Researchers are of the opinion that a large percentage of divorces worldwide are due to the lack of honesty before marriage. For this reason, it is advisable to do all the necessary medical tests before taking this important step in life. This can help partners build stronger trust with each other, experts say. Premarital medical tests include: general medical tests – ultrasound, X-rays, laboratory tests, etc.; tests for the presence of sexually transmitted infections (STIs); checking the possibility of conception (TORCH-complex); fertility tests; genetic tests. The tests can help prevent a possible divorce if the couple finds out in advance that they cannot have children. Such a problem can cause a breakdown in the relationship between partners. Having prior clarity about reproductive issues can reduce the risk to the relationship in this aspect. The given information can help to think about an appropriate solution. NEWS_MORE_BOX Similar are the problems related to impotence. Tests can indicate incipient erectile dysfunction, which requires taking the necessary measures before it deepens. Thanks to the tests, the presence of infection with some sexually transmitted diseases that seriously harm reproductive health can be detected. With the timely initiation of treatment, conditions such as ectopic pregnancy, blockage of the fallopian tubes, spontaneous abortion, risks to the health of the future baby can be avoided. Most such cases of infection occur without the appearance of symptoms, due to which the high rate of complications is also due. An example of such an infection is toxoplasmosis, which is caused by the single-celled parasite Toxoplasma gondii.