Male Infertility: Causes, Symptoms, Diagnosis and Treatment

What Is Male Infertility?

Male infertility is a reproductive health condition in which a man has difficulty contributing to a pregnancy. It may occur due to problems with sperm production, sperm quality, sperm movement, hormone levels, or the transport of sperm through the reproductive system.

For natural conception to occur, sperm must travel through the female reproductive tract and fertilize an egg. Factors such as a low sperm count, poor sperm motility, abnormal sperm morphology, hormonal imbalances, or blockages in the reproductive tract can affect this process.

Male infertility can affect individuals and couples at different stages of their reproductive journey. With appropriate medical evaluation, the underlying cause can often be identified, and suitable treatment options can be discussed.

At Jyoti IVF, understanding the possible causes of infertility is an important step towards helping individuals and couples make informed decisions about their fertility care.

Types of Male Infertility

Male infertility is commonly described in two categories:

1. Primary Infertility

Primary infertility refers to a situation in which a man has never contributed to a pregnancy with a partner.

2. Secondary Infertility

Secondary infertility refers to difficulty achieving another pregnancy after a previous pregnancy has occurred.

Both conditions may be associated with changes in reproductive health, underlying medical conditions, or other fertility-related factors. A medical assessment can help determine the possible cause and guide further care.

When Should You Get Checked for Male Infertility?

Couples are generally advised to seek a fertility evaluation if pregnancy has not occurred after 12 months of regular, unprotected sexual intercourse.

An earlier evaluation may be appropriate when the female partner is aged 35 or older, or when either partner has known fertility concerns or risk factors. Men with a history of testicular injury, reproductive surgery, certain medical treatments, or sexual or hormonal difficulties may also benefit from an earlier consultation.

Male infertility is sometimes overlooked, but male-related factors contribute to many cases of difficulty conceiving. Fertility evaluation may identify a male factor, a female factor, or a combination of factors affecting both partners.

Seeking medical advice early can help clarify the situation and identify appropriate next steps.

How Common Is Male Infertility?

Infertility can affect both men and women. Male factors may be the primary cause in some couples and may contribute alongside female factors in others.

A complete fertility assessment is important because the cause cannot always be determined from symptoms alone. Some men with fertility difficulties have no obvious symptoms and may discover a problem only after undergoing testing.

Common male reproductive health concerns associated with infertility include:

• Low sperm count: Fewer sperm than expected in the semen.
• Poor sperm motility: Reduced ability of sperm to move effectively.
• Abnormal sperm morphology: Differences in sperm shape that may affect reproductive function.
• Problems with sperm production: The testes may produce fewer sperm or, in some cases, no sperm.
• Obstructions in the reproductive tract: Blockages may prevent sperm from entering the semen.
• Hormonal imbalances: Changes in hormones involved in sperm production may affect fertility.
• Ejaculation-related difficulties: Problems with ejaculation or the backward flow of semen may interfere with conception.

The significance of each finding depends on the individual’s medical history and the results of the complete fertility evaluation.

Who Is at Greater Risk of Male Infertility?

Several factors may increase the likelihood of male fertility problems. These include:

• Increasing age: Male fertility can change with age, although the effect varies between individuals.
• Excess body weight: Obesity may be associated with hormonal changes and reduced reproductive health.
• Smoking and tobacco use: These may negatively affect sperm quality.
• Excessive alcohol consumption and recreational drugs: Certain substances can affect reproductive function.
• Anabolic steroid use: These substances can suppress the body’s natural hormone production and reduce sperm production.
• Exposure to environmental toxins: Certain pesticides, heavy metals, solvents, and other workplace chemicals may affect reproductive health.
• Excessive heat exposure: Frequent or prolonged exposure to high temperatures around the testes may affect sperm production in some circumstances.
• Testicular injuries or medical conditions: Previous injuries, infections, undescended testes, or other testicular conditions may affect fertility.
• Genetic conditions: Some inherited or chromosomal conditions can interfere with sperm production.
• Certain medications and treatments: Some medicines, chemotherapy, radiation therapy, and other treatments may affect sperm production.
• Varicocele: Enlarged veins within the scrotum may be associated with impaired sperm production or quality in some men.

