Male infertility is responsible for nearly 40% to 50% of infertility cases among couples, according to the World Health Organization (WHO). Male fertility problems often occur when sperm count is low, sperm movement is poor, or sperm quality is affected. These conditions may lower the likelihood of conceiving naturally.
Many men do not notice any obvious symptoms. A fertility evaluation often becomes necessary after a couple has tried to conceive for 12 months without success. Understanding the causes of male infertility can help couples seek the right treatment at the right time.
What Is Male Infertility?
Male infertility is the inability of a man to contribute to pregnancy after regular unprotected intercourse for at least 12 months.
A healthy pregnancy depends on adequate sperm production, normal sperm movement, and successful delivery of sperm to the egg. Problems affecting any of these stages can reduce fertility.
According to WHO laboratory guidelines updated in 2021, semen quality remains one of the most important indicators of male reproductive health.
Male infertility may result from:
- Low sperm count
- Poor sperm motility
- Abnormal sperm shape
- Hormonal disorders
- Genetic conditions
- Blockages in the reproductive tract
- Lifestyle-related factors
Early diagnosis can identify the underlying cause and improve treatment outcomes.
What Is Low Sperm Count?
Low sperm count means the semen contains fewer sperm than required for optimal fertilization.
The WHO 2021 reference value considers a sperm concentration below 16 million sperm per milliliter as lower than normal. A lower sperm count reduces the likelihood that sperm will reach and fertilize the egg.
Low sperm count may be temporary or long-term. Some men experience a gradual decline due to age, lifestyle habits, or medical conditions.
Common Signs Associated With Low Sperm Count
- Difficulty achieving pregnancy
- Reduced sexual desire
- Erectile dysfunction
- Testicular discomfort
- Hormonal imbalance symptoms
Many men with low sperm count experience no visible symptoms. A semen analysis remains the most reliable diagnostic test.
What Is Poor Sperm Motility?
Poor sperm motility means sperm are unable to swim efficiently toward the egg.
Sperm movement plays a major role in natural conception. Even when sperm count is normal, poor motility can make fertilization difficult.
Progressive motility refers to sperm moving actively in a forward direction. Reduced progressive motility decreases the likelihood of successful fertilization.
Types of Sperm Motility Problems
| Type | Description |
| Progressive Motility | Forward-moving sperm |
| Non-Progressive Motility | Movement without forward progress |
| Immotile Sperm | No movement |
Semen analysis helps determine motility levels and identify fertility concerns.
What Causes Low Sperm Count?
Low sperm count can result from medical, hormonal, genetic, and lifestyle factors.
Several conditions interfere with sperm production inside the testes. Some causes are treatable. Others require assisted reproductive techniques.
Medical Causes
- Varicocele
- Testicular infections
- Mumps after puberty
- Undescended testicles
- Previous reproductive surgery
Hormonal Causes
- Low testosterone
- Pituitary gland disorders
- Thyroid dysfunction
Lifestyle Causes
- Smoking
- Excessive alcohol use
- Recreational drug use
- Obesity
- Poor diet
Environmental Causes
- Exposure to pesticides
- Industrial chemicals
- Heavy metals
- Radiation exposure
Determining the underlying cause is crucial for choosing the most appropriate treatment.
What Causes Poor Sperm Motility?
Poor sperm motility often develops when sperm structure, energy production, or reproductive health is affected.
Several medical conditions can reduce the ability of sperm to move efficiently.
Common Causes
- Varicocele
- Reproductive tract infections
- Oxidative stress
- Hormonal imbalance
- High fever
- Genetic abnormalities
Lifestyle Factors
- Smoking tobacco
- Excess alcohol consumption
- Sedentary lifestyle
- Poor nutrition
- Chronic stress
Studies published in reproductive medicine journals in 2024 reported a strong link between oxidative stress and decreased sperm motility.
Improving overall health can often improve sperm movement over time.
What Are the Symptoms of Male Infertility?
Male infertility symptoms vary depending on the underlying condition.
Many men have normal sexual function and remain unaware of fertility issues until fertility testing is performed.
Common symptoms include:
- Difficulty achieving pregnancy
- Reduced libido
- Erectile dysfunction
- Ejaculation problems
- Testicular pain
- Swelling around the testes
- Hormonal changes
- Reduced facial or body hair growth
A fertility evaluation is recommended when conception does not occur after one year of regular unprotected intercourse.
How Is Male Infertility Diagnosed?
Male infertility is diagnosed through medical history, physical examination, and fertility testing.
A fertility specialist evaluates sperm health, hormone levels, and reproductive function.
Common Diagnostic Tests
- Semen Analysis
- Hormone Testing
- Scrotal Ultrasound
- Genetic Testing
- DNA Fragmentation Testing
- Testicular Biopsy
What a Semen Analysis Measures
| Parameter | Purpose |
| Sperm Count | Number of sperm present |
| Motility | Ability to move |
| Morphology | Sperm shape |
| Volume | Amount of semen |
| Vitality | Percentage of living sperm |
Accurate diagnosis helps determine whether natural conception, medication, or assisted reproductive treatment is appropriate.
