1. Infertility caused by sexually transmitted diseases (STD). Sexually transmitted diseases can cause the death of the sperm and impair the quality of the sperm. STD can also cause the blockage of the fallopian tube and prevent the fusion of the egg and sperm. STD can also impair the production, growth of the egg.
2. Infertility caused by uterine. Fibroids in the uterus can impair fertility by blocking the fallopian tube and disrupt the implantation of the fertilized egg.
3. Immune infertility. Some women's body, produce molecules that assist the immune system in attacking the sperms by clumping together and poking them in their membrane, this causes the sperms to lose motility.