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Marylebone Diagnostic Centre > Our Latest Blog Posts > Health > What Are the Main Causes of Infertility in Women and Men?
Check Infertility in Women and Men in London

What Are the Main Causes of Infertility in Women and Men?

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Infertility affects around 1 in 7 couples in the UK. If you are struggling to conceive, you are not alone. At Marylebone Diagnostic Centre, 73 Baker Street, London W1U 6RD, we offer advanced fertility screening tests for both men and women. Our aim is to identify causes early and help you move forward with confidence.

What Does Infertility Mean?

Infertility is when a couple cannot conceive naturally after 12 months of regular, unprotected sex (or 6 months if the woman is over 35).

It can affect either partner, which is why a fertility MOT London is essential for both men and women.

Explore our Men & Women Health Fertility Profiles for a complete fertility assessment.

Book Your Fertility MOT in London Today!

Main Causes of Infertility in Women

  1. Ovulation disorders
    • Irregular or absent ovulation due to PCOS, thyroid problems, or hormonal imbalance.
    • PCOS infertility is one of the most common reasons women struggle to conceive.
  2. Blocked fallopian tubes
    • Often caused by infection, pelvic inflammatory disease, or endometriosis.
  3. Endometriosis
    • A painful condition where tissue similar to the womb lining grows outside the uterus.
    • Strongly linked with infertility endometriosis cases.
  4. Age-related decline
    • Female fertility declines after 35, with fewer quality eggs available.
  5. Lifestyle factors
    • Smoking, alcohol, stress, and being underweight or overweight can all reduce fertility.

Main Causes of Infertility in Men

  1. Low sperm count or poor motility
    • Can result from lifestyle, genetics, or medical conditions.
  2. DNA damage
    • High DNA fragmentation affects sperm’s ability to fertilise an egg.
  3. Hormonal imbalance
    • Low testosterone or disrupted FSH/LH can reduce sperm production.
  4. Medical conditions
    • Varicocele, infections, or genetic disorders may impair fertility.

How Do I Check My Fertility?

Women’s Fertility MOT:

Includes AMH hormone test, ovarian reserve, thyroid, vitamin checks, and reproductive hormone profile.
Recommended if you have PCOS, irregular cycles, endometriosis, or are over 35.

Men’s Fertility MOT:

Includes semen analysis, sperm photographs, DNA fragmentation, testosterone, and hormone panel.
Recommended if you have been trying without success or want a fertility check for man.

Book your Fertility MOT and Screening Tests at MDC.

FAQs

How can I tell if I’m infertile?
Women: irregular or absent periods.
Men: abnormal semen analysis.
The only way to know for sure is through a fertility health check near me.
Why does infertility happen?
It may be caused by genetics, medical conditions, lifestyle, or age.
Will PCOS cause infertility?
Not always, but it can make natural conception more difficult. Early diagnosis and treatment improve success rates.
Can fertility be genetic?
Yes. A family history of early menopause, PCOS, or low sperm count can increase your risk.

Why Choose MDC for Fertility Testing in London?

  • Comprehensive fertility assessment London
  • Same-day Appointment for many tests
  • Advanced male and female fertility MOTs
  • Conveniently located at 73 Baker Street, W1U 6RD
Marylebone diagnostic centre main

We also provide guidance on fertility vitamins, lifestyle changes, and advanced fertility enhancers.

Book Your Fertility MOT in London Today!

Next Step – September slots filling fast. Limited daily appointments.

Book your Fertility MOT London today.
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