Male infertility: Understanding Causes and Treatment| Birla Fertility & IVF

Causes of Male Infertility

Male fertility is a complex process. For pregnancy, the following must occur:

Production of healthy sperm
Delivery of sperm into the seminal fluid (semen)
Presence of an adequate number of sperm in the semen
Movement of sperm to reach the partner’s egg

Any problems in these functions lead to male infertility. Some of the causes are listed below:

Sperm Disorders

According to the World Health Organisation, sperm is considered fertile if:

There is a concentration of 15 million sperm per ml of semen
There is a motility of 40% or more
Shape of sperm by strict Kruger analysis is 4% or higher

Sperm disorders such as low or no sperm count, low sperm motility and abnormal morphology are some of the most common problems associated with male infertility. These disorders can be congenital or acquired through poor lifestyle choices, certain medical treatments (such as chemotherapy) and trauma.

Varicocele

Varicoceles are enlarged veins in the testicles. They are similar to varicose veins found in the leg. Varicoceles generally develop over time and are a common cause of low sperm production and reduced sperm quality.

Ejaculation Disorders

Improper ejaculation can also cause infertility. Retrograde ejaculation is a condition where semen enters the bladder during an orgasm instead of emerging out of the tip of the penis. Retrograde ejaculation can be caused by several health conditions such as diabetes, spinal injuries or even certain medications and surgical interventions.

Hormone Imbalances

Disorder of the testicles or problems with other hormonal systems including hypothalamus, pituitary, thyroid and adrenal glands can impact fertility. These hormonal problems are generally symptoms of other underlying conditions.

Structural Defects

Sperm is produced in the testicles and transferred into the semen via tubes. Blockage in these tubes impact the flow of sperm into the semen, resulting in low or no sperm count in the ejaculate.

Blockage can occur in any part of the male reproductive system including the testicles due to various causes like surgery, trauma, prior infections, and inherited conditions.

Chromosome Defects

Genetic defects and certain inherited disorders can cause infertility. These conditions can result in low, abnormal sperm production or even cause abnormal development of the male reproductive organs.

Environmental Causes

Prolonged exposure to certain environmental factors such as industrial chemicals, heavy metals, radiation, or heat can hamper sperm production or reduce sperm function. These factors include industrial chemicals, heavy metals, and radiation.

Lifestyle

Unhealthy lifestyle choices like consumption of alcohol, tobacco and illicit drugs can have a negative impact on sperm quality and sperm count as well as cause sexual dysfunction. Being obese or overweight can also impair fertility in several ways.

Treatments for Male Infertility

Advances in the field of fertility medicine have brought about dramatic changes in the ability to diagnose and treat problems with male fertility. ICSI or Intra Cytoplasmic Sperm Injection is an ART technique that involves injecting a single sperm cell directly into the egg to promote fertilization in an IVF cycle. This procedure was introduced in the early 1990s and is a preferred treatment for patients with mild or severe male factor infertility.

In some situations, interventional procedures like varicocele repair can be used to improve reproductive function in men.

Surgical sperm retrieval procedures are used to retrieve sperm from the testes in cases where normal sperm production or sperm ejaculation is inhibited. Fortunately, treatment is possible in almost all cases of male infertility.