Not many things in life are 100% guaranteed, but these tips for avoiding STIs are.

	1. Do not share needles or syringes with another person.
	2. Do not have any kind of sex with another person.
	3. Have sex only with a long-term, monogamous partner who is not infected. (The only way to know for sure that someone is not infected is for that person to be tested at a health clinic or doctor’s office.)

While these tips are 100% effective at preventing the transmission of STIs, they can be difficult for people to follow consistently. So what are the next most effective things people can do to stay healthy? Find out on the next page.