why a father can't reproduce??? If anyone know the ans then tell me fast guys..
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Answer:
Infertility and Reproduction Reference
Infertility and Men
Although some people still think of fertility as a "woman's problem," in 20% of infertile couples, the problem is solely with the male partner. Infertility in a man may be the only reason that a couple can't conceive, or it may simply add to the difficulties caused by infertility in his partner.
So it's crucial that men get tested for fertility as well as women. It's also important that men do it early. Though some guys may want to put off being tested -- possibly to avoid embarrassment -- early testing can spare their partners a great deal of unnecessary discomfort and expense. It's also a good way to quickly narrow down potential problems.
Getting Tested for Infertility
The first thing to do for fertility issues is to go to the doctor, typically a urologist. After a physical exam, your doctor will probably order a semen analysis, which will check the quality and quantity of the sperm in the semen. And yes, your doctor will want you to give the sample there, or at least someplace nearby, because it's important that the analysis takes place quickly. Just remember, as sheepish as you might feel, a semen analysis is a common test, and the results could save you months of worry and stress.
If the first semen analysis is normal, your doctor may order a second test to confirm the results. Two normal tests usually are interpreted to mean that the man doesn't have any significant infertility problems. If something in the results looks irregular, your doctor might order further tests to pinpoint the problem. At this point, if you aren't already seeing a urologist, you should considering seeing a specialist.
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What a Semen Analysis Can Detect
Azoospermia. No sperm are produced, or the sperm aren't appearing in the semen.
Oligospermia. Few sperm are produced.
Problems with sperm motility; if sperm aren't moving normally, they are less likely to be capable of fertilizing an egg.
Problems with sperm morphology; problems with the form and structure -- or morphology -- of the sperm may cause infertility.
But while these conditions may be the direct reason that you can't conceive, they themselves may be caused by an underlying medical condition. Your doctor will probably want to investigate the issue further by ordering blood and urine tests or other procedures.
Reasons for Male Infertility
There are a wide number of reasons for male infertility. Some are caused by physical problems that prevent the sperm from being ejaculated normally in semen. Others affect the quality and production of the sperm itself.
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Possible Male Fertility Problems
Sexually transmitted diseases or other infections. Genital infections such as chlamydia and gonorrhea can cause infertility in men. The infertility can often be resolved by treating the infection.
Blockages, birth defects, or physical damage. Insome cases, men are born with blockages in parts of the testicle or other abnormalities that prevent sperm from getting into the semen. Physical trauma to the testicles, prostate, and urethra can also result in fertility problems. Surgery can sometimes correct the problem.
Retrograde ejaculation. In this disorder, semen doesn't come out of the penis during ejaculation, but instead enters the bladder. It can be caused by diabetes, certain medications, and surgery to the bladder, prostate, or urethra.
Genetic diseases. Although it's rare, genetic illnesses such as cystic fibrosis or chromosomal disorders can cause infertility.