An important part of being sexually active is protecting your sexual health. A lot of people’s first concerns are about unwanted pregnancies but there is another important reason to use safer sex methods: sexually transmitted infections. Sexually transmitted infections, or STIs, can cause a range of damage to the body from sores to infertility to death. Each STI has their own way of causing harm to the body and the symptoms may vary. It’s also common for many people to have a sexually transmitted infection and have no idea. Some infections do not present with any symptoms at all but they are still quietly doing damage under the radar.