A medical problem with your penis or testicles can be a sign of a potentially severe health condition that can affect many aspects of your life, such as your self-confidence and even your relationships. But not everything is quite so serious. If your sole strategy to keep your genitals healthy is to avoid contracting a sexually transmitted infection (STI), keep in mind there are other issues to be aware of.
Keeping your penis and testicles healthy goes beyond regular screenings for STIs, because there are health conditions outside of STIs that can affect genital health. You should also examine your lifestyle and hygiene habits, and identify any existing underlying medical issues.