Tubal-peritoneal factor- Violation of the patency of the fallopian tubes leads to the fact that the egg cannot penetrate the uterine cavity. In this case, you can elther try to restore patency using a surgical laparoscopic operation or perform IVF and Implant an already developing embryo into the uterine cavity. Male factor- This diagnosis is made when the quality of sperm is not high enough. If the number of healthy active sperm is too low to conceive a healthy child, it is better to resort to ART treatments like IVF, IUI, ICSI, etc. Endometriosis - Mild forms of endometriosis usually respond to surgery and hormonal treatment. If, after the therapy, pregnancy does not occur, then the doctor sends the couple for an IVF procedure. Age-related infertility- Age plays a vital role when we talk about deciding the right time for IVF. With this factor of infertility, it is better to supplement the standard IVF procedure with ICSI and assisted hatching methods. Anovulation- Anovulation is usually treated with simpler methods, such as hormonal stimulation combined with IUI. But if it's unsuccessful, you can always use the IVF method. Unexplained infertility - If it is not possible to establish an accurate diagnosis, and the therapy is unsuccessful, then the doctor may advise the couple to resort to the IVF procedure.