top of page
Search

How to Increase Sperm Count

Writer: Maryna Kopeyko-Langlois
Maryna Kopeyko-Langlois
Sep 17
7 min read
How to Increase Sperm Count

If you're reading this, it's probably one of two things. A semen analysis came back lower than you were hoping, or you and your partner are trying to conceive and you want to know what's actually within your control. Fair question. So how do you increase sperm count, and does any of it really work?


Here's the honest answer. For a lot of men, yes, certain habits and health changes are genuinely tied to improved sperm count over time. Not overnight, not guaranteed, but there's real research behind it. Let's get into what sperm count actually tells you, what tends to drag it down, and which changes are worth your time versus which ones are mostly noise.


What Sperm Count Actually Means

Sperm count is the concentration of sperm in a semen sample, measured in millions per millilitre. According to the Mayo Clinic, a count is generally considered low, a condition called oligospermia, once it drops under 15 million sperm per millilitre. A typical range runs from around 15 million up to 200 million per millilitre, per the Cleveland Clinic (broadly in line with the World Health Organization's reference values). Drop below roughly 5 million per millilitre, and that's classified as severe.


Count Isn't the Whole Story

Here's the part people gloss over. Count is just one line on a semen analysis. Motility, which is how well the sperm actually swim, and morphology, whether they're shaped normally, matter just as much, sometimes more. A man can have a count on the lower side and still have no trouble conceiving if motility and shape are strong. And a great count doesn't guarantee smooth sailing either. Cleveland Clinic points out that a low count doesn't mean your partner can't get pregnant. It can just mean it takes longer, or needs a bit more support to get there.


What Actually Causes a Low Sperm Count?


There's rarely just one culprit. Hormonal imbalances, varicoceles (essentially enlarged veins around the testicles, more common than people realise), infections including STIs, certain medications, obesity, chronic illness, smoking, and prolonged heat exposure can all play a role, according to the Mayo Clinic. And sometimes, frustratingly, a full workup turns up nothing conclusive at all. That's not rare, and it's exactly why a specialist should be involved rather than trying to self-diagnose from a search engine.


Lifestyle Factors That May Help

A narrative review in the Arab Journal of Urology looked across diet, exercise, substance use, stress, sleep and weight, and the takeaway was that lifestyle changes can meaningfully, though not completely, offset some of the damage caused by oxidative stress on sperm. That's not a promise it'll work for everyone, but the pattern across the research is consistent enough to be worth your effort.


What You Eat

Diet is one of the more studied levers here, and it's not just folklore. A 2025 systematic review and meta-analysis found that men following a Mediterranean-style diet, rich in vegetables, fruit, whole grains, fish and unsaturated fats, showed meaningfully better sperm count, motility and shape than men who didn't. Nutrients like omega-3s, folate, vitamin D, zinc, selenium and vitamin C keep coming up as important for sperm production. On the flip side, higher intakes of ultra-processed food have been linked to weaker sperm viability and shape. Worth being honest about the limits, though: the evidence points clearly to better semen parameters, while the effect on actual pregnancy or birth rates is less certain. Broadly, the diet that's good for your heart looks a lot like the diet that's good for your sperm.


Exercise and Weight

Regular, moderate activity is linked to better sperm quality, and being sedentary tends to correlate with weaker results. But more isn't automatically better. Some research links extreme endurance training to reduced sperm quality, so very high volume training isn't necessarily an advantage here. Carrying extra weight is associated with hormonal changes that can affect sperm production, so if weight loss is part of the plan, gradual, sustainable loss tends to beat crash dieting.


Sleep and Stress

Sleep and testosterone are closely linked, and both too little and too much sleep have shown associations with weaker semen numbers in some studies. Chronic stress can throw hormones off too, though it's rarely the entire explanation for a low count by itself. Think of it as one factor to manage among several, not the whole story.


Smoking and Drinking

Of everything on this list, smoking has some of the strongest, most consistent evidence behind it, tied to lower count, motility and normal shape fairly reliably across studies. Heavy drinking is similarly linked to lower testosterone and weaker sperm quality, though moderate, occasional drinking hasn't shown the same strength of connection.


Heat

Your testes sit outside the body for a reason: they function best a few degrees cooler than everything else. Long stretches in hot tubs or saunas, tight underwear, and laptops parked on your lap for hours have all been floated as things that can nudge scrotal temperature up over time, potentially affecting sperm production. That said, this factor alone rarely explains a major drop, and the effect size varies a lot from person to person.


