Conditions that affect fertility
A diagnosis is a starting point. These pages set out what each condition means for fertility and what the guidelines say about it, including where the evidence is limited.
Many couples arrive with a label already: PCOS, a low AMH, endometriosis, or the word “unexplained”. Each page explains what the label means, how it is usually confirmed, and what it may change.
The pages are general education with their sources listed. They are not a substitute for a consultation about your own situation.
PMOS (formerly PCOS)
A common hormonal condition, its newer name, and fertility.
Low ovarian reserve
What the tests of ovarian reserve measure, and what they do not.
Unexplained infertility
When the standard tests are normal and pregnancy has not happened.
Endometriosis
Pain, periods and fertility: what the guidelines say.