There are multiple causes of infertility affecting both women and men; you can find information on the most common ones here.

Infertility is when a couple cannot get pregnant (conceive), despite having regular unprotected sex. According to the World Health Organisation infertility is

a disease of the reproductive system defined by the failure to achieve a clinical pregnancy after 12 months or more of regular unprotected sexual intercourse.

Around one in six couples in the UK will experience difficulties conceiving.This equates to approximately 3.5 million people across the country and around 84% of those will successfully conceive after trying for 12 months. If you haven’t been successful after 12 months of trying you should consult your GP and if you are aged over 35 or know that you have a fertility problem, you should seek help earlier.

There are many potential causes of infertility, with fertility problems affecting the male as well as the female partner; often both partners are affected. However, sometimes it can be difficult to find the cause of fertility problems: this is known as unexplained infertility.

We have listed some of the conditions which can affect your fertility and provided additional information and links to other professional organisations. If you can’t find the information you are looking for, or would like to suggest we include information on a specific issue, please do contact us at

Please see below for our Fertility Conditions factsheets.

Ashermans Syndrome

Cervical Mucus Problems


Cystic Fibrosis

Ectopic Pregnancy



Male Factor Fertility Issues


Ovarian Hyperstimulation Syndrome

Ovulation Defects

Polycystic Ovary Syndrome (PCOS)

Premature Ovarian Insufficiency

Secondary Infertility

Tubal Damage

Unexplained Infertility