When a couple struggles to conceive, the conversation often centres on the woman — her cycles, her hormones, her ovarian reserve. But male infertility causes nearly 50% of all infertility cases globally, and in India, the numbers are sobering: studies indicate that only about one in four Indian men meets normal semen parameters, and average sperm counts have fallen by an estimated two-thirds over the past three decades.

This is not a fringe problem. It is a silent, rising public health issue — and one that remains significantly under-discussed in clinical settings. This article breaks down the real male infertility causes, what affects sperm health, and when couples should stop waiting and seek professional evaluation.

Understanding Male Infertility: The Basics

Male infertility is defined as the inability to father a biological child after 12 months of regular, unprotected intercourse. It is almost always diagnosed through a semen analysis — a test that evaluates three core parameters:

Parameter	Normal Range (WHO 2021)	What It Means
Sperm concentration	≥16 million/mL	Number of sperm per ejaculate
Sperm motility	≥42% total motility	Percentage that can swim
Sperm morphology	≥4% normal forms	Percentage of normal shape

Abnormalities in one or more of these parameters are the most common finding in infertile men. The condition is classified as:

• Oligospermia — low sperm count (below 16 million/mL)
• Asthenospermia — poor sperm motility
• Teratospermia — abnormal sperm shape/morphology
• Azoospermia — complete absence of sperm in ejaculate (affects ~1% of all men and ~10–15% of infertile men)

The Main Male Infertility Causes

1. Varicocele — The Most Treatable Cause

Varicocele is an abnormal enlargement of veins within the scrotum — essentially varicose veins of the testicles. It is found in approximately 40% of men with primary infertility and up to 80% of those with secondary infertility (inability to conceive again after a previous pregnancy).

It reduces sperm health by raising scrotal temperature and impairing blood flow, which damages sperm production and DNA integrity. Crucially, varicocele repair (varicocelectomy) is one of the most effective surgical interventions in male infertility, with evidence showing significant improvement in sperm count and motility post-correction.

2. Hormonal Imbalances

The hypothalamic-pituitary-gonadal (HPG) axis controls testosterone and sperm production. Disruptions anywhere in this chain affect fertility:

• Low testosterone directly reduces sperm production
• Elevated prolactin suppresses the pituitary signals that drive sperm development
• Low anti-Müllerian hormone (AMH) in men has been linked to higher sperm DNA fragmentation — a relatively recent finding from a 2025 Indian study (Oncoscience)
• Thyroid disorders — both hypo- and hyperthyroidism — can impair sperm motility and morphology

3. Lifestyle Factors: The Modifiable Causes

A 2025 study published in Oncoscience of 278 Indian men aged 21–50 found strong associations (p < 0.001) between lifestyle factors and poor semen parameters:

• Tobacco use — reduced sperm concentration, motility, and morphology
• Alcohol consumption — reduced sperm quality and increased DNA fragmentation
• Obesity/underweight — both extremes associated with lower semen quality and greater DNA damage
• Occupational heat exposure — men in high-temperature work environments had significantly more sperm DNA damage

Chronic psychological stress — increasingly prevalent in urban India’s working population — is also independently associated with reduced testosterone and worsened semen quality.

4. Infections and Obstructions

Past or current infections can impair sperm production or block the reproductive tract:

• Mumps orchitis — a mumps infection that reaches the testicles can cause irreversible testicular damage
• Sexually transmitted infections (STIs) such as chlamydia and gonorrhoea can cause epididymal scarring, leading to obstructive azoospermia
• Tuberculosis — still relevant in India — can affect the genitourinary tract

5. Genetic Causes

• Klinefelter syndrome (47,XXY) — the most common genetic cause of male infertility
• Y chromosome microdeletions — affect ~10–15% of men with severe oligospermia or azoospermia
• Cystic fibrosis gene mutations — associated with absence of the vas deferens (congenital bilateral absence of the vas deferens, CBAVD)

Genetic causes cannot be treated but are important to diagnose — both for understanding prognosis and for counselling couples about assisted reproduction options.

