preventing male infertility
Informed by recognized medical guidance
Overview
Male infertility means a man has trouble getting his partner pregnant. It is often related to low sperm count, poor sperm movement, or sperm shape. In many cases, the exact cause is not clear, but there are things you can do to protect your fertility.
Key facts
- Infertility affects about 1 in 7 couples, and a male factor contributes in about half of these.
- Healthy lifestyle choices, such as not smoking and eating well, can help protect sperm health.
- Many causes of male infertility are treatable, and many couples go on to have a child with help.
Yes. Infertility is a common health issue. In about one-third of couples who struggle to conceive, the problem is mainly with the man's reproductive system.
Any man who is trying to become a father can be affected. Sperm quality tends to decline slowly after age 40, but men of any age can face fertility challenges.
Symptoms
- Sudden, severe pain or swelling in the testicles
- Severe pain after an injury to the scrotum
- ⚠A new lump or hardening in a testicle
- ⚠Discharge from the penis, burning when urinating, or blood in semen
Common symptoms
- There may be no obvious symptoms. The main sign is not getting a partner pregnant after a year of regular, unprotected sex.
- Some men notice difficulties with sexual function, such as trouble keeping an erection or reduced sexual desire.
- Less often, there may be pain, swelling, or a lump in the testicle area.
Symptoms in older adults
- As men age, sperm count and movement can decline, but this does not usually cause symptoms.
- Health conditions that are more common with age, like diabetes or high blood pressure, may affect fertility.
Causes
Main causes
- Problems with healthy sperm, including low sperm count, poor movement, or abnormal shape.
- Blockages that stop sperm from leaving the body, often due to infection, injury, or a past surgery.
- Low hormone levels, which can be caused by certain medical conditions or medicines.
- Varicocele, which is an enlarged vein in the scrotum that can heat the testicles and affect sperm.
- Damage to the testicles from infection, injury, or cancer treatment.
Risk factors
- Smoking, heavy alcohol use, and recreational drugs.
- Exposure to workplace chemicals, heavy metals, or radiation.
- Tight clothing or frequent hot baths, saunas, or laptop heat on the lap.
- Obesity and a diet high in processed foods.
- High levels of stress, poor sleep, and lack of physical activity.
When to see a doctor
See a doctor urgently if:
- If you have sudden severe testicle pain or swelling, seek same-day medical care.
- If you notice a testicle lump or painful urination, see a doctor promptly.
Book a routine appointment if:
- If you and your partner have not conceived after 12 months of trying, or after 6 months if the woman is over 35.
- If you have a health condition or family history that may affect fertility.
Diagnosis
A doctor will start by asking about your health, sexual habits, medicines, and any past surgeries. They may then do a physical exam and order tests. A key test is a semen analysis, which checks sperm count, shape, and movement.
Tests that may be done
- Semen analysis, to look at sperm number, movement, and shape.
- Hormone blood tests, to check levels that affect sperm production.
- An ultrasound of the scrotum, to look for varicoceles or blockages.
- Genetic tests, to look for inherited causes of infertility.
- A urine test after ejaculation, to check for retrograde ejaculation, where semen goes into the bladder.
What to expect at your appointment
Your doctor will explain each step. You may need to provide a semen sample by masturbating into a cup. It is best to collect the sample at a clinic or lab, after 2 to 5 days without ejaculation. Results usually take a few days to a week.
Treatment
Treatment depends on the cause. In some cases, lifestyle changes are enough. In others, doctors can treat infections, balance hormones, or fix blockages. If conception is still difficult, assisted reproduction techniques can help.
Self-care at home
- Stick to a balanced diet and aim for a healthy weight.
- Exercise moderately for at least 150 minutes each week.
- Quit smoking and limit alcohol to one or two drinks a week at most.
- Avoid anabolic steroids, recreational drugs, and especially marijuana, which can lower sperm counts.
- Learn relaxation techniques or talk to a professional if stress is high.
Medical treatments
Your doctor may prescribe medicines to treat infections, hormonal imbalances, or erectile problems. These should only be taken exactly as prescribed. Never share or buy medicines online. For some men, surgery may be an option to repair blockages or varicoceles. If natural conception remains difficult, fertility treatments such as intrauterine insemination (IUI) or in vitro fertilisation (IVF) are available through specialist clinics.
When is surgery considered?
Surgery may be recommended to repair a varicocele, clear a blocked sperm duct, or retrieve sperm directly from the testicles for assisted reproduction.
Living with this condition
Living with infertility can feel like a rollercoaster. Give yourself time and space to process the challenges. Track your appointments and keep an open conversation with your partner.
Lifestyle tips
- Stay active with activities you enjoy, such as walking, cycling, or swimming.
- Follow a Mediterranean-style diet rich in vegetables, fruits, nuts, and whole grains.
- Prevent testicular overheating by wearing looser underwear and avoiding long hot baths.
- Get 7 to 9 hours of sleep each night and keep regular sleep times.
- Reduce stress through hobbies, mindfulness, or counselling.
Diet and exercise
Research suggests that diets rich in antioxidants from fruits and vegetables may support sperm health. Include foods like berries, leafy greens, nuts, and fish. Avoid excess saturated fats, sugary drinks, and processed snacks. Exercise helps maintain a healthy weight and lowers stress, but very intense training may hurt sperm count, so aim for moderate activity.
Mental health and emotional wellbeing
Infertility can bring sadness, guilt, anxiety, and strain on your relationship. These feelings are normal. It is important to acknowledge them and not blame yourself.
Prevention
Not all causes of male infertility can be prevented, but many can. The most effective steps are avoiding smoking, limit alcohol, staying at a healthy weight, protecting your testicles from heat and injury, and getting treatment for any sexual infections early.
Vaccines
There are no vaccines for male infertility, but keeping up to date with your recommended vaccines can prevent infections like mumps, which can occasionally harm the testicles.
Screening programmes
There is no standard screening test for male infertility. Regular health check-ups can help find conditions such as diabetes or high blood pressure that may affect fertility.
Complications
If left untreated
- If an underlying cause is not addressed, the chance of conception may stay low without help.
- Some hidden conditions, such as testicular cancer or an infection, can become more serious if not treated.
Long-term outlook
The outlook is often better than people expect. Around 1 in 7 couples with fertility problems go on to have a child, many with minimal help. Thanks to modern treatments, the possibilities are greater than ever, and early medical advice gives you the best chance.
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Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
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Sources and guidance
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 31, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.