White lies about sexual activity range from claiming to have only one sexual partner to failing to admit to having unprotected sex. When doctors are not aware of a patient's sexual history, they may not be as vigilant about assessing the patient for sexually transmitted infections that could lead to serious health consequences if left untreated. Some sexually transmitted infections, such as HIV, can take months before they produce noticeable symptoms. It is important for doctors to be aware of their patients' sexual history so they can use it to identify which patients should be monitored and tested for HIV and other sexually transmitted infections. In addition, such sexually transmitted infections as gonorrhoea and chlamydia can increase the risk of an unhealthy pregnancy and create medical issues for an unborn baby. If doctors are familiar with the sexual history of their patients, it is easier for them to properly monitor and test patients who become pregnant.