6. Environmental and Occupational Exposures

Endocrine-disrupting chemicals (EDCs) — found in plastics (BPA), pesticides, industrial solvents, and certain personal care products — interfere with hormone signalling and reduce low sperm count and motility. Heavy metal exposure (lead, cadmium, mercury) and excessive radiation also fall in this category.

What Tests Diagnose Male Infertility?

Test	What It Detects
Semen analysis	Sperm count, motility, morphology
Sperm DNA Fragmentation Index (DFI)	Hidden DNA damage in sperm
Hormonal panel (FSH, LH, testosterone, prolactin, TSH)	Hormonal causes
Scrotal ultrasound	Varicocele, testicular abnormalities
Genetic karyotyping / Y-deletion	Chromosomal causes
Post-ejaculate urinalysis	Retrograde ejaculation

A basic semen analysis is the starting point — but a normal result does not fully rule out male factor issues. Sperm DNA fragmentation can be elevated even when count and motility appear normal, and this is increasingly recognised as a cause of unexplained infertility and recurrent miscarriage.

Male Infertility Treatment in India: What Are the Options?

Many causes of male infertility are reversible or manageable:

• Varicocele repair — can improve sperm parameters significantly in 50–70% of cases
• Hormonal therapy — corrects hypogonadism, elevated prolactin, thyroid disorders
• Lifestyle changes — quitting tobacco, reducing alcohol, weight normalisation, stress management
• Antibiotics — treat underlying genital tract infections
• Surgical sperm retrieval (TESA/PESA) + IVF/ICSI — for obstructive or non-obstructive azoospermia
• ICSI (Intracytoplasmic Sperm Injection) — fertilises an egg with a single sperm, making it the primary ART solution when sperm count or motility is severely impaired

Male infertility treatment in India has advanced significantly — couples no longer have to resign themselves to IVF as the only route. The right treatment depends entirely on the underlying cause, which is why proper diagnosis comes first.

When Should You Seek Help?

Situation	Recommended Action
Trying to conceive for 12+ months (under 35)	Consult a fertility specialist — both partners
Trying to conceive for 6+ months (35 or older)	Seek evaluation sooner
Known risk factors (varicocele, past infection, low testosterone)	Don’t wait 12 months — consult early
History of testicular injury, orchitis, or surgery	Proactive semen analysis recommended
Recurrent miscarriage (even with confirmed pregnancies)	Sperm DNA fragmentation testing warranted

Male infertility is not a reflection of masculinity or overall health — it is a medical condition with identifiable causes and, in most cases, workable solutions. The sooner it is evaluated, the more options remain available.

Consult a Fertility Specialist in Malad West, Mumbai

If you and your partner have been trying to conceive without success, or if you have any of the risk factors above, a comprehensive fertility evaluation — including semen analysis for the male partner — is the right first step.

Dr. Shernaz Damkevala (Dastur) provides evidence-based fertility consultations at Ahura Nursing Home, Malad West, Mumbai. As a fertility specialist in Malad West with extensive experience in both female and couple-level infertility workups, Dr. Shernaz can guide you through the right diagnostic pathway and connect you with specialist care for the male factor when indicated.

Also explore: Fertility Services | IVF & Assisted Reproduction | PCOS Management | Egg Freezing

FAQs 

Q1. What are the most common male infertility causes?

A: The most common causes are varicocele, low sperm count (oligospermia), hormonal imbalances, lifestyle factors (smoking, alcohol, obesity), and infections that cause obstructions.

Q2. What is a normal sperm count?

A: Per WHO 2021 guidelines, a normal sperm concentration is ≥16 million per millilitre. Below this is classified as oligospermia.

Q3. What is azoospermia?

A: Azoospermia is the complete absence of sperm in semen. It affects about 1% of all men and 10–15% of infertile men. It can be obstructive (blockage) or non-obstructive (production failure).

Q4. Can low sperm count be treated?

A: Yes. Depending on the cause, low sperm count can be treated with lifestyle changes, hormonal therapy, varicocele surgery, or assisted reproduction (IVF/ICSI).

