Male Infertility Causes That Couples Should Not Ignore

Dr. Sandeep Karunakaran
Dr. Sandeep Karunakaran
August 17, 2026
12
min Read
Common Causes of Male Infertility

Male fertility is an important part of conception. Infertility is not a “woman’s problem” or a “man’s problem”. It is a couple’s journey, and both partners need timely evaluation. Male infertility can happen because of low sperm count, poor sperm movement, abnormal sperm shape, hormonal concerns, blockages, infections, genetic factors, lifestyle habits or past medical treatments. The good news is that many causes can be identified through proper testing, and treatment options may be available depending on the diagnosis.

The most important step is not to ignore the signs or delay evaluation.

What Does Male Infertility Mean?

Male infertility means that a male factor is making it difficult for a couple to achieve pregnancy. This may be related to sperm production, sperm quality, sperm delivery or reproductive hormone function.

For pregnancy to happen naturally, the male partner needs to produce healthy sperm, the sperm must be present in adequate numbers, they must move well, and they must be able to reach and fertilise the egg. If any of these steps are affected, conception may become difficult.

It is important to remember that male infertility is a medical condition. It should not be linked with masculinity, blame or shame. A man may have normal sexual function and still have abnormal semen parameters. Similarly, fertility concerns may exist even when there are no obvious symptoms.

Common Male Infertility Causes at a Glance

Cause What it means Why couples should not ignore it
Low sperm count The semen contains fewer sperm than expected. It can reduce the chances of natural conception and may influence whether IUI, IVF or ICSI is recommended.
Poor sperm motility Sperm do not move effectively. Sperm need movement to reach and fertilise the egg. Poor motility can affect fertilisation chances.
Poor sperm morphology Sperm shape or structure is abnormal. Abnormal shape may affect the sperm’s ability to fertilise the egg.
Azoospermia No sperm is found in the semen sample. It may be due to blockage or sperm production problems and needs specialist evaluation.
Varicocele Enlarged veins in the scrotum. It may affect sperm production and sperm quality in some men.
Hormonal imbalance Hormones that support sperm production may be affected. Hormonal issues can affect sperm count, libido and reproductive function.
Blockages Sperm may be produced but unable to reach the semen. Some cases may need surgical evaluation or sperm retrieval techniques.
Infections Past or current infections may affect sperm health or sperm passage. Inflammation or scarring may affect fertility.
Genetic causes Certain inherited or chromosomal conditions may affect sperm production. Severe sperm abnormalities may require genetic testing.
Lifestyle factors Smoking, alcohol, obesity, heat exposure, stress or toxins may affect sperm health. Some lifestyle changes may support better reproductive health over time.
Medical treatment history Chemotherapy, radiation, surgery or certain medicines may affect fertility. Sperm freezing or fertility treatment planning may be needed.

Medical History That Should Be Discussed Before Starting Male Fertility Treatment

A detailed medical history can reveal important clues. Men should tell the fertility specialist about past illnesses, surgeries, medicines and lifestyle exposures, even if they feel unrelated.

Important history includes:

  • Childhood undescended testicles
  • Mumps after puberty
  • Testicular injury
  • Testicular surgery
  • Hernia surgery
  • Previous vasectomy
  • Chemotherapy or radiation
  • Diabetes
  • Thyroid problems
  • Long-term fever
  • Sexually transmitted infections
  • Urinary or reproductive tract infections
  • Use of testosterone or gym steroids
  • Certain long-term medications
  • Family history of fertility problems
  • Exposure to heat, chemicals or radiation at work

Sharing this information honestly helps the doctor plan the right tests and treatment.

Warning Signs Men Should Not Ignore

Male infertility often has no obvious symptoms. For many couples, difficulty conceiving may be the first sign. However, some symptoms should prompt timely medical attention.

Warning sign Why it matters
No pregnancy after 12 months of tryingFertility evaluation should include both partners.
No pregnancy after 6 months if the female partner is over 35Time-sensitive evaluation may be useful.
Pain, swelling or lump in the testicleMay indicate varicocele, infection, injury or another condition.
Very low semen volumeMay suggest blockage, hormonal issues or ejaculation concerns.
Erectile difficultyMay affect sperm delivery and may need medical support.
Ejaculation problemsCan interfere with natural conception.
Reduced libidoMay be linked with hormonal or emotional factors.
Reduced facial/body hairMay suggest hormone-related issues.
History of cancer treatmentChemotherapy, radiation or surgery may affect fertility.
Previous abnormal semen reportNeeds repeat testing and specialist interpretation.

