Candida naturally lives on and inside the body without causing problems.
2 Thrush develops when the balance changes, allowing the fungus to grow more than it should – usually in warm, moist areas of the body. Thrush can become more likely if:
- you have a weakened immune system
- you're taking antibiotics
- your skin is irritated or damaged
- you have poorly controlled diabetes
Thrush isn't classed as a sexually transmitted infection (STI), although it’s possible – but not very common – to pass it on during sex.2 Some antifungal creams used to treat thrush can weaken latex condoms, diaphragms and caps, so it’s best to avoid sex until your treatment has finished if you rely on these forms of contraception.2