What is a significant risk factor for contracting STIs?

The significant risk factor for contracting STIs is having multiple sexual partners. This is because each additional partner increases the likelihood of exposure to sexually transmitted infections. Engaging with multiple partners may lead to higher risk behaviors, such as inconsistent use of protection, which further elevates the chance of transmission.

In contrast, being monogamous, using barrier protection, and engaging in consistent testing each contribute to reducing the risk of STI transmission. Monogamous relationships often involve fewer sexual partners, which lowers exposure to STIs. Barrier protection, such as condoms, significantly reduces the risk of transmitting infections during sexual activity. Additionally, consistent testing allows individuals to monitor their health status, leading to earlier detection and treatment of STIs, which ultimately helps prevent further spread.