Having one or more risk factors does not necessarily mean that a man is infertile. Anyone concerned about their reproductive health should discuss their medical history and possible risks with a qualified healthcare professional.

How Is Male Infertility Diagnosed?

Male infertility assessment involves understanding medical history, evaluating reproductive health, and conducting appropriate tests. The investigations recommended will depend on the individual’s symptoms, examination findings, and fertility goals.

1. Semen Analysis

Semen analysis is usually one of the first investigations performed during a male fertility assessment. A laboratory examines a semen sample to evaluate several characteristics, including:

• Sperm concentration and count: The number of sperm present in the sample.
• Sperm motility: How effectively sperm move.
• Sperm morphology: The proportion of sperm with typical shapes.
• Semen volume and other characteristics: These may provide additional information about reproductive function.
• Other findings: Where indicated, the laboratory may assess signs of inflammation or other abnormalities.

An abnormal result does not automatically mean that natural conception is impossible. Because semen parameters can vary, a doctor may recommend repeating the test or conducting additional investigations.

2. Sperm DNA Fragmentation Testing

Sperm DNA fragmentation testing assesses damage to the genetic material within sperm.

It may be considered in selected cases, depending on the clinical history and previous fertility outcomes. It is not required for every man undergoing a fertility evaluation, and the result should be interpreted alongside other clinical findings.

3. Post-Ejaculatory Urine Analysis

Post-ejaculatory urine analysis may be recommended when retrograde ejaculation is suspected.

In retrograde ejaculation, semen flows partly or completely backward into the bladder instead of being expelled normally. A urine sample collected after ejaculation can be examined for sperm to help assess this possibility.

4. Physical Examination

A clinician may perform a physical examination, with the patient’s informed consent, to assess the testes and other relevant reproductive structures.

The examination may help identify findings such as a varicocele, differences in testicular size, or other abnormalities that require further investigation.

5. Medical and Reproductive History

A detailed medical history helps the doctor understand factors that may be affecting fertility. This may include:

• Previous illnesses, infections, or injuries.
• Past surgeries involving the reproductive system.
• Current medications and previous medical treatments.
• Sexual function and ejaculation-related concerns.
• Lifestyle and occupational exposures.
• Previous fertility investigations or treatments.
• Family history of reproductive or genetic conditions.

6. Hormonal Testing

Blood tests may be recommended to measure hormones involved in reproductive function, such as follicle-stimulating hormone (FSH), luteinising hormone (LH), and testosterone.

Additional tests may be advised depending on the symptoms and initial findings. Hormonal investigations can help evaluate certain causes of reduced sperm production or sexual dysfunction.

7. Scrotal Ultrasound

A scrotal ultrasound uses sound waves to examine the testes and surrounding structures.

It may be recommended when the physical examination or medical history suggests a structural problem. Depending on the circumstances, it can help investigate abnormalities such as a suspected varicocele or testicular lesion.

8. Testicular Biopsy or Surgical Sperm Retrieval Assessment

In selected cases, a specialist may recommend a procedure to investigate sperm production or retrieve sperm directly from the testicular tissue.

These procedures are not routinely required for every man with infertility. The appropriate approach depends on factors such as whether sperm are present in the ejaculate, suspected obstruction, hormonal findings, and the overall clinical assessment.

What Are the Treatment Options for Male Infertility?

Treatment depends on the underlying cause, the severity of the fertility problem, the female partner’s reproductive health, and the couple’s preferences. Not every patient requires IVF or surgery; some may benefit from treating an underlying condition or making targeted lifestyle changes.

1. Lifestyle Changes and Medical Treatment

When appropriate, a doctor may recommend changes that support reproductive health, such as:

• Stopping smoking and avoiding recreational drugs.
• Limiting or avoiding alcohol.
• Maintaining a balanced diet and a healthy weight.
• Exercising regularly without excessive training.
• Reviewing exposure to heat and workplace chemicals.
• Managing existing medical conditions.
• Reviewing medications that may affect sperm production.

