- Advanced Andrology
Male Infertility: Causes, Diagnosis and Advanced Treatment Options
Male infertility affects 40 to 50 percent of couples struggling to conceive and involves low sperm count, poor motility, abnormal morphology, DNA damage, or complete absence of sperm. At Samarth IVF, we provide thorough male fertility evaluation including advanced semen analysis, hormone testing, genetic screening, and surgical sperm retrieval. Treatment ranges from lifestyle optimisation and medications to ICSI and TESA or PESA, giving even azoospermic men a genuine path to biological fatherhood. Our 14 centres across India make expert male fertility care accessible nationwide.
Understanding Male Infertility
Male infertility is defined as the inability to cause pregnancy in a fertile female partner due to problems with sperm production, sperm function, or sperm delivery. It is far more common than widely acknowledged. Approximately 40 to 50 percent of all infertile couples have a male factor involved, either as the sole cause or combined with female factors. Yet male fertility evaluation is often delayed, overlooked, or approached as an afterthought. This leads to months of wasted female-focused treatments when the core issue lies with the male partner.
The stigma surrounding male infertility continues to delay diagnosis in India and globally. Many men avoid testing due to cultural perceptions linking fertility to masculinity. This attitude costs couples valuable time. Modern reproductive medicine is clear: male infertility is a medical condition like any other, with identifiable causes and effective treatments in the vast majority of cases. Early evaluation, accurate diagnosis, and targeted treatment give couples the best possible chance of success.
How Male Fertility Works
For conception to occur naturally, a man must produce adequate numbers of healthy sperm, the sperm must be properly formed and capable of forward swimming motion, the sperm must travel unobstructed from the testes through the reproductive tract, and they must successfully penetrate and fertilise the egg. Problems at any point in this chain can cause or contribute to infertility.
Sperm are produced in the testes through a process called spermatogenesis that takes approximately 74 days. Each sperm consists of a head containing the genetic material, a midpiece providing energy, and a tail enabling movement. Sperm quality is assessed through semen analysis, which evaluates count, motility, morphology, and other parameters. However, standard semen analysis has limitations and does not capture all dimensions of sperm health, particularly DNA integrity.
Primary vs. Secondary Male Infertility
Primary male infertility refers to men who have never fathered a child. Secondary male infertility refers to men who have previously fathered children but are now experiencing difficulty. Both are valid medical presentations requiring investigation. Sperm quality can change significantly over time due to age, illness, lifestyle changes, medications, or new medical conditions, so a previous normal result does not rule out a current problem.
Common Causes of Male Infertility
Male infertility arises from a wide range of causes affecting sperm production, sperm quality, or sperm transport. In many cases, more than one contributing factor is present. Identifying the specific cause is essential for directing treatment effectively.
Varicocele
A varicocele is an abnormal enlargement of the veins within the scrotum, similar to varicose veins in the legs. It is the single most common correctable cause of male infertility, found in 15 to 20 percent of all men and in 35 to 40 percent of men investigated for infertility. Varicoceles impair fertility by raising the temperature inside the scrotum, disrupting blood flow to the testes, and creating an accumulation of toxic metabolites. These effects damage sperm production and quality across all parameters: count, motility, and morphology.
Not all varicoceles require treatment. Clinical varicoceles associated with abnormal semen parameters in a couple with infertility are the primary indication for varicocele repair (varicocelectomy). Surgical or radiological repair can significantly improve semen parameters and restore natural fertility or improve IVF outcomes in properly selected patients.
Azoospermia (Zero Sperm Count)
Azoospermia is the complete absence of sperm in the ejaculate and is found in approximately 1 percent of all men and 10 to 15 percent of infertile men. It is classified into two main types, each with different causes and treatment implications.
- Obstructive Azoospermia (OA)
Sperm are produced normally in the testes but cannot reach the ejaculate due to a blockage in the reproductive tract. Causes include vasectomy, previous infections causing epididymal obstruction, congenital bilateral absence of the vas deferens (CBAVD, associated with cystic fibrosis gene mutations), and post-surgical scarring. Surgical sperm retrieval (PESA, TESA, or micro-TESE) reliably retrieves sperm for use with ICSI. Success rates are high.
