Male infertility causes

⚠️ Male Infertility: Common Conditions That Affect Sperm — And What Can Be Done

July 11, 20253 min read

🔹 Introduction: When Sperm Struggles Have a Medical Cause

While lifestyle and environment play a big role in sperm health, many men experience fertility issues due to underlying medical conditions. Some are inherited, others acquired — but all of them can impact sperm production, function, or delivery.

The good news? In many cases, there are treatments or procedures that can improve fertility or assist with conception.


🔬 Common Medical Causes of Male Infertility


1. Varicocele (Dilated Testicular Veins)

  • What it is: Enlarged veins in the scrotum (like varicose veins)

  • Why it matters: Increases scrotal temperature, leading to DNA fragmentation and reduced sperm count/motility

  • Symptoms: May feel like a “bag of worms”; often painless

  • Diagnosis: Physical exam, scrotal ultrasound

  • Treatment:

    • Varicocelectomy (surgical repair)

    • Can improve sperm quality in 30–50% of men within 6–12 months


2. Obstructive Azoospermia

  • What it is: A complete absence of sperm in semen due to a physical blockage

  • Causes:

    • Prior vasectomy

    • Congenital bilateral absence of the vas deferens (common in men with CF gene)

    • Scarring from infection or trauma

  • Diagnosis: Semen analysis + scrotal or transrectal ultrasound

  • Treatment Options:

    • Sperm retrieval: TESA, PESA, MESA, or Micro-TESE

    • IVF with ICSI using retrieved sperm


3. Hormonal Imbalances

  • What it is: Disruption in hormone signals between brain and testicles

  • Causes: Pituitary tumors, low FSH/LH, anabolic steroid use, obesity

  • Diagnosis: Bloodwork: FSH, LH, testosterone, prolactin

  • Treatment:

    • Stopping steroids

    • Medications like clomiphene citrate, aromatase inhibitors, hCG injections


4. Genetic Conditions

  • Examples:

    • Klinefelter Syndrome (XXY): Low testosterone, high FSH/LH, small testes

    • Y chromosome microdeletions: Missing sperm production genes

  • Diagnosis: Karyotype + Y-chromosome microdeletion testing

  • Treatment:

    • Some men can undergo micro-TESE to retrieve sperm directly from testicles

    • Genetic counseling recommended


5. Infections or STIs

  • Examples:

    • Epididymitis, prostatitis, mumps orchitis

  • Impact: Inflammation can damage sperm-producing structures or block ducts

  • Diagnosis: Semen culture, urinalysis

  • Treatment:

    • Antibiotics, anti-inflammatory meds

    • Treating underlying STI (e.g., chlamydia)


6. Retrograde Ejaculation

  • What it is: Semen goes into the bladder instead of out through the urethra

  • Causes: Diabetes, spinal injury, prostate surgery, medications

  • Diagnosis: Post-ejaculation urine test (sperm in urine)

  • Treatment:

    • Medications like pseudoephedrine

    • Sperm collection from urine + IUI or IVF


🧪 Procedures That Can Help Retrieve or Improve Sperm

These options are often used before or during IVF cycles:


🔹 Sperm Retrieval Techniques

Used in cases of azoospermia or failed ejaculation:

  • TESA (Testicular Sperm Aspiration)

  • PESA (Percutaneous Epididymal Sperm Aspiration)

  • MESA (Microsurgical Epididymal Sperm Aspiration)

  • Micro-TESE (Microsurgical Testicular Sperm Extraction) – most effective for non-obstructive azoospermia


🔹 Medical Therapies

Used for men with hormonal issues or borderline counts:

  • Clomiphene citrate (Clomid): Increases FSH/LH

  • hCG injections: Boost testosterone and sperm

  • Aromatase inhibitors: Lower estrogen in overweight men


🔹 Lifestyle Changes

Can improve mild-to-moderate male factor infertility:

  • Quit tobacco, alcohol, or marijuana

  • Take antioxidant supplements (zinc, CoQ10, L-carnitine)

  • Treat obesity and manage chronic stress

  • Avoid heat (hot tubs, laptops, tight clothing)


🧠 Final Thoughts

Male infertility is more common than most couples realize — and often treatable. In fact, up to 50% of IVF cases involve a male factor. A detailed semen analysis and medical evaluation can uncover the root cause and help fertility specialists tailor the most effective plan — whether that’s hormone therapy, retrieval, or assisted reproduction.

Joyce Edwards

Sonographer with over 45 years in experience

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