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Can Infertile Men Have Children?


18 May 2025
Updates

To conceive a child, both partners must have optimal reproductive health. However, infertility does not always stem from the female partner. In Thai society, one of the major causes of infertility is male infertility, whether it's congenital or due to surgical sterilization. Let’s explore the question: "Can a man who has had a vasectomy still have children?"

What causes male infertility?

1. Genetic causes:
Klinefelter’s Syndrome is a genetic condition affecting males. These men are usually tall, may have enlarged breasts, infertility, and sometimes intellectual disabilities. It affects about 1.3 per 1,000 males. The cause is an extra sex chromosome (XXY), making the total chromosome count 47 instead of the normal 46. Some severe cases may have 48 chromosomes (XXXY). Symptoms include:

  • Underdeveloped testicles
  • Reduced sperm production
  • Low testosterone levels
  • Small testicles
  • Decreased sexual desire and performance

There is currently no specific treatment for Klinefelter’s Syndrome, but in the future, gene therapy may help. Some men may still be able to produce sperm and should be evaluated individually upon reaching reproductive age.

2. Reproductive system abnormalities:

  • Low testosterone levels: Testosterone is essential for muscle growth, bone mass, and sperm production. Low levels can lead to low libido and impaired sperm production.
  • Injury: Trauma to the testicles may damage the sperm ducts or allow sperm to contact immune cells, leading to sperm destruction.
  • Nutritional deficiencies: Lack of vitamin E (a-tocopherol), found in leafy greens and plant-based oils, may result in infertility in men and higher miscarriage risk in women.
  • Lifestyle factors: Excessive alcohol increases estrogen levels, reducing sperm quality. Smoking introduces toxins that affect hormone levels and sperm count.
  • Stress: Chronic stress can lower sex hormone levels and reduce libido, affecting fertility.

3. Medical Sterilization (Vasectomy):

Vasectomy is a simple procedure done under local anesthesia. A small incision (about half a centimeter) is made in the scrotum. The vas deferens is pulled out, tied in two places, and cut to prevent sperm from mixing with semen. The process takes around 8–10 minutes and is performed on both sides.

How Can a Man Who Has Had a Vasectomy Still Have Children?

Q: If a man is infertile, how many methods are available to help him have children?
A: Doctors typically recommend four methodsPESA / TESE / TESA / MESA, which are procedures to retrieve sperm from the testicles. These are followed by assisted reproductive technology known as ICSI (Intracytoplasmic Sperm Injection).

The retrieved sperm from PESA / TESE / TESA / MESA is injected directly into the female partner’s egg using the ICSI technique. The fertilized egg is then cultured into an embryo in a lab. Once the embryo reaches the blastocyst stage, it is transferred into the woman’s uterus to allow for implantation and pregnancy.

Q: What is PESA?
A: PESA (Percutaneous Epididymal Sperm Aspiration) is a procedure where a needle is inserted through the skin into the epididymis (sperm storage duct) to aspirate sperm. The sperm is then used in the ICSI process.

Q: What is TESE?
A: TESE (Testicular Epididymal Sperm Extraction) involves surgically removing small pieces of testicular tissue, from which sperm cells are extracted. The sperm is then used in the ICSI process.

Q: What is TESA?
A: TESA (Testicular Sperm Aspiration) is a procedure where a needle is inserted directly into the testicle to aspirate sperm. The sperm is then used in the ICSI process.

Q: What is MESA?
A: MESA (Microsurgical Epididymal Sperm Aspiration) is a microsurgical technique to locate the sperm storage duct (epididymis), insert a needle, and aspirate sperm. The retrieved sperm is then used in the ICSI process.

Can every man undergo these procedures?

Only men who are completely infertile — meaning no sperm present in the ejaculate — are eligible. A sperm analysis and medical evaluation are required to confirm infertility. If viable sperm remain in the testicles, these procedures may help retrieve them for treatment.

“At Beyond IVF, we specialize in TESE + ICSI procedures to offer more treatment options for couples struggling with male infertility and to increase the success rate of pregnancy.”

For consultation, visit Beyond IVF
Or add us on LINE: @beyondivf to inquire further

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The Biological Clock

This tool indicates:

  • Natural conception per month if you have no fertility issues
  • IVF success rate at the same age
  • When to seek help after months of unsuccessful attempts

If you are concerned at any stage – we recommend booking a doctor appointment or a free nurse consultation. The sooner you make a plan the better your chances in the long term.

When to seek advice early

  • If you have polycystic ovaries, endometriosis, or have been through a cancer diagnosis; we recommend you get in touch quickly so we can talk you through all your options and give you the greatest possible chance of success.
  • If you’re a single woman considering motherhood in the future; it’s best to approach us early and consider egg freezing as this can be an option for you while you have a higher ovarian reserve and healthier eggs.
Set your age and the months you’ve been trying to conceive
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Your chance of having a baby per month for fertile couples
Your chance of having a baby per IVF cycle (if experiencing infertility)

Body Mass Index calculator

Being overweight or underweight can reduce fertility, so it is important to keep your body weight within the normal healthy range.

Body Mass Index (BMI) is an indication of your body weight and can be calculated by dividing weight by height. You should aim for a BMI of between 20 and 25, as this will optimise your chances of conception.

Woman’s BMI below 19

Even in these modern times, nature knows best. If a woman's BMI falls below 19, the body senses famine and ovulation is switched off to prevent the risk of having a baby with malnutrition. Excessive exercise can reduce body fat and increase muscle mass to a point where periods cease for the same reason. Risk of miscarriage is also increased in women with a low BMI.

Being underweight

If a woman's BMI falls below 19, the body senses famine and ovulation is switched off to prevent the risk of having a baby with malnutrition. Excessive exercise can reduce body fat and increase muscle mass to a point where periods cease for the same reason. Risk of miscarriage is also increased in women with a low BMI.

BMI’s greater than 30

This can reduce fertility by 50%. Pregnancy for women with a 30+ BMI is often associated with problems such as maternal diabetes, high blood pressure, big babies and increased risk of caesarean section.

Add your height and weight to calculate your BMI