19 August 2026TechnologyAdvicePreparation
12 min read

Author: Vira Mykytiuk

Causes of infertility in men and women

Where diagnosis begins

A couple is only told they are infertile after one year of regular intercourse without contraception. In most cases it is not a verdict — it is a reason to act clearly and in order.

Roughly 37% of cases come from male infertility, 33% from female, 21% from both partners, and in only 9% the cause stays unexplained.

Both partners are always examined. Starting with one means losing six months.

The first consultation takes about an hour
The first consultation takes about an hour

Causes of male infertility

Cause no. 1 — obstructive

Fertility drops because of congenital features or injuries to the vas deferens, together with problems of ejaculation:

  • prostatitis
  • retrograde ejaculation
  • narrowing of the vas deferens
  • vasectomy
  • varicocele

Cause no. 2 — secretory

The count and the quality of the sperm change:

  1. azoospermia — no sperm in the semen
  2. oligozoospermia — lowered concentration
  3. asthenozoospermia — lowered motility
  4. teratospermia — under 30% normal morphology

Who guides the couple at this stage

What the work-up looks like

The full list of tests and timings is on the reproductive medicine page; below is what it looks like in the lab.

  • The embryology laboratory

    The embryology laboratory

  • Consultation before the protocol

    Consultation before the protocol

We explain the results in plain words — no abbreviations and no rush.

What to bring

  • your passport
  • earlier test results
  • discharge notes, if you had surgery
Ready to plan for what comes next?We reply in about 15 minutes and find a time that suits you.Book an appointment

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