If you are wondering how to increase sperm count, the good news is that you can do it naturally within two to three months by improving your diet, exercising regularly, losing excess weight, quitting smoking, cutting back on alcohol, reducing heat exposure to your testicles, and getting enough sleep. Because a full cycle of sperm production (spermatogenesis) takes around 74 days, most men see measurable improvements on a semen analysis after roughly three months of consistent lifestyle changes. If you and your partner have been trying to conceive for a year without success — or six months if she is over 35 — the NHS recommends seeing your GP for a fertility assessment.
What Does a Healthy Sperm Count Look Like?
Before you try to increase your sperm count, it helps to know what “normal” actually is. According to NHS guidance, a healthy semen sample contains at least 15 million sperm per millilitre of semen, or 39 million sperm in the total ejaculate. Semen quality is also judged on motility (how well sperm swim) and morphology (their shape): at least 32% of sperm should be progressively motile and at least 4% should have a normal shape.
How Sperm Count Is Measured
A semen analysis — the only reliable way to measure your count — involves providing a sample that is examined in a laboratory. Your GP can arrange this test on the NHS, usually after you have been trying to conceive for a while. Because sperm counts vary naturally from day to day, doctors normally repeat the test after two to three months before drawing conclusions. Private fertility clinics across the UK charge roughly £80–£200 for a single semen analysis if you want results sooner.
Why Sperm Counts Are Falling
Large-scale studies have found that average sperm counts among men in Western countries have roughly halved over the past four decades, and UK researchers believe the trend is continuing. Scientists link this decline to a mix of factors: rising obesity, more sedentary lifestyles, poorer diets, increased exposure to environmental chemicals, and higher stress levels. The good news is that most of these are lifestyle factors — which means the steps below to increase your sperm count genuinely work. Male fertility problems contribute to around half of all couples’ difficulty conceiving, yet the topic is rarely discussed openly. Understanding the basics is the first step toward taking control.
How to Increase Sperm Count: 12 Evidence-Based Steps
There is no magic pill that will raise your sperm count overnight, but the following twelve strategies are backed by research and recommended by fertility specialists. For best results, apply several of them together for at least three months.
1. Reach and Maintain a Healthy Weight
Obesity is one of the strongest lifestyle predictors of low sperm count. Excess body fat disrupts hormone balance — particularly testosterone and oestrogen levels — and is linked to lower sperm concentration and motility. Studies show that men who lose weight through diet and exercise often see their semen quality improve within months. The NHS BMI calculator is a useful starting point: aim for a BMI between 18.5 and 24.9.
2. Eat a Fertility-Friendly Diet
Your diet has a direct impact on sperm production. Men who eat diets rich in fruit, vegetables, whole grains, oily fish, nuts, and lean protein consistently score better on semen analyses than men who rely on processed foods. To increase your sperm count through diet, focus on:
- Oily fish such as salmon, mackerel and sardines, rich in omega-3 fatty acids linked to better sperm morphology.
- Colourful fruit and vegetables, which provide antioxidants like vitamin C, vitamin E and lycopene that protect developing sperm from oxidative damage.
- Nuts and seeds, especially walnuts and pumpkin seeds, which supply zinc, selenium and healthy fats.
- Whole grains and pulses for folate and fibre, which support overall reproductive health.
Cut back on processed meat, sugary drinks, trans fats and excessive soy products, all of which have been associated with poorer semen quality in observational studies.
3. Exercise Regularly — But Avoid Excess
Moderate exercise boosts testosterone, improves blood flow and helps with weight management, all of which support healthy sperm production. Aim for at least 150 minutes of moderate-intensity activity per week, as the NHS recommends. However, extremely intense endurance training — such as marathon running or heavy cycling for many hours a week — has been linked to lower sperm counts in some studies, so balance matters. If you cycle a lot, consider a well-padded saddle and take breaks to reduce pressure on the perineum.
4. Quit Smoking and Limit Alcohol
Smoking damages sperm DNA, reduces count and motility, and is strongly linked to infertility. Men who quit smoking see improvements in semen quality, though it takes around three months. Alcohol is less clear-cut, but heavy drinking definitely harms sperm production, so the UK guidance of no more than 14 units per week applies — and less is better when trying to conceive. The NHS offers free stop-smoking services in every region of the country.
5. Keep Your Testicles Cool
Sperm are produced most efficiently at around 2–4°C below body temperature, which is why the testicles hang outside the body. Prolonged heat exposure — tight underwear, hot baths, saunas, or keeping a laptop on your lap — can temporarily reduce your count. Swap to loose-fitting boxers, avoid long hot baths while trying to conceive, and take breaks if your job involves sitting for long periods. These simple changes cost nothing and support every other effort you make.
6. Manage Stress and Prioritise Sleep
Chronic stress raises cortisol, which can suppress the hormones that drive sperm production. Men reporting high stress levels tend to have lower sperm counts and poorer motility. Aim for 7–9 hours of sleep per night, since testosterone is largely produced during sleep, and consider stress-management techniques such as walking, mindfulness, or simply reducing overtime where possible.