- Non-Obstructive Azoospermia (NOA)
Sperm production is impaired or absent. Causes include Klinefelter syndrome, Y-chromosome microdeletions, previous chemotherapy or radiation, undescended testes, and idiopathic testicular failure. Micro-TESE (microsurgical testicular sperm extraction) can find pockets of sperm production in approximately 50 to 60 percent of men with NOA. When sperm are found, they are used with ICSI to create embryos.
Oligospermia (Low Sperm Count)
Oligospermia refers to a sperm concentration below 16 million per mL (WHO 2021 reference values). It is classified as mild (10 to 16 million per mL), moderate (5 to 10 million per mL), or severe (below 5 million per mL). The lower the count, the greater the impact on natural fertility and IUI, and the more strongly IVF with ICSI is indicated. Causes of oligospermia overlap significantly with causes of other semen abnormalities and include varicocele, hormonal disorders, genetic factors, lifestyle exposures, and medications.
Asthenospermia (Poor Sperm Motility)
Asthenospermia is defined as fewer than 42 percent of sperm showing any movement, or fewer than 30 percent showing progressive forward movement. Poorly motile sperm cannot swim effectively through the female reproductive tract to reach and fertilise the egg. Causes include oxidative stress, sperm DNA damage, structural tail defects, varicocele, infection, anti-sperm antibodies, and partial ejaculatory duct obstruction. IVF with ICSI bypasses the need for sperm to swim by directly injecting a single sperm into each egg.
Teratospermia (Abnormal Sperm Morphology)
Teratospermia is defined as fewer than 4 percent normal-form sperm by Kruger strict morphology criteria. Abnormal sperm shape affects the ability to penetrate the egg even when count and motility appear adequate. Severe morphology abnormalities, particularly globozoospermia (round-headed sperm without acrosome) and macrozoospermia (oversized sperm heads), carry additional implications for fertilisation and genetic integrity. ICSI is the treatment of choice for teratospermia.
Sperm DNA Fragmentation
Sperm DNA fragmentation refers to breaks or damage in the DNA strands within the sperm head. This is one of the most clinically significant yet underdiagnosed aspects of male infertility. A man can have a completely normal semen analysis, with good count, motility, and morphology, yet still have high DNA fragmentation that causes fertilisation failure, poor embryo development, recurrent miscarriage, and repeated IVF failure.
DNA Fragmentation Index (DFI) above 25 to 30 percent is considered clinically significant. Causes include oxidative stress from smoking, obesity, infections, fever, varicocele, and environmental toxin exposure. Treatment involves addressing modifiable causes, antioxidant supplementation (vitamin C, E, CoQ10, zinc, selenium), surgical sperm retrieval (testicular sperm has lower DNA fragmentation than ejaculated sperm in some cases), and ICSI with careful sperm selection.
Hormonal Disorders
Normal sperm production depends on a precisely coordinated hormonal cascade from the hypothalamus and pituitary gland to the testes. Disruptions at any level can impair spermatogenesis. Common hormonal causes include hypogonadotrophic hypogonadism (low FSH and LH from the pituitary, treatable with gonadotrophin injections), hyperprolactinaemia (elevated prolactin suppressing testosterone), thyroid disorders, and testosterone deficiency from other causes. Importantly, testosterone replacement therapy (TRT) and anabolic steroids shut down natural sperm production completely and can cause azoospermia. Men on TRT who wish to father children must stop TRT and use alternative hormonal stimulation.
Genetic Causes
Genetic abnormalities account for 15 to 30 percent of severe male infertility cases. Key genetic causes include:
Klinefelter syndrome (47,XXY):
The most common chromosomal cause of male infertility, causing small firm testes, low testosterone, and azoospermia. Micro-TESE retrieves sperm in approximately 50 percent of cases.
Y-chromosome microdeletions:
Deletions in the AZF (azoospermia factor) regions of the Y chromosome disrupt genes critical for sperm production. AZFa and AZFb deletions are associated with very poor or no sperm retrieval. AZFc deletions allow successful retrieval in many cases.
Congenital bilateral absence of the vas deferens (CBAVD):
Associated with cystic fibrosis gene mutations. Sperm are produced normally but cannot exit. PESA or TESA retrieves sperm successfully.
Chromosomal translocations:
Structural chromosomal rearrangements that reduce fertility and increase miscarriage risk. Preimplantation genetic testing (PGT-SR) during IVF can identify unbalanced embryos.