Medical treatment may be helpful for certain hormonal disorders, infections, or other identified conditions. Hormonal medicines should only be used when clinically indicated and prescribed by a qualified doctor.

Important: Testosterone replacement therapy and anabolic steroids can suppress sperm production. Men who wish to conceive should discuss any hormone treatment with a specialist before starting or changing it.

2. In Vitro Fertilisation (IVF)

In vitro fertilisation (IVF) involves fertilising eggs with sperm in a laboratory and transferring an embryo into the uterus.

IVF may be considered when male infertility is associated with certain sperm-related problems, when other treatments are unsuitable, or when additional fertility factors are present.

The recommended treatment depends on the couple’s complete fertility assessment. IVF does not guarantee pregnancy, and outcomes vary between individuals.

3. Intracytoplasmic Sperm Injection (ICSI)

Intracytoplasmic sperm injection (ICSI) is a laboratory technique in which a single sperm is injected directly into a mature egg.

ICSI may be recommended in selected cases of male-factor infertility, including significantly reduced sperm count or motility, certain sperm-related abnormalities, or previous fertilisation difficulties during IVF.

The suitability of ICSI depends on the clinical circumstances. Although it can help overcome some fertilisation problems, it cannot guarantee embryo development or pregnancy.

4. Micro-TESE

Microsurgical testicular sperm extraction (Micro-TESE) is a surgical procedure used in selected cases of non-obstructive azoospermia, a condition in which no sperm are found in the ejaculate because sperm production is severely impaired.

Using an operating microscope, a surgeon examines testicular tissue to identify areas that may contain sperm. Retrieved sperm may sometimes be used for ICSI.

Micro-TESE is not suitable for every patient, and sperm retrieval is not guaranteed. A specialist will evaluate the cause of azoospermia and discuss the potential benefits, risks, and alternatives before recommending the procedure.

5. Sperm Donor Programme

When sperm cannot be obtained or used successfully, or when donor sperm is otherwise appropriate, a couple may consider treatment using donor sperm.

This option involves medical counselling, appropriate screening, informed consent, and compliance with applicable legal and regulatory requirements. The available treatment approach depends on the couple’s circumstances and the clinical assessment.

Can Male Infertility Be Prevented?

Not all causes of male infertility can be prevented, particularly those associated with genetic conditions or certain medical disorders. However, some lifestyle and environmental factors can be modified to support reproductive health.

Consider the following measures:

• Avoid smoking, tobacco, anabolic steroids, and recreational drugs.
• Limit alcohol consumption.
• Maintain a healthy weight through balanced nutrition and regular physical activity.
• Seek medical advice for testicular pain, swelling, injuries, or other reproductive symptoms.
• Discuss fertility preservation before chemotherapy, radiation therapy, or other treatments that may affect sperm production.
• Use appropriate protective equipment when working around reproductive toxins or hazardous chemicals.
• Consult a doctor before taking supplements or fertility medicines.

These measures may support general and reproductive health, but they cannot guarantee fertility.

When Should You Consult a Fertility Specialist?

Consider consulting a fertility specialist if pregnancy has not occurred after the recommended period of trying, or sooner if you have known reproductive health concerns.

An assessment may be particularly important if you have a history of undescended testes, testicular surgery or injury, chemotherapy, hormonal problems, ejaculation difficulties, or previously abnormal semen analysis results.

Both partners may benefit from being evaluated together, as fertility difficulties can involve one or both partners.

Take the Next Step Towards Understanding Your Fertility

Male infertility can have several possible causes, and the right approach begins with an accurate assessment rather than assumptions. Depending on the findings, treatment may involve lifestyle changes, medical management, assisted reproductive techniques, surgical sperm retrieval, or donor sperm.

Jyoti IVF encourages individuals and couples experiencing difficulty conceiving to seek professional guidance and understand the options available to them.

Speak with a qualified fertility specialist to discuss your medical history, recommended investigations, and a treatment plan suited to your circumstances.

Medical disclaimer: This article is intended for general educational purposes and does not replace professional medical advice, diagnosis, or treatment. Fertility investigations and treatments should be selected by a qualified healthcare professional based on an individual assessment.