Two main factors that affect infertility in men are either caused by problems making sperm or problems with the sperm's ability to reach the egg and fertilize it. In some cases, a man is born with the problems that affect his sperm. Other times, problems occur later in life because of illness or injury. Additionally some factors such as; alcohol, drugs, cigarette smoking, medicines, health problems may reduce sperm number and/or quality.
In order to understand the cause and severity of the problem, a semen analysis would show crucial parameters such as sperm volume and sperm count. However, having enough sperm cells is not sufficient. They also need to have a certain level of motility. Similarly, sperm morphology is another very important factor.
Sometimes, even if sperm production is not sufficient enough, minor surgical procedures like TESA and MESA can be used to retrieve sperm. In other cases where no sperm can be found or the quality is considerably low, donor sperm usage becomes the only alternative.
For more information please see IVF with Sperm Donation - http://goo.gl/DLRhel
www.donasyon.net
www.lowcostivf.net
www.gender-selection-ivf.co.uk
www.egg-donor-ivf.co.uk
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