near you using the Street Connections Map, and you can also get tested for STBBIs through your family doctor or at local clinics. Regular testing is a great way to take care of your health.