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Infertility and IVF

What factors affect IVF success?

September 9, 2026 · 4 min read

What factors affect IVF success?

IVF success does not depend on a single factor; it results from a combination of many. No clinic can guarantee a definite outcome.

Main factors

  • The woman's age: the number and quality of eggs can decline with age.
  • Ovarian reserve and response: the response to stimulation varies from person to person.
  • Sperm quality: count, motility and shape affect fertilisation.
  • Embryo quality: laboratory conditions and embryology experience matter.
  • Uterine health: the structure of the womb and the state of the endometrium
  • Accompanying conditions: hormonal problems, endometriosis and similar

Lifestyle

Weight, smoking, alcohol, stress and diet can have some influence; adjusting them as your physician advises is helpful.

Managing expectations

Some couples need more than one attempt. Emotional support and open communication ease the process.

For information about your personal chances, see a reproductive health specialist.

This article is general information; diagnosis and treatment decisions are always made after a physician's examination.

This article is general information, not a diagnosis or treatment recommendation. Consult a physician for a personal assessment.

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