All About Male Infertility: Signs, Symptoms and Diagnosis
Have you and your male partner tried without success to get pregnant and have a baby? Most people think women are usually responsible for infertility. In reality, infertility is often linked to health problems with men. About 40 percent of conception problems are attributed to male infertility.
Most of the time, men show no outward signs of male infertility. Yet if the cause of male infertility is hormonal, your partner may have some outward signs such as a decrease in sex drive or reduced hair growth on his face or body.
Sperm quality and quantity
Most common causes of male infertility are related to sperm health. The following sperm-related issues can affect a man's fertility, making it harder for a couple to get pregnant.
- Abnormally shaped sperm
- Sperm with poor motility
- Poor sperm quality
- Sperm that cannot attach the head to egg
- Sperm that cannot penetrate the egg
How low is too low?
Low sperm count is a common male infertility problem. Usually men have 20 million sperm per milliliter of semen, while a count of 10 million sperm per milliliter or lower is considered low.
Some men suffer from azoospermia, a condition where the ejaculation does not contain sperm. This male infertility problem may be caused by infection, testicles that don’t produce sperm, a congenital absence of the vas deferens, or a previous vasectomy. A semen analysis can tell you more.
Causes of male infertility
In this section, we list a number of causes of male infertility:
- Hormonal disorders
- Chromosomal defects
- A deficiency in testosterone production
- Infection - Infection can cause inflammation of the male testicles, urethra, or prostate, harming sperm production or movement
- Sexually transmitted diseases (STDs)
- A male birth defect called hypospadia where the urinary opening is located on the underside of the penis, rather than the tip.
- Retrograde ejaculation where the sperm enters into the bladder rather than out of the penis after ejaculation.
Also, your partner’s testicles must be exposed to the proper temperature in order for sperm production to occur. Two conditions that may not allow this to happen include:
- An undescended testicle, which keeps the testicles close to the higher body temperature and does not allow them to be cooled properly
- A varicocele, a condition where a swollen vein in the scrotum doesn’t allow for cooling of the testicles, leading to reduced sperm count and motility
Lifestyle habits lead to male infertility
Certain lifestyle habits can also affect male infertility, including:
- Excessive alcohol consumption
- Drug use
- Being overweight or obese
- Poor diet
In addition, exposure to certain toxins, pesticides or lead can also cause male infertility. If your partner has been exposed to radiation and/or chemotherapy due to cancer treatment or for any reason, there can be a significant risk to his sperm production. Also, having a vasectomy may cause anti-sperm antibodies to form and attack sperm, leading to male infertility, which may cause problems if your partner wants to have a vasectomy reversal.
Diagnosing male infertility
If a doctor suspects male infertility, he may run some tests to make a definitive diagnosis. Your partner may first undergo a routine physical exam and semen analysis. The semen analysis will analyze the number of available sperm, the shape of the sperm and its movement. If the semen analysis shows a problem, your doctor may recommend further testing. Other tests for male infertility may include:
- A semen culture to look for infection
- A vital staining test to determine how many sperm are alive in a sample
- A blood test that checks for abnormal hormone levels or genetic disorders
- A sonogram of the scrotum to look for blockages
- A testicular biopsy to see if sperm production is normal
- A test for anti-sperm antibodies
- A contrast dye test of the vas deferens to check for a blockage
Lastly, your doctor may run male infertility tests to see how well the sperm attaches to an egg or is able to penetrate it.
When pregnancy does not come easily, both partners may want to seek testing for fertility problems and possible causes.Sources
- Mayo Clinic: Male Infertility.
- American Society of Reproductive Medicine: Patient Fact Sheet: Diagnostic Testing for Male Factor infertility.