Male condoms are a major contraceptive method that provide effective barrier protection against sexually transmitted infections (STIs), including HIV. They work by preventing direct skin-to-skin and fluid-to-fluid contact during intercourse, significantly reducing the risk of transmission of pathogens. This dual function as both contraception and STI prevention makes them unique among contraceptive methods. Unlike permanent contraception or hormonal methods, condoms actively protect against infections with consistent and correct use. This is why their use is highly recommended in situations where STI risk is a concern.

Reference: Contraceptive Technology, Hatcher et al., 21st Edition.