Causes of Low Sperm Count

There are many causes of low sperm count ranging from health issues to medical treatments. Some of these causes include:

Infection: Some infections can interfere with sperm production or sperm health or can cause scarring that blocks the passage of sperm. These include inflammation of the epididymis (epididymitis) or testicles (orchitis) and some sexually transmitted infections, including gonorrhea or HIV. Although some infections can result in permanent testicular damage, most often sperm can still be retrieved.

Recommended: Common Causes of Watery Semen

Ejaculation problems: Retrograde ejaculation occurs when semen enters the bladder during orgasm instead of emerging out of the tip of the penis. Various health conditions can cause retrograde or lack of ejaculation, including diabetes, spinal injuries, and surgery of the bladder, prostate or urethra.

Varicocele: A varicocele is a swelling of the veins that drain the testicle. It's the most common reversible cause of male infertility. Although the exact reason that varicoceles cause infertility is unknown, it might be related to abnormal testicular temperature regulation. Varicoceles result in reduced quality of the sperm.

Certain medications : These also may result in ejaculatory problems, such as blood pressure medications known as alpha blockers. Some ejaculatory problems can be reversed, while others are permanent. In most cases of permanent ejaculation problems, sperm can still be retrieved directly from the testicles.

Antibodies that attack sperm: Anti-sperm antibodies are immune system cells that mistakenly identify sperm as harmful invaders and attempt to destroy them.

Undescended testicles: During fetal development one or both testicles sometimes fail to descend from the abdomen into the sac that normally contains the testicles (scrotum). Decreased fertility is more likely in men with this condition.

Hormone imbalances: The hypothalamus, pituitary and testicles produce hormones that are necessary to create sperm. Alterations in these hormones, as well as from other systems such as the thyroid and adrenal gland, may impair sperm production.

Tumors, Cancers and nonmalignant tumors are causes of low sperm count .They can affect the male reproductive organs directly, through the glands that release hormones related to reproduction, such as the pituitary gland, or through unknown causes. Surgery, radiation or chemotherapy to treat tumors can also affect male fertility.

Defects of tubules that transport sperm: Many different tubes carry sperm. They can be blocked due to various causes, including inadvertent injury from surgery, prior infections, trauma or abnormal development, such as with cystic fibrosis or similar inherited conditions. Blockage can occur at any level, including within the testicle, in the tubes that drain the testicle, in the epididymis, near the ejaculatory ducts or in the urethra.

Chromosome defects:Inherited disorders such as Klinefelter's syndrome - in which a male is born with two X chromosomes and one Y chromosome instead of one X and one Y - cause abnormal development of the male reproductive organs. Other genetic syndromes associated with infertility include cystic fibrosis, Kallmann's syndrome and Kartagener's syndrome.

Celiac disease: A digestive disorder caused by sensitivity to gluten, celiac disease are causes of low sperm count, thereby causing male infertility. Fertility may improve after adopting a gluten-free diet.

Prior surgeries: Certain surgeries might prevent you from having sperm , including vasectomy, inguinal hernia repairs, scrotal or testicular surgeries, prostate surgeries, and large abdominal surgeries performed for testicular and rectal cancers, among others. In most cases, surgery can be performed to either reverse these blockages or to retrieve sperm directly from the epididymis and testicles

Certain medications: Testosterone replacement therapy, long-term anabolic steroid use, cancer medications (chemotherapy), certain antifungal and antibiotic medications, some ulcer medications and other medications are causes of low sperm count. They can impair sperm production and decrease male fertility.

Environmental causes : Sperm production or function can be affected by overexposure to certain environmental elements, including:Industrial chemicals, extended exposure to benzenes, toluene, xylene, herbicides, pesticides, organic solvents, painting materials and lead are causes of low sperm count.

Heavy metal exposure: Exposure to lead or other heavy metals also can cause infertility.

Overheating the testicles: Elevated temperatures impair sperm production and function. Although studies are limited and are inconclusive, frequent use of saunas or hot tubs might temporarily impair sperm count. All these are causes of low sperm count

Sitting for long periods, wearing tight clothing or working on a laptop computer for long stretches of time also might increase the temperature in your scrotum and slightly reduce sperm production.

Radiation or X-rays: Exposure to radiation can reduce sperm production. It can take several years for sperm production to return to normal. With high doses of radiation, sperm production can be permanently reduced.

Health, lifestyle and other causes such as:

Drug use: Anabolic steroids taken to stimulate muscle strength and growth can cause the testicles to shrink and sperm production to decrease. Use of cocaine or marijuana might reduce the number and quality of your sperm as well.

Tobacco smoking: Men who smoke might have a lower sperm count than do those who don't smoke.

Occupation: Certain occupations might be linked with a risk of infertility, including welding or those associated with prolonged sitting, such as truck driving. However, the data to support these associations is inconsistent.

Emotional stress: Severe or prolonged emotional stress, including stress about fertility, might interfere with hormones needed to produce sperm.

Alcohol use: Drinking alcohol can lower testosterone levels and cause decreased sperm production.

Weight: Obesity can impair fertility in several ways, including directly impacting sperm and by causing hormone changes that reduce male fertility.

Sperm testing issues: Lower than normal sperm counts can result from testing a sperm sample that was taken too soon after your last ejaculation; was taken too soon after an illness or stressful event; or didn't contain all of the semen you ejaculated because some was spilled during collection. For this reason, results are generally based on several samples taken over a period of time.

Symptoms of low sperm count

The main sign of low sperm count is the inability to conceive a child. There might be no other obvious signs or symptoms. In some cases, an underlying problem such as an inherited chromosomal abnormality, a hormonal imbalance, dilated testicular veins or a condition that blocks the passage of sperm may cause signs and symptoms. Other Low sperm count symptoms include:

Problems with sexual function - for example, low sex drive or difficulty maintaining an erection (erectile dysfunction)

Pain, swelling or a lump in the testicle area

Decreased facial or body hair or other signs of a chromosome or hormone abnormality

When to see a doctor

See a doctor if you have been unable to conceive a child after a year of regular, unprotected intercourse if you have any of the following:

Erection or ejaculation problems, low sex drive, or other problems with sexual function,

Pain, discomfort, a lump or swelling in the testicle area

A history of testicle, prostate or sexual problems

Groin, testicle, penis or scrotum surgery