Obstruction of the Reproductive Tract
Beyond CBAVD and vasectomy, reproductive tract obstructions include epididymal obstruction from previous infection (especially chlamydia, gonorrhoea, or tuberculosis), ejaculatory duct obstruction causing low volume azoospermia, and post-surgical scarring from hernia repair, orchidopexy, or bladder neck surgery. Obstructions are often treatable surgically or bypassed through sperm retrieval for IVF-ICSI.
Retrograde Ejaculation
In retrograde ejaculation, semen enters the bladder instead of being propelled through the urethra during orgasm. Men notice little or no ejaculate and may have cloudy urine after orgasm. Causes include diabetes (autonomic neuropathy), spinal cord injury, previous bladder neck or prostate surgery, and certain medications including alpha-blockers. Sperm can be retrieved from post-ejaculatory urine after alkalinisation and used for IUI or IVF-ICSI.
Lifestyle and Environmental Factors
Multiple modifiable lifestyle and environmental factors significantly impact sperm quality:
Smoking:
Reduces sperm count, motility, and morphology while increasing DNA fragmentation. Cessation improves parameters within 3 months.
Alcohol:
Heavy consumption reduces testosterone and impairs sperm production. Moderate consumption has less clear effects but is best avoided during fertility treatment.
Anabolic steroids & supplements:
Completely suppress natural sperm production. Azoospermia is common. Recovery after cessation can take 6 to 24 months or longer.
Heat exposure:
Scrotal temperature must be 2 to 4 degrees below body temperature for optimal sperm production. Frequent hot baths, saunas, laptop use on the lap, tight underwear, and sedentary occupations involving prolonged sitting impair sperm production.
Recreational drugs:
Marijuana, cocaine, and opioids impair testosterone production and sperm parameters.
Obesity:
Increases scrotal temperature via fat deposition, elevates oestrogen levels, and reduces testosterone. Weight loss improves semen parameters.
Occupational exposures:
Pesticides, heavy metals, organic solvents, and radiation damage sperm production. Protective measures and occupational review are important.
Diagnosing Male Infertility at Samarth IVF
At Samarth IVF, male fertility evaluation is systematic, non-invasive to start, and progresses to advanced testing based on initial findings.
We do not stop at a basic semen analysis when results are borderline or when infertility persists despite apparently normal parameters.
Semen Analysis
The foundational test. Evaluates sperm count, motility, morphology, volume, liquefaction, and pH based on WHO 2021 reference criteria. Sample produced after 2 to 5 days of abstinence.
Sperm DNA Fragmentation Index (DFI)
Measures percentage of sperm with damaged DNA. Recommended for unexplained infertility, recurrent miscarriage, and repeated IVF failure with apparently normal semen parameters.
Hormone Blood Panel
FSH, LH, testosterone, prolactin, and TSH. Distinguishes hormonal from primary testicular causes and identifies treatable hormonal abnormalities.
Scrotal Ultrasound
Identifies varicoceles, testicular masses, absent or obstructed vas deferens, and epididymal abnormalities. Essential when physical examination is abnormal or semen parameters are significantly reduced.
Genetic Testing
Chromosomal karyotype, Y-chromosome microdeletion analysis, and CFTR mutation testing for CBAVD. Recommended for azoospermia, severe oligospermia (below 5 million per mL), or recurrent miscarriage.
Post-Ejaculatory Urinalysis
For men with very low ejaculate volume and suspected retrograde ejaculation. Confirms presence of sperm in urine after orgasm.
Testicular Biopsy
For azoospermic men. Determines whether sperm production is occurring and whether sperm can be retrieved for IVF-ICSI.
Treatment Options for Male Infertility at Samarth IVF
Treatment is always guided by the specific diagnosis. At Samarth IVF, we match the treatment precisely to the cause and severity of male factor infertility.
1. Lifestyle Optimisation
For many men, targeted lifestyle changes produce meaningful improvements in semen parameters within 3 months (one full cycle of spermatogenesis). Cessation of smoking, reducing alcohol, stopping anabolic steroids, weight loss in overweight men, reducing scrotal heat exposure, correcting nutritional deficiencies, and antioxidant supplementation are all evidence-based first steps. For men with mild semen abnormalities and no identifiable medical cause, a 3-month lifestyle optimisation period is worthwhile before proceeding to assisted reproduction.