Tests Used to Diagnose Male Infertility

The first and most common test is a semen analysis. It is simple, non-invasive and gives important information about sperm count, motility, morphology and semen volume.

Depending on the findings, the doctor may suggest:

  • Repeat semen analysis
  • Physical examination
  • Hormone tests
  • Scrotal ultrasound in selected cases
  • Genetic testing for severe sperm abnormalities
  • Infection screening
  • Sperm DNA fragmentation testing in selected cases
  • Evaluation for blockages or ejaculation problems

A single semen report should not be interpreted in panic. Results can vary due to fever, stress, illness, abstinence period, lab variation or temporary health factors. The fertility specialist may advise repeat testing before deciding the next step.

Treatment Depends on the Cause

Male infertility treatment is not the same for everyone. The right approach depends on the diagnosis, the severity of the sperm issue, the female partner’s fertility health, age, previous treatment history and the couple’s goals.

Treatment may include:

  • Lifestyle changes
  • Weight management
  • Stopping tobacco, steroids or harmful substances
  • Treating infection where relevant
  • Hormonal treatment in selected cases
  • Surgery for varicocele in selected patients
  • Surgery or repair for blockages in selected cases
  • Sperm retrieval techniques such as PESA, TESA or Micro TESE
  • IUI for mild male factor infertility
  • IVF or ICSI for moderate to severe male factor infertility
  • Sperm freezing before cancer treatment or fertility-risk procedures

The goal is not only to identify the problem but to choose the most suitable treatment path.

IVF for Male Infertility: What Should Couples Know?

In a standard IVF cycle, eggs are collected from the female partner and combined with sperm in the laboratory. However, when male infertility is a major concern, the fertility specialist may recommend IVF with ICSI. In ICSI, a single healthy sperm is carefully selected and injected directly into an egg to support fertilisation.

This can be especially helpful when the sperm count is very low, sperm movement is poor or previous fertilisation attempts have not been successful. ICSI may also be used when sperm is surgically retrieved, as the number of available sperm may be limited.

It is important for couples to understand that IVF for male infertility is not a one-size-fits-all solution. The treatment plan depends on the semen analysis, sperm quality, female partner’s fertility health, age, medical history and previous treatment outcomes.

Mistakes Couples Should Avoid

  • Delaying semen analysis
  • Assuming fertility is normal because there are no symptoms
  • Blaming only one partner
  • Hiding steroid or testosterone use
  • Ignoring testicular pain or swelling
  • Comparing semen reports with online forums
  • Taking supplements without medical advice
  • Waiting too long before consulting a fertility specialist
  • Not discussing sperm freezing before chemotherapy or radiation
  • Treating male fertility as a sensitive topic that should not be discussed

How Oval Fertility Supports Male Fertility Treatment

At Oval Fertility, male fertility is considered an important part of the couple’s fertility journey. The evaluation of male fertility generally begins with a semen analysis. Based on the initial findings and the patient’s medical history, the specialist may recommend further assessments such as hormone tests, scrotal ultrasound, genetic testing or a physical examination. In some cases, additional investigations may also be advised depending on the clinical situation.

WHO-based semen parameters, where a sperm concentration of 15 million or more per ml, progressive motility above 32% and normal morphology above 4% are commonly used as reference points. However, these values are not viewed in isolation. Doctors assess the combined picture of sperm count, movement, shape and other clinical factors before planning the next step.

The clinic offers advanced male fertility treatment services that may support men with low sperm count, azoospermia, poor sperm quality, raised DNA fragmentation, recurrent miscarriages, poor fertilisation rates or fertility preservation needs.

Male fertility services at Oval Fertility include PESA, TESA, Micro TESE, PICSI, Microfluidics, MACS, SpermSlow and Male OncoFertility. These treatments and techniques may be used depending on the diagnosis and the couple’s treatment plan.

This approach helps couples move beyond guesswork. With proper testing, advanced lab support and personalised fertility planning, male infertility can be addressed with clarity and dignity.

Dr. Sandeep Karunakaran
Dr. Sandeep Karunakaran
August 17, 2026
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