7. Consider Key Nutrients and Supplements
Certain micronutrients are essential for spermatogenesis. The most-studied include:
- Zinc (found in meat, shellfish, lentils and pumpkin seeds) — low levels are linked to reduced sperm count and testosterone.
- Selenium (Brazil nuts are the richest source) — supports sperm motility and structure.
- Folate and vitamin B12 — deficiencies are associated with lower counts and abnormal sperm.
- Vitamin D — many UK men are deficient in winter; deficiency has been linked to poorer semen quality.
- Coenzyme Q10 and L-carnitine — antioxidants with promising trial evidence for improving count and motility.
You can ask your GP to check for deficiencies before spending money on supplements, which can cost £10–£30 a month. Never start high-dose supplements without medical advice, as more is not always better.
8. Limit Exposure to Environmental Toxins
Some pesticides, industrial chemicals and heavy metals act as endocrine disruptors that can lower sperm count. You cannot eliminate exposure entirely, but you can reduce it: wash fruit and vegetables, avoid heating food in plastic containers, ventilate when using household chemicals, and follow workplace safety guidance if you handle solvents or pesticides professionally.
9. Review Your Medications
Certain prescription drugs — including some antidepressants, blood pressure medicines, anabolic steroids, and treatments for prostate enlargement — can suppress sperm production. Never stop a prescribed medication on your own, but do ask your GP or pharmacist whether your current medicines could affect fertility and whether alternatives exist.
10. Avoid Recreational Drugs
Cannabis, cocaine and anabolic steroids all harm sperm production; steroid use in particular can shut sperm production down almost entirely, sometimes for a year or more after stopping. If you use recreational drugs, be honest with your GP — support services are confidential and widely available through the NHS.
11. Treat Underlying Medical Conditions
Conditions such as varicocele (enlarged veins in the scrotum), undescended testicles, hormonal disorders, and untreated infections can all reduce sperm count. A varicocele repair, for example, improves semen quality in many men and is available on the NHS when it is affecting fertility. If your count stays low despite lifestyle changes, further investigation is warranted.
12. Be Patient and Stay Consistent
Because sperm take about 74 days to mature, no lifestyle change will show up in a semen analysis for at least two to three months. Track your habits, keep going, and book a repeat semen analysis after three months to measure your progress. Consistency is what separates men who see results from those who do not.
When to See Your GP About Low Sperm Count
Book a GP appointment if you have been trying to conceive for 12 months without success, or after six months if your partner is over 35. Go sooner if you have a history of testicular injury, undescended testicles, erection problems, or a very low sex drive, as these can signal hormonal issues. The NHS offers fertility investigations and treatment on the NHS, starting with semen analysis and hormone blood tests, and can refer you to a specialist clinic. Do not feel embarrassed — GPs handle fertility concerns routinely, and early investigation gives you the most options.
How to Increase Sperm Count When Trying to Conceive
If pregnancy is the goal, timing matters as much as count. Have intercourse every two to three days during your partner’s fertile window — daily ejaculation slightly lowers count per sample, while abstinence beyond five days increases the proportion of older, less motile sperm. Your partner can track ovulation with predictor kits or a fertility app, and both of you should be taking preconception care: she needs folic acid, you both benefit from a healthy weight, and neither of you should smoke. Remember that conception is a couple’s project — around a third of fertility issues are male-factor, a third female-factor, and the rest combined or unexplained.
Frequently Asked Questions
How long does it take to increase sperm count?
Expect at least two to three months before a repeat semen analysis shows improvement, because each new batch of sperm takes around 74 days to develop. Some men need four to six months of consistent lifestyle changes for a significant rise.
Do sperm count supplements actually work?
Supplements containing zinc, selenium, folate, CoQ10 or L-carnitine have modest supportive evidence, particularly in men with deficiencies. They are not a substitute for lifestyle changes, and you should speak to your GP or pharmacist before starting them.
Can boxers really increase sperm count compared to briefs?
A Harvard study found that men who wore boxers had about 25% higher sperm concentration than men who wore tighter underwear, likely because of lower scrotal temperatures. It is a small, free change that is worth making.
Does age affect sperm count?
Yes. Sperm count, motility and DNA quality gradually decline from around age 40 onwards, and the risk of genetic issues in offspring rises slightly. The lifestyle steps above benefit men of all ages.
Can a low sperm count be treated on the NHS?
Yes. The NHS investigates male fertility with semen analysis and hormone tests, treats underlying causes such as varicocele, and offers assisted conception options including IVF and ICSI where appropriate, subject to local eligibility criteria.
Conclusion
Learning how to increase sperm count comes down to a simple formula: eat well, move regularly, keep a healthy weight, avoid smoking and heavy drinking, reduce heat and stress, and give it three months. Most men who commit to these changes see meaningful improvements — and if they do not, the NHS pathway gives you expert help and real options. Start today; your future family is worth it.
