Male factor infertility refers to the failure of a couple to achieve conception due to problems specifically related to the man’s sperm, seminal fluid or reproductive organs. A number of things can affect sperm count, ability to move (motility) or ability to fertilize the egg. The most common causes of male infertility include:
- Abnormal sperm production or function.
- Problems with the delivery of sperm due to sexual problems, such as erectile dysfunction, premature ejaculation, ejaculatory incompetence , retrograde ejaculation; or blockage of the part of the testicle that contains sperm (epididymis) or scarring from genital infections.
- General health and lifestyle issues such as poor nutrition, obesity, stress or use of alcohol, tobacco and drugs.
- Over-exposure to certain environmental hazards and toxins, such as pesticides, lead, paint, radiation, radioactive substances, mercury, benzene, boron, and heavy metals.
- Ageing male – Men older than age 40 may be less fertile than younger men.