Male sperm life changes

Male sperm life changes
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To nurture a healthy younger generation, males must be aware of their important weapon--sperm.United States men's health magazine, the author, describes the changes of sperm in a lifetime.
14~16sui: mature sperm appear and have nocturnal emission phenomena.
20~29sui: this is the most active period of sperm in male life.Every "tadpoles" is ready to make egg insemination.
30~39sui: male androgen levels begin to fall, lower sperm count, erectile dysfunction variation.
40~49sui: every year, the activity of your sperm to 0.7% down.In order to improve sperm status, men at this time the amount of vitamin B12.
50~59sui: New York University research proves that if the wife when pregnant, men aged over 50 years, the chance of a child suffering from birth defects would be 2.1%, it is recommended that the eat more foods rich in folic acid.
Over 60 years: over 60 years old, 85% are malformation of sperm.Although some 60 years after father of clinical cases, but it is divided into two extremes: one is the particularly high infant physical and IQ; on the other hand, infants suffering from many diseases--the more common clinical.
Male sperm outside the body live up to 24 hours
Normal sex mature men discharged one ejaculation while tens of millions of even as high as about 200 million sperm, but most of these sperm in the female reproductive tract in the acidic environment of losing its vitality and death.In General, life of the sperm in the vagina is not more than 8 hours, only a small fraction of sperm out of danger and continue to move forward.When sperm upward scrambling to reach the uterine cavity is, the quantity of only when ejaculation-1%, which is why?Because when ejaculation of sperm in semen, semen can be protected by the decomposition of large amounts of fructose and glucose by enzyme, when left the semen after the sperm into the uterine cavity, its existence far inferior in semen, so life is significantly reduced, poor quality of the sperm runs slow, slow to reach the uterine cavity, and loses its vitality.Through road, road barriers, would ultimately reach the fallopian tube sperm in fertilization parts are there.
However, the sperm just got inside the fallopian tube, it has strong ability of fertilization.Of course, can last only 1-2 sperm and the egg, remaining sperm are 24-36 within hours of death.But stored in crypt of cervical mucosa of sperm, its life up to 2-6 days, nevertheless, its ability to fertilization has basically lost, because most sperm fertilizing capacity can only last for 20 hours or so.
Analysis of sperm quality index
Important indicators of sperm count is a measure of fertility, but at the time of analysis, must be combined with individual circumstances.
1) semen volume: each row of fine 2~5ml in normal subjects, if less than 1ml, that is not OK.Each row of fine (0.5ml for the sperm of reducing, in the absence of semen of azoospermia.Azoospermia and is capable of reducing the main causes of male infertility.Seen in prostate and seminal vesicle diseases, congenital occlusion of ureter or inflammatory stenosis, or retrograde row fine.
2) color: normal to grey, long is not when ejaculation is pale yellow, milky white or greenish in genital tract or a Deputy gland infection; semen red (blood essence) in seminal vesiculitis, cancer, tuberculosis, etc.

3) viscosity: normal fresh semen was liquid, discharged quickly becomes a viscous gel of peptone semi-fluid, 5-30 minutes and becomes liquid
If 30 minutes are not liquefied, is the exception, found: some prostate secretion of the enzyme deficiency or deficiencies, can also be found in the reproductive system tuberculosis, can also affect fertility.
4) pH (pH): normal is of weak alkaline, pH of semen between the 7.7~8.5 acid or alkali may affect the sperm activity and metabolism, kills sperm is (dead azoospermia) of the main reasons.

5) smell: normal with a special flavor of semen, issued by the prostatic fluid, the flavor comes from a component in prostatic fluid.

6) sperm count: normal fertility in men, 0.6~1.5 billions of sperm per ml of semen, sometimes up to 200 million.A row of fine total emission of sperm is about more than 300 million, but the sperm content variation of the large varies, even within the same person at different times, can also access.Therefore, calculate the total discharge of sperm at a time, its diagnosis significance greater than separate checks sperm count.
Sperm density is too high (more than 250 million per ml) are called sperm with too much, high density, often affect sperm activity, even if the pregnancy, and abortion-prone, the main reason is the sperm quality is not high.

For evaluating male fertility, also use a fertility index (I) research.Mainly in the percentage of active sperm (m), the number of sperm per ml of semen (n), sperm velocity (v), the percentage of abnormal sperm (a) and 10 for the constants are combined, it is: I=M.N.V./A.106, if it is greater than 1, represents fertility, if is 0, completely sterile, if between the 0~1, said there may be children.