What Causes Infertility?
No one can be blamed for infertility any more than anyone is to blame for diabetes or leukemia. In rough terms, about one-third of infertility cases can be attributed to male factors, and about one-third to factors that affect women. For the remaining one-third of infertile couples, infertility is caused by a combination of problems in both partners or, in about 20 percent of cases, is unexplained.The most common male infertility factors includeazoospermia(no sperm cells are produced) andoligospermia(few sperm cells are produced). Sometimes, sperm cells are malformed or they die before they can reach the egg. In rare cases, infertility in men is caused by agenetic diseasesuch as cystic fibrosis or a chromosomal abnormality.The most common female infertility factor is anovulation disorder.
