What causes infertility and how can we over vome that?

Male Infertility results from an ability to produce sufficient motile sperm for fertilization. If there are no sperm (azoospermia) or very few (oligospermia) then the couple will usually need to use Artificial Insemination or a technique like ICSI (Intracytoplasmic sperm injection) to conceive. If the sperm have defective tails or some other major abnormality then natural conception will be impossible. Most severe problems are caused by abnormal genes or chromosomes.

HOWEVER if morphology is poorer than average, motility is lower than average or the count is in the low normal range, the cause can usually be found in a lifestyle evaluation. These problems can usually be overcome relatively easily.

Total female infertility results from either tubal damage or some condition (usually genetic or chromosomal) that permanently inhibits ovulation. There could be an absence of eggs or some other developmental defect.

HOWEVER if there is difficulty getting pregnant but no tubal damage and there are cycles of some sort, whether long or irregular or low in mucus or they don't match temperature charts or you can't detect ovulation with home kits, it is VERY LIKELY that the problem can be addressed by changes in lifestyle.

Unexplained infertility is not a diagnosis. It is a lack of explanation.
Your doctor has run through all the tests and has told you that there is no obvious explanation for your problems. There does not seem to be obvious male or female infertility. Your problem seems to be without a known cause. You have been told that you have unexplained infertility. The real reason probably lies in your lifestyle or sexual practices

Unexplained infertility can frequently, but not always be overcome. It depends on the true nature of the underlying problem or problems and whether they can be addressed. In other words it depends on whether we can explain the unexplained infertility. My research and counselling experiences have shown me that there are many different issues underlying so-called unexplained infertility. Some couples have only one contributing factor but usually there are several different problems that need to be addressed simultaneously.

There are medicines which stimulate eggs, though that might work too well and give you twins or triplets sometimes.
infertility is caused due to problem in male or female genital organ
or male-sperms or due to non production of female ova.consult to u'r nearest sexologist or gynecologist.for more details for knowing the reason of infertility log on to www.google.com