Q5. Does smoking affect male fertility?

A: Yes. Tobacco use is strongly associated with reduced sperm concentration, motility, and morphology, as well as increased sperm DNA fragmentation.

Q6. What is a semen analysis test?

A: It is a lab test that evaluates sperm count, motility, morphology, and semen volume. It is the first and most important test for male infertility evaluation.

Q7. What is sperm DNA fragmentation?

A: It is damage to the genetic material within sperm. High DNA fragmentation can cause failed fertilisation, poor embryo quality, and recurrent miscarriage — even when the basic semen analysis appears normal.

Q8. How long should couples try before seeking help?

A: If under 35, try for 12 months before consulting. If over 35, or if there are known risk factors (varicocele, infections, hormonal issues), seek evaluation after 6 months or sooner.

Q9. Is male infertility treatment available in India?

A: Yes. Male infertility treatment in India includes hormonal therapy, varicocele repair, antibiotics for infections, and surgical sperm retrieval with IVF/ICSI for severe cases.

Q10. Can stress cause male infertility?

A: Chronic stress reduces testosterone levels and has been associated with poorer semen quality. While it is rarely the sole cause, it is a meaningful contributing factor.

CITATIONS & REFERENCES

1. Medical Dialogues (2025) — Male infertility in Indian men linked to lifestyle choices and hormonal imbalances — https://medicaldialogues.in/amp/medicine/news/male-infertility-in-indian-men-linked-to-lifestyle-choices-and-hormonal-imbalances-study-156791
2. Omnicuris (2026) — The Male Infertility Crisis: Understanding India’s Silent Shift — https://www.omnicuris.com/medshots/daily_updates/male-infertility-trends-india-semen-parameters
3. The Quint (2025) — ‘Lifestyle Factors, Delayed Fatherhood’: Why Male Infertility Is Rising in India — https://thequint.com/fit/male-infertility-increasing-incidence-in-india-what-causes-it-explained
4. Frontiers in Reproductive Health (2025) — Male factor infertility study — https://public-pages-files-2025.frontiersin.org/journals/reproductive-health/articles/10.3389/frph.2025.1697925/epub
5. WHO (2021) — WHO Laboratory Manual for the Examination and Processing of Human Semen, 6th Edition — https://www.who.int/publications/i/item/9789240030787
6. Urological Society of India — Male Infertility Guidelines — https://medicaldialogues.in/urology/guidelines/male-infertility-urological-society-of-india-guidelines-108542

Most women who receive a PCOS diagnosis are told about two things: their irregular periods and their chances of getting pregnant. Both matter — but they are not the whole story.

PCOS is a lifelong metabolic and endocrine condition. It does not switch off after your reproductive years, and it does not limit its effects to your ovaries. Left unmanaged, PCOS significantly elevates your lifetime risk of developing Type 2 diabetes, cardiovascular disease, endometrial cancer, sleep apnoea, depression, and more — conditions that have nothing to do with fertility and everything to do with how long, and how well, you live.

In India, where PCOS prevalence is estimated at 26% of women of reproductive age — one in four — and awareness of its metabolic consequences remains low, this conversation is overdue.

(Note: PCOS was officially renamed PMOS — Polyendocrine Metabolic Ovarian Syndrome — in May 2026. The renaming itself reflects this very issue: the condition is far more than an ovarian problem. Both terms refer to the same condition. Read our full breakdown of the name change.)

The Root of It All: PCOS and Insulin Resistance

Before discussing individual risks, one mechanism connects almost all of them: PCOS insulin resistance.

Up to 70% of women with PCOS have insulin resistance — a state in which the body’s cells do not respond effectively to insulin. The pancreas compensates by producing more insulin, leading to chronically elevated insulin levels in the blood. This excess insulin then stimulates the ovaries to produce more androgens (male hormones), which disrupts ovulation and drives many of the visible symptoms of PCOS — acne, hair changes, weight gain, and irregular cycles.

