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  too little sperm in an ejaculation might make it more difficult to get pregnant because there are fewer candidates available to fertilize the egg.   sperm transport disorder (10-20) unknown causes (40-50) much research remains to be performed on the topic of male infertility, as many cases still receive an unknown cause diagnosis. Male infertility usually occurs because of sperm that is abnormal, because of inadequate numbers of sperm, or problems with ejaculation. These medications may impact sperm production and sperm count. Steroids, such as prednisone and cortisone, which are used to treat asthma, arthritis and skin conditions, impact male fertility. Chemotherapy and radiation could cause sterility or a significant change in sperm quality and quantity. Azoospermia is a condition of male infertility that can result in serious problems with regard to sperm production and transfer. Because azoospermia inhibits sperm from entering the ejaculate, it can pose serious consequences for sperm health and for a couples chances of getting pregnant.   according to studies, age causes a decline in semen volume and sperm motilitytwo key factors in male fertility. Men over 35 are about half as fertile as men under 25, and on average it takes men over 40 two years to get their partner pregnant while men under 25 take just 4. Male fertility and conception- tips for getting pregnant by improving sperm health male fertility is vital for conception and a healthy pregnancy. Couples trying to get pregnant need to pay attention to factors which increase the chances of infertility in men. There has been some debate over how frequently a couple should have sex when trying to conceive. It was once thought that abstaining from sex for a few days before ovulation helped build up a mans sperm count, improving the chances of conceiving.

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