Can Lifestyle Changes Improve Male Fertility?
Lifestyle changes can improve sperm health in many cases.
Sperm production takes approximately 74 days. Positive health changes may show measurable improvements within two to three months.
Recommended Lifestyle Changes
- Stop smoking
- Reduce alcohol intake
- Maintain healthy body weight
- Exercise regularly
- Manage stress
- Improve sleep quality
- Follow a nutrient-rich diet
- Avoid excessive heat exposure
Nutrients linked with sperm health include:
- Zinc
- Selenium
- Vitamin C
- Vitamin D
- Coenzyme Q10
- Omega-3 fatty acids
Lifestyle improvements may enhance both sperm count and sperm motility.
How Male Infertility Can Be Treated
Male infertility treatment depends on the cause, severity, and duration of fertility problems.
Many men respond well to medical treatment and lifestyle interventions.
Medical Treatments
- Hormonal therapy
- Antibiotics for infections
- Surgical correction of varicocele
- Treatment of reproductive tract blockages
Assisted Reproductive Treatments
| Treatment | When It Is Used |
| IUI | Mild male infertility |
| IVF | Moderate fertility challenges |
| ICSI | Severe male factor infertility |
| Surgical Sperm Retrieval | Very low sperm production |
ICSI has become one of the most successful treatments for severe male infertility because a single healthy sperm is injected directly into the egg.
When Should Couples Seek Fertility Evaluation?
Couples should seek fertility evaluation when pregnancy does not occur after 12 months of regular unprotected intercourse.
Couples should consider earlier evaluation in specific situations.
Seek Professional Help If:
- The female partner is over 35 years old
- Semen analysis shows abnormalities
- Previous fertility treatment has failed
- Recurrent miscarriages have occurred
- Erectile or ejaculation problems exist
- Testicular surgery has been performed
- Known reproductive disorders are present
Early diagnosis often expands treatment options and improves pregnancy outcomes.
How Can EVA IVF and Women Centre Help?
EVA IVF and Women Centre provides fertility evaluation and advanced reproductive treatment for couples facing fertility challenges.
Our fertility specialists assess sperm count, sperm motility, hormonal health, and reproductive function through detailed diagnostic testing.
Available services include:
- Male fertility assessment
- Semen analysis
- Hormonal evaluation
- Male infertility treatment
- IVF treatment
- ICSI treatment
- Personalized fertility counseling
Early intervention can identify the cause of infertility and guide couples toward the most suitable treatment pathway.
Conclusion
Male infertility is a common medical condition that affects many couples trying to build a family. Low sperm count and poor sperm motility remain two of the most frequent causes of male fertility problems.
Accurate diagnosis is the first step toward successful treatment. Modern fertility care offers several effective options, including lifestyle modification, medication, surgery, IVF, and ICSI.
Early consultation with a fertility specialist can increase the likelihood of successful treatment and improve the chances of achieving pregnancy.
FAQ
Foods rich in antioxidants, zinc, selenium, omega-3 fatty acids, and vitamins C, D, and E may support sperm health. Examples include fish, eggs, nuts, seeds, fruits, leafy vegetables, and whole grains.
Yes. Chronic stress can affect hormone production and sperm quality. Long-term stress may reduce sperm concentration, motility, and overall reproductive health.
Prolonged exposure to heat from laptops placed directly on the lap may increase scrotal temperature. Elevated testicular temperature can negatively affect sperm production over time.
Yes. Many men with normal sexual function, erections, and ejaculation may still have sperm-related fertility issues that can only be detected through fertility testing.
Some forms of male infertility have a genetic component. Certain chromosomal abnormalities and inherited conditions can affect sperm production and reproductive function.
Yes. Excess body weight can alter hormone levels and increase inflammation in the body. These changes may reduce sperm count, sperm quality, and testosterone levels.
Diabetes can affect sperm quality, hormone balance, and sexual function. Poorly controlled blood sugar levels may increase the risk of fertility challenges.
Exposure to air pollution, industrial chemicals, pesticides, and heavy metals may negatively affect sperm production and motility over time.
No. Many causes of male infertility are treatable. Fertility may improve after medical treatment, lifestyle modifications, or assisted reproductive procedures.
Yes. Certain infections can cause scarring, inflammation, or reproductive tract blockages that may affect fertility even after the infection has resolved.
Moderate regular exercise can support hormone balance and reproductive health. Excessive intense training may have the opposite effect in some men.
Men with nutritional deficiencies may benefit from fertility-focused supplements containing zinc, selenium, CoQ10, folic acid, and antioxidants. Supplement use should be guided by a fertility specialist.
Most initial fertility tests, including semen analysis and blood tests, are non-invasive and generally painless.
Certain sperm DNA abnormalities may increase the risk of recurrent pregnancy loss and failed implantation in some couples.
ICSI has helped many couples with severe male factor infertility achieve pregnancy. Success rates vary depending on female age, egg quality, embryo quality, and overall reproductive health.