But the cascade does not stop there. High insulin levels also disrupt lipid metabolism, raise blood pressure, promote abdominal fat storage, and over time, exhaust the pancreas’s capacity to compensate — setting the stage for the metabolic risks below.

A South Indian study of young women with PCOS found that 41% of those with an average age of 22 already met the criteria for metabolic syndrome — compared to none in the control group. These are women in their early 20s. The window for intervention is now, not at 45.

Risk 1: Type 2 Diabetes

PCOS and diabetes risk are inseparably linked. Women with PCOS are three to eight times more likely to develop Type 2 diabetes compared to women without the condition — and in India, where insulin resistance and diabetes already have among the highest prevalence rates globally, this risk is amplified further.

The progression typically runs: insulin resistance → impaired glucose tolerance (pre-diabetes) → Type 2 diabetes. Many women with PCOS are already in the pre-diabetes stage years before a formal diabetes diagnosis, without knowing it — because blood sugar screening is not routinely included in standard PCOS management in India.

What to monitor: Fasting blood glucose and HbA1c at diagnosis and annually. Oral glucose tolerance test (OGTT) if fasting glucose is borderline. Earlier and more frequent screening if you have a family history of diabetes or are overweight.

Risk 2: Cardiovascular Disease

PCOS and heart disease are connected through multiple pathways — insulin resistance, elevated androgens, dyslipidaemia (abnormal cholesterol and triglyceride levels), and hypertension.

Women with PCOS characteristically have a lipid profile that raises cardiovascular risk: lower HDL (the protective cholesterol), higher LDL and triglycerides. Combined with hypertension — also more common in PCOS — and the chronic low-grade inflammation that accompanies insulin resistance, the cardiovascular risk picture is significant.

Experts note that heart disease is rising among young, premenopausal women in India, and PCOS — with its metabolic burden — is a key driver. Women with PCOS are estimated to have a cardiovascular disease risk 4 to 7 times higher than age-matched women without it.

What to monitor: Blood pressure at every consultation. Fasting lipid panel (total cholesterol, HDL, LDL, triglycerides) at diagnosis and annually. Waist circumference — a strong independent predictor of cardiovascular risk in PCOS.

Risk 3: Metabolic Syndrome

PCOS metabolic syndrome is not a single condition — it is a cluster of concurrent risk factors that, together, dramatically raise the risk of heart disease and diabetes. A woman is considered to have metabolic syndrome if she has three or more of:

• Abdominal obesity (waist circumference >80 cm for Indian women)
• Elevated triglycerides
• Low HDL cholesterol
• High blood pressure
• Elevated fasting blood sugar

Women with PCOS are at significantly higher risk of developing metabolic syndrome — and as the South Indian study above showed, this can begin in the early 20s. Management of metabolic syndrome in PCOS is primarily lifestyle-based, with targeted medication where needed.

Risk 4: Endometrial Cancer

This is the risk that surprises most women — and their doctors.

In a normal cycle, ovulation triggers progesterone production, which counterbalances oestrogen and causes the uterine lining to shed. In PCOS, irregular or absent ovulation means the lining is repeatedly exposed to oestrogen without the protective effect of progesterone. Over time, this unopposed oestrogen exposure leads to endometrial hyperplasia — thickening of the uterine lining — which, if untreated, can progress to endometrial cancer.

Women with PCOS face an approximately threefold increased risk of endometrial cancer compared to women without the condition.

What helps: Regular periods — whether natural or induced with hormonal treatment — protect the endometrial lining. Women with PCOS who have fewer than four periods per year should discuss endometrial protection with their gynaecologist.

Risk 5: Sleep Apnoea

PCOS sleep apnoea is significantly underdiagnosed. Women with PCOS are five to ten times more likely to develop obstructive sleep apnoea (OSA) — a condition in which breathing repeatedly stops during sleep — than women without PCOS, even after controlling for weight.

The drivers include elevated androgens (which affect upper airway muscle tone), central obesity, and insulin resistance. What makes this particularly concerning is that OSA further worsens insulin resistance and cardiovascular risk — creating a negative feedback loop. Research has also found that women with PCOS who have OSA are approximately 2.5 times more likely to have moderate-to-severe depression or anxiety.

