Varicocele and Male Infertility: Does Surgery Actually Improve Sperm Count?

Written by Mannat Fertility Editorial Team | Medically reviewed by Dr. Archana Agarwal, MBBS, DipGO, Medical Director, Mannat Fertility Clinic

Roughly 15% of all adult men have a varicocele. Among men being investigated for infertility the figure is around 40%, which makes it the structural cause of male factor infertility that gets identified most often. Whether it should be surgically repaired is still one of the more genuinely debated questions in reproductive medicine. At Mannat Fertility we take patients through that question with a clear read of what the current evidence says.

What Is a Varicocele and Why Does It Affect Fertility?

A varicocele is an enlargement of the veins draining blood away from the testis. Varicose veins, essentially, in the male reproductive tract. The veins dilate, blood pools in them, and the temperature inside the testis rises. Sperm production is highly temperature-sensitive and needs conditions slightly below core body temperature, so that localised warming can impair both the production and the function of sperm over time.

Grading runs I to III, and it goes by size, so that a Grade III varicocele is one you can see with the naked eye. None of which is the distinction that drives a treatment decision. The question we actually want answered is whether the varicocele can be felt on clinical examination or whether it only ever showed up on an ultrasound, and that second category has a name, it is called subclinical.

Does Varicocele Repair Actually Improve Sperm Count?

What the Evidence Shows on Semen Parameters

Ask about semen parameters and the answer now comes back reasonably clear. There is a large meta-analysis in World Journal of Men’s Health which went through data from thousands of men with clinical varicocele, and what it found was that repair improved things significantly. Sperm concentration went up. So did total count, and progressive motility, and total motility, and morphology along with them. Independent systematic reviews keep landing in the same place, and the guidelines have followed them there.

Grade B evidence, a moderate recommendation: that is what the 2024 AUA/ASRM male infertility guideline puts behind considering varicocele repair in a man who has a palpable varicocele together with infertility and abnormal semen parameters. Those same guidelines find no demonstrable benefit at all where the varicocele is subclinical and was picked up only on imaging. Hold onto that one, because it does a lot of work.

What About Pregnancy Rates?

Here it gets less tidy. Natural pregnancy rates after clinical varicocele repair come out of the meta-analyses somewhere in the mid-30s to low-40s percent, and the comparison figure in untreated men over comparable follow-up is approximately 17%. That gap is real and it is worth having. What it is not is a prediction about you, since these remain population averages, and your partner’s fertility and whatever is driving the varicocele in the first place will both bear on where you actually land.

Where a couple is pursuing IVF regardless, whether to repair the varicocele first becomes a specific clinical question rather than a general rule.

Who Should Consider Varicocele Surgery?

Support for surgery is clearest where all three of the following are present:

• The varicocele is palpable, rather than subclinical
• Semen parameters are abnormal, which usually means count or motility or morphology falling below reference ranges
• Infertility is documented in a couple who are attempting conception

The indication weakens considerably in men whose semen parameters are normal, in subclinical varicoceles, and where it is being proposed as a first step before the male and female fertility evaluation has been completed.

What Are the Surgical Options?

Three approaches are in common use:

• Microsurgical varicocelectomy. This is considered the gold standard, for its precision and its low recurrence rate. It is performed under magnification, which protects the testicular artery and the lymphatics
• Laparoscopic varicocelectomy. A minimally invasive approach through small abdominal incisions. Effective, though it does require general anaesthesia
• Percutaneous embolisation. A radiological rather than surgical technique, using a catheter to block the dilated vein. Less invasive, with a slightly higher recurrence rate in some studies

Normal activity usually resumes one to two weeks after the procedure. Improvement in semen parameters comes gradually across three to six months, which reflects the natural duration of the spermatogenic cycle.

Varicocele repair is not universally necessary and it is not universally effective. In the right candidate, meaning a palpable varicocele with abnormal parameters and confirmed infertility, the evidence does support it. Our team at Mannat Fertility assesses each case individually before recommending either a surgical or an assisted reproductive route. Book a consultation to discuss your semen analysis and the next steps with our male fertility team.

This article is for general educational purposes and is not a substitute for personalised medical advice from your fertility specialist or gynaecologist.