What are the causes of altered sperm morphology?
Some of the common causes for abnormal sperm morphology can be enumerated as:
- Past or present infections
- Injury or trauma of the testicles
- Exposure to toxins
- Previous vasectomy or pelvic surgery
- Cancer treatment
Can an abnormal sperm fertilise? Is pregnancy possible?
Yes, theoretically speaking, the abnormally shaped sperm do have the possibility of fertilising an egg. However, given their abnormal shape, they may find it difficult to move faster and reach the egg. The eventual chance of pregnancy depends on the degree of abnormality in the sperm. For example, in spermatozoa without a head (no genetic content) or with a small or absent acrosome (necessary to penetrate the egg), fertilisation will not occur since they lack an essential part for the process.
Can abnormal sperm cause a miscarriage?
Yes. There is a possibility of miscarriage arising out of pregnancy that is caused by abnormal sperms. There is a likelihood of genetic abnormalities, making it difficult for the embryo to form and develop fully.