Symptoms to watch for: Loud snoring, waking unrefreshed despite adequate sleep, excessive daytime fatigue, morning headaches, or a partner reporting pauses in your breathing. These warrant a sleep study (polysomnography) referral.

Risk 6: Mental Health — Depression, Anxiety, and Beyond

The PCOS mental health burden is one of the most under-addressed aspects of the condition.

A 2025 systematic review and meta-analysis published in Frontiers in Global Women’s Health found that depression affected 51% of women with PCOS in low- and middle-income countries, and anxiety affected 45%. In Indian women specifically, the figures were even higher: 55% depression, 51% anxiety — predominantly among women aged 20–25.

These are not coincidental associations. The hormonal environment of PCOS (elevated androgens, disrupted cortisol regulation), the physical symptoms that affect appearance and self-image (hair loss, acne, weight gain), the fertility anxiety, and the chronic uncertainty of an often poorly-explained diagnosis all contribute to significant psychological burden.

An Indian study published in January 2026 confirmed that women with PCOS had significantly lower quality of life and higher rates of somatisation, anxiety, and psychological distress compared to healthy controls — and called for integrated mental health care as a standard component of PCOS management.

What this means: A PCOS consultation that does not include a conversation about mood, sleep, and mental wellbeing is incomplete. If you are struggling emotionally alongside the physical symptoms of PCOS, this is clinically relevant and deserves direct attention.

Risk 7: Non-Alcoholic Fatty Liver Disease (NAFLD)

An emerging area of research is the link between PCOS and non-alcoholic fatty liver disease — a condition in which fat accumulates in the liver independent of alcohol consumption. Insulin resistance drives fat deposition in liver cells, and PCOS patients — particularly those with elevated androgens and central obesity — have a significantly higher prevalence of NAFLD. This connection is particularly relevant for Indian women, who have a genetic predisposition to visceral fat accumulation and NAFLD.

The PCOS Screening You Actually Need

Most of these risks are detectable early — and early detection changes outcomes. If you have PCOS, the following screening should be part of your regular care:

What to Screen	How Often
Fasting blood glucose and HbA1c	At diagnosis, then annually
OGTT (if fasting glucose borderline)	As advised by your doctor
Fasting lipid panel	At diagnosis, then annually
Blood pressure	Every consultation
Waist circumference	Every consultation
Endometrial thickness (if < 4 periods/year)	Transvaginal ultrasound — annually
Mood and mental health assessment	Every consultation — ask to be asked
Sleep assessment (OSA)	If fatigue/snoring symptoms present
Liver function tests / liver ultrasound	If central obesity or elevated enzymes

This is not an exhaustive medical protocol — it is a starting point for the conversation you should be having with your doctor.

PCOS Is Manageable — But Only If It Is Managed

None of the risks above are inevitable. Lifestyle modification — a low-glycaemic diet, regular exercise, adequate sleep, stress management — addresses insulin resistance directly and reduces the downstream metabolic cascade. Medication (metformin, hormonal regulation, targeted treatment) adds support where lifestyle alone is insufficient.

But management requires awareness. And awareness requires someone telling you — clearly, at the time of diagnosis — that PCOS is not just a period problem.

Dr. Shernaz Damkevala (Dastur) provides comprehensive PCOS/PMOS management at Ahura Nursing Home, Malad West, Mumbai — including hormonal assessment, metabolic screening, mental health discussion, and long-term health planning tailored to your individual risk profile.

If fertility is part of your concern alongside metabolic management, read How PCOS Affects Fertility. If you recently heard about the PCOS name change to PMOS, our complete explainer has the details.

Also explore: Fertility Services | Gynaecology | Maternity Care

FAQs

Q1. Does PCOS increase the risk of Type 2 diabetes?

A: Yes significantly. Women with PCOS are three to eight times more likely to develop Type 2 diabetes, driven by insulin resistance. Annual blood glucose and HbA1c screening is essential for all women with PCOS.

