What causes infertility in men?? What re the main factors of it??(exclude birth deffects)?

What causes infertility in men?? What re the main factors of it??(exclude birth deffects)

There are many reasons. Bad lifestyle helps a lot to increase infertility in men. By our sitting posture, we tend to keep our testicles between our legs for long period, this increases the temperature of the area, which increase the chances of infertility. Laptop add to it by increasing the temperature of the area further.

Causes and Risk Factors

Common causes for male infertility are impaired sperm production, impaired sperm delivery, and testosterone deficiency (hypogonadism).
Infertility can result from a condition that is present at birth (congenital) or can develop later (acquired). Causes for infertility include the following:


Chemotherapy

Defect or obstruction in the reproductive system (e.g., cryptorchidism, anorchism)

Disease (e.g., cystic fibrosis, sickle cell anemia, sexually transmitted disease [STD])

Hormone dysfunction (caused by disorder in the hypothalamic-pituitary-gonadal axis)

Infection (e.g., prostatitis, epididymitis, orchitis)

Injury (e.g., testicular trauma)

Medications (e.g., to treat high blood pressure, arthritis)

Metabolic disorders such as hemochromatosis (affects how the body uses and stores iron)

Retrograde ejaculation (i.e., condition in which semen flows backwards into the bladder during ejaculation)

Systemic disease (e.g., high fever, infection, kidney disease)

Testicular cancer

Varicocele


Retrograde ejaculation occurs when impairment of the muscles or nerves of the bladder neck prohibit it from closing during ejaculation. It may result from bladder surgery, a congenital defect in the urethra or bladder, or disease that affects the nervous system. Diminished or "dry" ejaculation and cloudy urine after ejaculation may be signs of this condition.

Testosterone Deficiency

Hypogonadism may be present at birth (congenital) or may develop later (acquired). Causes of the condition are classified according to their location along the hypothalamic-pituitary-gonadal axis:


Primary, disruption in the testicles

Secondary, disruption in the pituitary gland

Tertiary, disruption in the hypothalamus


Hope it helps

Hi there !
More than 90% of the cases of male infertility have been due to :
-low sperm count,
-poor sperm quality, or
-both reasons together.
This includes low quality and quantity of the sperm , poor motility, abnormal sperm morphology ( large head, small pin point head, two heads, crooked head, etc etc.)

other reasons include genetic abnormality, malnutrition and nutrient deficiencies, obesity, bicycling, toxins, chemicals, infections, over exposure to estogen hormone etc .
best wishes !

Two more reasons other than mentioned above;
1. Constant use of laptops on your lap.
2. Over exposure to X-Rays.
There are some herbal supplements to increase the sperm count.