Medications and Underlying Conditions

Some medications, including certain testosterone therapies and chemotherapy drugs, can interfere with sperm production directly. Underlying issues like varicoceles, infections or hormone disorders can be at play too, and these usually need medical treatment rather than lifestyle tweaks.


Please don't stop or change a prescribed medication on your own because of something you read here. Talk to the doctor who prescribed it first. An untreated condition, or an unsupervised medication change, can create bigger problems than the one you're trying to solve.


Can Supplements Improve Sperm Count?

Antioxidant supplements like CoQ10, zinc, vitamin C, vitamin E, selenium and folic acid get a lot of hype in the fertility world. The honest answer is that the evidence is genuinely mixed. A 2022 Cochrane review, one of the most rigorous types of evidence there is, looked at 90 studies covering more than 10,000 subfertile men and found that antioxidant supplements might modestly improve live birth and pregnancy rates for couples in fertility treatment. But the certainty behind that finding was rated very low, mostly because study quality and reporting were inconsistent across the board, and some large trials since have found no benefit at all.


Bottom line: supplements might help some men to some degree, but they're not a proven fix, product quality on the shelf varies wildly, and none of this replaces an actual medical evaluation. Check with a provider before starting anything, especially if you're on other medications.


How Long Does It Take to Improve Sperm Count?

New sperm takes roughly 74 days, about two to three months once you include the time to mature and travel, to fully develop. So if you clean up your diet or quit smoking today, don't expect this month's test to show it. Give it real time, and know that results vary a lot from man to man. Some causes of low sperm count also just need medical treatment, and lifestyle changes alone won't necessarily fix everything.


What Semen Analysis Testing Actually Involves

A semen analysis is usually done after two to five days without ejaculating, and it measures count, motility, morphology and volume. One thing worth knowing: results can bounce around noticeably between samples from the same person, which is why providers often ask for a repeat test before drawing real conclusions, as the Mayo Clinic explains.


When Should You Actually See a Specialist?

General guidance points to getting evaluated after a year of trying without success, or six months if your partner is over 35. Don't wait that long, though, if you've had a testicular injury, surgery or infection, or if a semen analysis has already come back abnormal. Get checked sooner. A specialist can find and treat underlying causes, whether hormonal, structural or something else entirely, that no amount of diet and exercise will fix on their own.


Quick Answers


Can sperm count increase naturally?

Often, yes. Diet, weight management, exercise, and cutting back on smoking or heat exposure are linked to better numbers in research, though it varies by person and underlying cause.


What foods may support sperm health?

Foods rich in zinc, folate, antioxidants and omega-3s, like leafy greens, nuts, fatty fish, and a broadly Mediterranean-style eating pattern, come up again and again in the research.


How long does it take to improve sperm count?

About two to three months, since that's roughly how long it takes new sperm to fully develop.


Does exercise improve sperm health?

Moderate, regular activity does. Extreme endurance training might work against you.


Can stress affect sperm count?

It can play a role through hormonal disruption, but it's rarely the sole cause on its own.


Can poor sleep affect sperm health?

Yes. Both too little and too much sleep have been linked to weaker results.


Does smoking affect sperm quality?

Yes, and this is one of the more consistently documented findings out there.


Can supplements improve sperm count?

Maybe, modestly, for some men, but the evidence is low certainty, and it's not a substitute for medical evaluation.


Can low sperm count be treated?

Often, yes, depending on the cause. Treatment can range from lifestyle changes to medication, hormone therapy or surgery.


When should a semen analysis be done?

Typically after a year of trying, or sooner if there's a known risk factor or prior reproductive health issue.


Bottom Line

Sperm count is one piece of a much bigger fertility puzzle, and no single food, supplement or habit is guaranteed to increase sperm count for every person. That said, the research is fairly consistent on the basics. Eating well, maintaining a healthy weight, moving your body, sleeping enough, and cutting out smoking are genuinely tied to improved sperm health for a lot of men, even if the results aren't universal or instant. If you've already made these changes and you're still stuck, a fertility evaluation is going to get you further than continuing to guess.

If you'd like personalised help optimising the factors within your control, our team works with couples online worldwide, and in person in London and Dorset, always alongside your medical care.


This article is for informational purposes only and isn't a substitute for personalised medical advice. Talk to a doctor or fertility specialist about your specific situation.



References





Comments

bottom of page