Although one sperm is adequate for fertility, according to reports, men with sperm concentration lower than 20 million cells/mL (or less than 50 million cell/ejaculation) are more likely to infertility.
Is increased risk of infertility in oligospermia only related to low sperm count?
If the semen sample of fertile men diluted to reach the concentration less than 20 million cell/ml, fertility rate is reduced to the infertile men level?
As of 2010, World Health Organization states that the lower normal count of sperm is : 15 M/ml.
Science and Medicine being empirical fields, theories, hypotheses change with new evidence and studies, 20 M/ml was prior to 2010.
The condition of having sperm below the normal 15M/ml is called oligozoospermia, it does not mean that the male is infertile but it can be a cause. Male infertility refers to a male's inability to cause pregnancy in a fertile female, thus oligozoospermia can be a cause, if the sperm cells are defective. If an oligozoospermic male has fathered a child through natural way, he is considered fertile, otherwise, the same condition will be considered as a cause of infertility.
There are many clinical conditions that can lead to male infertility, you will find simple good resources online for your reference.
Dilution is done for various reasons, one is to avoid overcrowding when an IVF technique is being performed to fertilize an oocyte. You are aware that out of millions of sperm deposited in the female tract in natural intercourse , only a hundred reaches the oocyte in the fallopian tube, out of which only one will fertilize the egg.
Natural conception and artificial reproduction are two different issues. Till date only 15%- 20 % patients can conceive through assisted reproduction, though this number might be on the rise with collaborative reproduction or third party reproduction!
I have tried not to be too elaborate , however hope my reply might answer your queries!
Dear Hermaz, thank you for useful information.
I want to know what is the couse of high risk of infertily in oligozoospermia? Is it only for low count?
For example: if 50 M cell of normal and oligozoospermia men collected and used in IUI, is fertility accored in same probability?
low sperm count leads to oligospermia or oligozoospermia at the same men who have 20 millions/ml sperm cells not conceiving the reason might be slow motile cells. if the patient having enough count, but the cells slow motile they called oligoasthenozoospermia.
Dear Behnam,
Failure for male conception is usually one of three factors:
Low sperm Count
Low sperm motility
Low sperm morphology
and any combination of these issues can play a role in male infertility.
My research is in the area of sperm morphology. Even if ICSI enables one sperm to be injected across the zone pellucida of an ovum, the resulting conception may not survive if DNA fragmentation is high in that particular sperm. Low sperm morphology is an increasingly recognised cause of first trimester abortion, with or without IVF.
I hope thy answer assists your search for information in this field,
Sincerely,
Giselle
Low sperm count is may be associated with low motility, abnormal/ defected spermatozoa & or enzyme & coenzyme linked defects which can lead to infertility. Low sperm count itself suggests deviation from normal physiological mechanism & infertility.
The higher the sperm count the greater the probability of released egg being fertilized. The reverse is equally true. Moreover many of the causes of oligospermia (low sperm count) also affect other quality parameters of sperm cells such as its morphology, motility, rate of decapitation, penetration etc. As such the infertility associated with low sperm count is multifactorial in nature. The success rate of IVF withsperm cells of patients with oligospermia is relatively very poor pointing to the facts that low sperm count is associated with other unidentified derangederangement.
Hi, low sperm count can be caused by a number of health issues and medical treatments. Some of these include: Varicocele. Although the exact reason that varicoceles cause infertility is unknown, it might be related to abnormal testicular temperature regulation. Low sperm count reduces chances of fertility in men. This could acquired or inherited but it is majorly acquired. Increased temperature and destructive life styles can increase sperm low count.To remedy the situation eat food that will boost sperm count such as nuts.
Low sperm count lead to low probability for fertility, didn't means absolute infertility.
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