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31 March 2025

How can you tell if your husband is infertile?

31 March 2025
Updates

How can you tell if your husband is infertile?

Professor Poonsak Suchanavanich responded to this case, stating that if a woman has had children with her previous husband but is now living with a new husband and hasn't been able to conceive as easily as before, despite trying naturally for several years, the process of investigating the cause of infertility is essentially the same for everyone.


The method that Dr. Ton recommends is:

Semen analysis: The quality of sperm is determined by four factors:

  1. Volume of semen per ejaculation: This is important because when intercourse occurs, the sperm in the vagina needs to dissolve and combine with the cervical mucus, swim through the cervix, and then travel up through the uterus and fallopian tubes to meet the egg at the end of the fallopian tube.

  2. Sperm concentration: Normally, there should be 15 million sperm per milliliter of semen. If there is a sufficient number of sperm, they will be able to swim toward the destination.

  3. Sperm motility: The sperm need to move properly for successful fertilization.

  4. Sperm head morphology: The head of the sperm contains the genetic material and must be of normal shape for successful fertilization.

Preparation before the test:

  1. Refrain from ejaculation for at least 5-7 days before the test.

  2. Ensure adequate rest.

It is not recommended to withhold ejaculation for too long before the test. While it may result in a higher sperm count, the sperm may be old, and therefore may not be able to swim properly. This can lead to abnormal test results, even though the sperm may simply be aged. On the other hand, if ejaculation was only recently performed, there may be fewer new sperm produced. This could result in a low sperm count. Therefore, to ensure accurate results, it is important to refrain from ejaculation for about 5-7 days before the sperm quality test. This will provide more reliable data.

How can you know if you are infertile?

  1. The amount of semen released is lower than normal.

  2. No sperm is found in the semen.

  3. The sperm is deformed and unable to fertilize an egg.

If any of these three symptoms are present, the doctor will diagnose infertility.

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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
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