Q2. How does PCOS affect heart health?

A: PCOS raises cardiovascular risk through insulin resistance, elevated androgens, abnormal cholesterol levels (high LDL/triglycerides, low HDL), and high blood pressure. Women with PCOS have an estimated 4–7 times higher cardiovascular disease risk than women without it.

Q3. What is metabolic syndrome and how is it linked to PCOS?

A: Metabolic syndrome is a cluster of conditions — abdominal obesity, high blood pressure, high blood sugar, high triglycerides, and low HDL — that together raise the risk of diabetes and heart disease. Women with PCOS are at significantly higher risk, and it can develop as early as the 20s.

Q4. Can PCOS cause endometrial cancer?

A: PCOS increases endometrial cancer risk approximately threefold. Infrequent ovulation means the uterine lining is repeatedly exposed to oestrogen without the protective progesterone that follows ovulation. Women with fewer than four periods per year need endometrial monitoring and protection.

Q5. Is sleep apnoea more common in women with PCOS?

A: Yes — women with PCOS are five to ten times more likely to develop obstructive sleep apnoea, even after controlling for weight. Elevated androgens and insulin resistance both contribute. OSA in PCOS further worsens cardiovascular and mental health risks.

Q6. Does PCOS cause depression and anxiety?

A: Research consistently shows high rates of depression (51%) and anxiety (45%) among women with PCOS. In Indian women specifically, rates are even higher — 55% and 51% respectively among women aged 20–25. PCOS management should routinely include mental health assessment.

Q7. What blood tests should I get if I have PCOS?

A: Fasting blood glucose, HbA1c, fasting lipid panel, blood pressure, and waist circumference at diagnosis and annually. OGTT if fasting glucose is borderline. Liver function tests and liver ultrasound if central obesity is present. Discuss with your gynaecologist.

Q8. Does PCOS affect the liver?

A: Yes. Women with PCOS have a higher prevalence of non-alcoholic fatty liver disease (NAFLD), driven by insulin resistance and central obesity. This is particularly relevant for Indian women who are genetically predisposed to visceral fat accumulation and NAFLD.

Q9. If I manage my PCOS well, do these risks go away?

A: Effective management — lifestyle modification, metabolic screening, and targeted medication — significantly reduces all these risks. They are not inevitable; they are preventable with proactive care. Early intervention produces the best long-term outcomes.

CITATIONS & REFERENCES

1. Atinga A et al. — Depression and anxiety among women with PCOS in low- and middle-income countries: a systematic review and meta-analysis — Frontiers in Global Women’s Health, November 2025 — https://www.frontiersin.org/articles/10.3389/fgwh.2025.1688913/full
2. Anjana KS et al. — Beyond the Physical: Mental Health and Quality of Life in Women with PCOS — Journal of the Indian Academy of Applied Psychology, January 2026 — https://jiaap.in/blog/beyond-the-physical-mental-health-and-quality-of-life-in-women-with-polycystic-ovarian-syndrome-pcos
3. DiabEndoIndia, Chennai — Prevalence of Metabolic Syndrome in Young PCOS Women in South India — Endocrine Abstracts, ECE 2022 — https://www.endocrine-abstracts.org/ea/0081/ea0081ep417
4. Biovoice News — 70% Surge Observed in PCOS Cases in the Last Five Years (India data, 26% prevalence cited) — https://biovoicenews.com/70-surge-observed-in-pcos-cases-in-the-last-five-years-warns-expert/
5. Siasat Daily / IANS — Heart Diseases Rising Among Young, Premenopausal Indian Women — Apollo Hospitals expert commentary — https://www.siasat.com/heart-diseases-rising-among-young-premenopausal-indian-women-2-3105024
6. Zhou DX et al. — Sleep Apnoea Correlates with Anxiety and Depression in PCOS Patients — ASRM 2020 Abstract O-146 — https://mdedge.com/content/sleep-apnea-may-correlate-anxiety-depression-patients-pcos