Fertility & conception

Varicocele and Fertility: When a Urologist Helps

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A varicocele — enlarged scrotal veins — is a common finding in male-factor fertility evaluations and can affect sperm by raising scrotal temperature. A urologist referral makes sense when a couple is struggling to conceive or a semen analysis is abnormal. Repair helps some men, so specialists weigh it against watchful waiting.

Last updated: July 2026

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What is a varicocele, and how might it affect fertility?

A varicocele is a cluster of enlarged veins in the scrotum, similar to varicose veins in the leg. The pooled blood can raise the temperature around the testicle, and specialists think this warmth may impair sperm production and quality in some men. According to the World Health Organization, male factors contribute to roughly half of infertility among couples, which affects about 1 in 6 people overall 1. Varicoceles are among the more commonly identified findings in male-factor infertility evaluations. Not every varicocele causes a problem, though — many men with one father children without difficulty — so the finding alone does not settle whether it is affecting this couple's fertility.

When does a varicocele actually warrant a urologist?

A referral makes the most sense when a couple is having trouble conceiving and a semen analysis shows abnormal results alongside a varicocele that can be felt on exam. According to the American Society for Reproductive Medicine, infertility is typically evaluated after 12 months of trying, or 6 months when the female partner is 35 or older, and evaluation covers both partners 2. A varicocele found in a man with normal semen results and no fertility concern usually does not need treatment. The combination that draws a urologist's attention is a palpable varicocele plus measurable changes in the sperm, since that pairing is where repair is most likely to help.

Does fixing a varicocele improve the odds?

Repair — called varicocelectomy — aims to redirect blood flow away from the enlarged veins, and it may improve semen measures for some men over several months. Results vary, though, and not everyone benefits, which is why specialists weigh repair against watchful waiting rather than treating every varicocele. According to the American Society for Reproductive Medicine, optimizing natural fertility also means addressing modifiable factors on both sides, from timing intercourse to general health 3. Reviewing how to read semen analysis results helps a couple understand what repair might realistically change. A urologist can estimate the likely benefit for your partner's specific findings before anyone commits to surgery.

What else affects sperm besides a varicocele?

A varicocele is rarely the whole story, and other factors often matter as much or more. According to the American Society for Reproductive Medicine, smoking harms fertility and semen quality, and stopping is one of the clearer steps a man can take 4. Weight, heat exposure, certain medications, and infections can also play a role, as can the couple's timing and the female partner's age — fertility declines after the mid-30s and roughly halves by 40 5, so both partners' clocks count. Our overview of low sperm count causes covers the fuller list. Addressing several small factors together sometimes helps more than treating a varicocele alone.

When a varicocele needs a urologist

A varicocele paired with trouble conceiving or an abnormal semen analysis is a reason to see a fertility specialist or urologist rather than to worry in silence. A urologist can examine the varicocele, review the semen results, and give a realistic sense of whether repair is likely to help your particular situation. Because fertility involves both partners, evaluating together often makes the picture clearer than looking at either side alone. A calm, evidence-based visit usually beats guessing from search results. Gale can help you organize the semen analysis and questions before that appointment.

Common questions

No. Many men have a varicocele and father children without difficulty, and a varicocele found without any fertility concern or abnormal semen results usually does not need treatment. Repair is considered mainly when a palpable varicocele accompanies trouble conceiving and abnormal sperm findings.

A urologist can often feel a varicocele during a physical exam, sometimes while the man bears down while standing. An ultrasound of the scrotum can confirm it and gauge its size. A semen analysis is done alongside to see whether sperm are affected.

When repair helps, semen measures often change over several months rather than immediately, since sperm take time to develop. Not every man improves, so a urologist sets expectations based on the specific findings. Follow-up semen analyses track any change.

Yes. Fertility involves both partners, and evaluating together gives a fuller picture than focusing on one side. A varicocele may be one piece, while the female partner's age and health and the couple's timing also matter. A fertility specialist can coordinate both evaluations.

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When testicular or scrotal symptoms need review

  • —Sudden, severe testicular pain is a reason to seek emergency evaluation, as it can signal testicular torsion
  • —A new scrotal lump or a mass that does not shrink when lying down is a reason to seek clinician review
  • —A varicocele that appears suddenly on the right side or in an older man is a reason to seek clinician review
  • —Scrotal swelling with fever or redness is a reason to seek same-day clinician review

If there is sudden, severe testicular pain or swelling, seek emergency care right away or go to the nearest emergency room, as testicular torsion needs urgent treatment.

This article is general health education, not medical advice. Whether a varicocele should be repaired is a decision to make with a urologist or reproductive specialist who has examined the findings.

References

  1. 1.World Health Organization (2025). Infertility (fact sheet). World Health Organization (WHO). link ✓Male factors contribute to roughly half of infertility among couples; infertility affects about 1 in 6 people overall.
  2. 2.Practice Committee of the American Society for Reproductive Medicine (2023). Definition of infertility: a committee opinion. Fertility and Sterility. doi:10.1016/S0015-0282(23)01971-4 ✓Infertility is typically evaluated after 12 months of trying, or 6 months when the female partner is 35 or older, with evaluation of both partners.
  3. 3.Practice Committee of the American Society for Reproductive Medicine / SREI (2022). Optimizing natural fertility: a committee opinion. Fertility and Sterility. doi:10.1016/j.fertnstert.2021.10.007 ✓Optimizing natural fertility includes addressing modifiable factors in both partners, including timing and general health.
  4. 4.Practice Committee of the American Society for Reproductive Medicine (2018). Smoking and infertility: a committee opinion. Fertility and Sterility. doi:10.1016/j.fertnstert.2018.06.016 ✓Smoking harms fertility and semen quality; cessation is a clear modifiable step.
  5. 5.American College of Obstetricians and Gynecologists / American Society for Reproductive Medicine (2014). Female age-related fertility decline. Committee Opinion No. 589. Obstetrics & Gynecology. doi:10.1097/01.AOG.0000444440.96486.61 ✓Female fertility declines after the mid-30s and roughly halves by age 40, so both partners' ages matter to a couple's odds.

5 sources, numbered by first appearance. General health information, not medical advice. AI-assisted editorial content — every citation independently verified. Editorial policy

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