2. Medical Treatment
Hormonal causes of male infertility are highly treatable. Hypogonadotrophic hypogonadism responds well to gonadotrophin injections (FSH and hCG), which stimulate the testes to produce sperm. Hyperprolactinaemia is treated with cabergoline or bromocriptine, often restoring normal sperm production. Thyroid disorders are managed with appropriate medication. Infections are treated with antibiotics, though damage from previous infections may be permanent.
3. Varicocele Repair (Varicocelectomy)
Varicocelectomy is performed microsurgically (microsurgical subinguinal varicocelectomy), which has the best outcomes and lowest recurrence and complication rates. Studies consistently show improvement in sperm count, motility, and morphology in approximately 60 to 70 percent of men following repair. Some men recover sufficient sperm parameters for natural conception or IUI. For others, improved sperm quality translates to better IVF-ICSI outcomes. The decision to proceed with varicocelectomy versus direct IVF-ICSI depends on semen parameters, female partner factors, and duration of infertility.
4. IUI (Intrauterine Insemination)
IUI is appropriate for mild male factor infertility where the total motile sperm count after preparation is sufficient (generally above 5 to 10 million). Prepared sperm are placed directly into the uterus at ovulation, increasing the concentration of sperm near the egg. Success rates per cycle are 10 to 20 percent in well-selected couples. IUI is typically tried for 3 to 6 cycles before advancing to IVF if pregnancy has not occurred.
5. IVF with ICSI (Intracytoplasmic Sperm Injection)
ICSI is the cornerstone of advanced male infertility treatment. A single sperm is selected by the embryologist and injected directly into each mature egg, bypassing all natural barriers to fertilisation. ICSI achieves fertilisation rates of 70 to 85 percent per egg and is used for severe oligospermia, poor motility, significant teratospermia, previous IVF fertilisation failure, and all cases of surgically retrieved sperm. It has transformed the prognosis for severe male factor infertility, giving men who would previously have had no options a realistic path to biological fatherhood.
6. Surgical Sperm Retrieval
For men with azoospermia or very severe oligospermia, sperm can be retrieved surgically and used immediately with ICSI or frozen for future use.
7. Vasectomy Reversal
Men who underwent vasectomy and now wish to father children have two options: vasectomy reversal (vasovasostomy or vasoepididymostomy) to restore natural sperm flow, or PESA or TESA to retrieve sperm for IVF-ICSI. The choice depends on time since vasectomy, female partner age and fertility, and cost considerations. Vasectomy reversal success is inversely related to the time elapsed since vasectomy.
8. Donor Sperm
When sperm retrieval is not possible or when genetic testing reveals conditions that carry significant risk of transmission, donor sperm from a certified sperm bank is a highly effective alternative. Donor sperm is screened thoroughly for infectious diseases, genetic conditions, and health history. It provides success rates equivalent to partner sperm of comparable quality for the same procedures.
Male Infertility Treatment Across Samarth IVF Centres in India
Samarth IVF provides complete male fertility evaluation and treatment across all 13 centres in India. Expert male fertility care is available wherever you are.
Semen analysis, hormone testing, and initial male fertility evaluation are available at all centres. Advanced procedures including micro-TESE, PESA, MESA, and varicocelectomy are performed at our main centres with full surgical infrastructure.
Sambhajinagar (Aurangabad), Maharashtra: Main HQ with full surgical and IVF facilities, plus 2 Level-1 Centres
Washim, Maharashtra | Buldhana, Maharashtra | Parbhani, Maharashtra | Omerga (Umarga), Maharashtra | Gondia, Maharashtra
Dehradun, Uttarakhand | Jamnagar, Gujarat | Kalaburagi (Gulbarga), Karnataka | Bhopal, Madhya Pradesh | Farrukhabad, Uttar Pradesh | Lucknow, Uttar Pradesh
Why Choose Samarth IVF for Male Infertility Treatment
Dedicated andrology expertise: our specialists are trained specifically in male reproductive medicine, not general urology.
Advanced semen analysis with WHO 2021 criteria: precise, standardised reporting with morphology assessed by Kruger strict criteria.
Sperm DNA fragmentation testing available: identifying hidden causes of infertility that basic semen analysis misses.
Full range of surgical sperm retrieval: PESA, TESA, MESA, and micro-TESE performed by experienced reproductive surgeons.
Integrated IVF-ICSI programme: seamless pathway from diagnosis to treatment within the same centre.
Genetic counselling: chromosomal and genetic testing with specialist interpretation and counselling on implications for treatment and offspring.
