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What exactly happens when a man is infertile?
When a man is infertile, I know that what happens is he either doesn't have enough sperm or the sperm that he does have "doesn't work". Right? Please, correct me if I'm wrong. But what I want to make sure that I understand is what happens inside of his body, like the scientific form of an answer. If anyone out there knows, please feel free to help.
Thank you in advance for anyone who takes the time to answer!
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Want to answer more questions in the Sexual Health and Reproduction category?
Maybe give some free advice about: Infertility?
Here is a list I found of some of the causes.
Causes Of Male Infertility Deficient sperm production
Specifically, inadequate sperm production by the testes or poor sperm motility. This may be due to
Environmental toxins such as chemicals
Radiation
Drugs
Heavy metal exposure
Cigarette smoking
Street drug use
Pollution
Frequent sex
Prolonged exposure to heat from hot tubs or saunas
Wearing underwear or pants that are too tight
Stress
Poor diet
Lifestyle habits
Causes Of Temporary Low Sperm Count
Increased scrotal temperature
Infections, the common cold, the flu, etc.
Increased stress
Lack of sleep
Overuse of alcohol, tobacco, or marijuana
Many prescription drugs
Exposure to radiation
Exposure to solvents, pesticides, and other toxins
Other causes of male infertility
Varicose condition of the scrotum
Previous GU infection, or infection with mumps
Certain prescription drugs, such as co-trimoxazole, testerone, anti- ulcer drug cimetidine (Tagamet), nitrofurantoin (Furadantin, Macrodantin) used in the treatment of urinary tract infections
Undescended testes
Diabetes
Infectious disease and glandular diseases affecting the hypothalamus, pituitary and the testes. Nutrient deficiencies also have a role to play.
Ductal obstruction - An obstruction of the seminal tract will decrease or stop the passage of sperm from the testes to the urethra for ejaculation. This may result from
Congenital defects
Infection of the epidydimis, testes, seminal vesicles, urethra, prostate or vas
Urethral stricture
Cystic fibrosis
Vasectomy
Ejaculatory dysfunction
Premature ejaculation
Retrograde ejaculation
Disorders of accessory glands
Infection
Inflammation
Antisperm antibodies
Coital disorders
Defects in technique
Premature withdrawal
Erectile dysfunction
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Infertility in men is most often caused by:
A problem called varicocele (VAIR-ih-koh-seel). This happens when the veins on a man's testicle(s) are too large. This heats the testicles. The heat can affect the number or shape of the sperm.
Other factors that cause a man to make too few sperm or none at all.
Movement of the sperm. This may be caused by the shape of the sperm. Sometimes injuries or other damage to the reproductive system block the sperm.
Sometimes a man is born with the problems that affect his sperm. Other times problems start later in life due to illness or injury. For example, cystic fibrosis often causes infertility in men
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