14 centres across India: accessible expert male fertility care across Maharashtra, Gujarat, Madhya Pradesh, Uttar Pradesh, Uttarakhand, and Karnataka.
Judgment-free, confidential consultations: we understand the sensitivity of male fertility concerns and provide a respectful, private environment.
- FAQ
FREQUENTLY ASKED QUESTIONS
Varicocele is the single most common identifiable and correctable cause of male infertility, found in 35 to 40 percent of infertile men. Other common causes include low sperm count, poor motility, abnormal morphology, hormonal disorders, and genetic conditions. In many cases, multiple contributing factors are present simultaneously. Comprehensive evaluation is essential to identify all contributing causes rather than stopping at the first abnormality found.
Yes, in many cases. With obstructive azoospermia, sperm retrieval through PESA or TESA is highly successful and the retrieved sperm are used with ICSI to create embryos. With non-obstructive azoospermia, micro-TESE finds sperm in approximately 50 to 60 percent of cases including men with Klinefelter syndrome. When sperm are retrieved, ICSI success rates are comparable to other forms of severe male factor infertility.
No. Standard semen analysis evaluates count, motility, and morphology but does not assess sperm DNA integrity. High DNA fragmentation can cause fertilisation failure, poor embryo quality, and recurrent miscarriage even when standard parameters are completely normal. Men with unexplained infertility, recurrent miscarriage, or repeated IVF failure despite normal semen reports should have sperm DNA fragmentation testing performed.
Spermatogenesis (sperm production) takes approximately 74 days, meaning changes in lifestyle or treatment will show their effect in semen analysis after about 3 months. Stopping smoking, losing weight, correcting nutritional deficiencies, and starting antioxidant supplements typically require a full 3-month period before reassessment. Some changes such as stopping anabolic steroids may take 6 to 24 months for full recovery.
Yes. ICSI is the standard treatment for all forms of significant male factor infertility. In regular IVF, sperm must independently penetrate the egg, which requires adequate motility and morphology. In ICSI, a single sperm is directly injected into each egg, bypassing all natural barriers to fertilisation. ICSI achieves fertilisation rates of 70 to 85 percent per egg even with severely abnormal sperm parameters.
Yes, and treatment can significantly improve outcomes. For modifiable causes, stopping smoking, losing weight, treating infections, varicocele repair, and antioxidant supplementation (vitamin C, E, CoQ10, zinc, selenium) reduce DNA fragmentation over 3 months. In cases where DNA fragmentation remains high despite these measures, using testicular sperm (via TESA) instead of ejaculated sperm for ICSI often produces lower fragmentation levels and better embryo outcomes.
Not always, but it does in approximately 60 to 70 percent of properly selected cases. Men most likely to benefit have clinical varicocele (detectable on examination), abnormal semen parameters, and a partner with normal or near-normal fertility. Men with subclinical varicoceles (only detectable on ultrasound) or with advanced non-obstructive azoospermia from other causes are less likely to benefit. Your Samarth IVF specialist will assess whether varicocelectomy or direct IVF-ICSI is the more efficient path for your specific situation.
Yes, and this is one of the most common preventable causes of male infertility. Testosterone replacement therapy (TRT) and anabolic steroids suppress FSH and LH production from the pituitary, shutting down the hormonal signal to the testes that drives sperm production. Azoospermia develops within weeks to months of starting TRT. Recovery after stopping TRT can take 6 to 24 months and is not guaranteed. Men on TRT who wish to father children should discuss stopping and switching to fertility-preserving hormonal options with their doctor.
ICSI fertilisation rates are 70 to 85 percent per egg. Pregnancy rates per embryo transfer with ICSI are equivalent to standard IVF for the same age group: approximately 40 to 55 percent per transfer for women under 35 and 25 to 40 percent for women aged 35 to 40. When sperm are surgically retrieved for ICSI, outcomes are similar to ejaculated sperm of comparable quality. Overall, ICSI has transformed the prognosis for severe male factor infertility, with outcomes that were unachievable just 30 years ago.
Yes. Semen analysis, sperm DNA fragmentation testing, hormone blood panel, and initial male fertility consultation are available at all 14 Samarth IVF centres. Advanced procedures including surgical sperm retrieval (PESA, TESA, micro-TESE), varicocelectomy, and IVF-ICSI are performed at our main centres with full surgical and IVF laboratory infrastructure. Your treating doctor will guide you on where each component of your treatment plan will be carried out.
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