Women with endometriosis to benefit from dedicated fertility pathway under landmark new NICE guidance

Women with endometriosis who are struggling to conceive are to benefit from a dedicated fertility treatment pathway for the first time, under landmark new guidelines from NICE – published to coincide with the final day of Endometriosis Action Month. 

The updated NICE fertility guideline includes a brand-new section specifically for endometriosis, a direct result of feedback received during public consultation, recognising for the first time that the condition requires its own tailored approach to fertility care, separate from other causes of infertility. 

Endometriosis affects around 1.5 million in the UK. It occurs when tissue similar to the lining of the womb grows in other parts of the body and is one of the leading causes of fertility problems. Despite its prevalence, many patients have historically faced confusion and inconsistency when trying to access fertility treatment. 

This year's Endometriosis Action Month theme is 'Endometriosis Doesn't Wait' — a message that resonates directly with today's guideline. While the updated NICE guideline cannot address diagnosis delays alone, it sends a clear signal that once endometriosis is diagnosed, patients should no longer face additional barriers when trying to start a family. 

Listening to patients and clinicians: what changed as a result of consultation. 

The dedicated endometriosis section was added to the final guideline after NICE's independent committee carefully considered feedback from patients, patient groups, clinicians and professional bodies. 

Endometriosis UK and others told NICE during consultation that endometriosis was being grouped with unexplained infertility, despite it being a diagnosed condition. The committee agreed this was inappropriate and that endometriosis requires a distinct fertility pathway. 

Respondents also told NICE that terms such as "mild" and "severe" endometriosis were clinically ambiguous and did not reflect the complexity of the condition or its impact on fertility. The committee agreed and these terms have been removed from the final guideline. 

A clearer, more personalised pathway 

Under the new recommendations, clinicians will discuss a range of options, with patients with endometriosis who are trying to conceive, taking into account individual factors including how long they have been trying to conceive, the severity of their symptoms, their age, their ovarian reserve, and any male fertility factors. 

The guideline sets out a clear treatment pathway. Where appropriate, expectant management (time to try to conceive naturally), may be offered, or surgical treatment to address endometriosis, in line with NICE's existing endometriosis guideline (NG73). If neither approach is suitable or successful after 2 years, fertility treatment options including intrauterine insemination (IUI) or IVF will be discussed. 

Supporting the shift to personalised, community-based care 

The new guidance supports the ambitions set out in the NHS 10 Year Health Plan, which commits to shifting care closer to home and empowering patients and professionals to make the best choices about treatment. Setting out a clear, personalised pathway in the guideline for endometriosis, helps ensure fertility services are better tailored to individual need, reducing variation in care and supporting equitable access across England. 

Eric Power, interim director of the Centre for Guidelines at NICE, said: "For too long, women with endometriosis who wanted to start a family have navigated a fertility system that did not fully recognise the distinct challenges their condition presents. This new guidance changes that. 

"We listened carefully to what patients, clinicians and patient groups told us during consultation.  They described how complex endometriosis is, how they felt existing labels were misleading, and that the condition needed its own pathway. The committee agreed and acted on that feedback. 

"By creating a dedicated section for endometriosis, we are giving clinicians a clear, evidence-based framework to have better, more personalised conversations with their patients, ensuring that everyone, regardless of the cause of their fertility problems, has access to the right care at the right time." 

Lucy Common, nursing adviser at NICE, said: "Nurses are often the first point of contact for people concerned about their fertility, and they play a vital role in making sure patients feel heard, informed and supported at every step of what can be a deeply emotional journey. 

"The committee's recommendations give nurses and other healthcare professionals a clearer, more personalised framework to have those conversations, particularly with those living with endometriosis, who have too often been left without a clear pathway to follow. For the first time, nurses can point to dedicated, evidence-based guidance that truly reflects the complexity of the condition and the individual needs of the person in front of them." 

Emma Cox, chief executive of Endometriosis UK, said: "This year's Endometriosis Action Month theme is 'Endometriosis Doesn't Wait' - and our new State of Endometriosis Care report shows just how urgently change is needed. With average diagnosis times now standing at 9 years and 4 months — and 11 years for those from ethnically diverse communities — many have already waited far too long by the time they reach fertility services. 

"Today's guidance marks a step change in the fertility support that anyone with endometriosis should receive. For years, those with endometriosis have told us they felt invisible within the fertility system - grouped with unexplained infertility despite having a diagnosed condition. We welcome NICE's decision to listen to patient voices during consultation, to create a dedicated pathway, and to remove misleading labels like 'mild' and 'severe' endometriosis. 

"Endometriosis doesn't wait. And now, at last, neither will the guidance." 

Sanchia Alasia, trustee and support group leader for Endometriosis UK said:  

"I have lived with endometriosis for many years and have been through a number of IVF treatments. Because my endometriosis also affects my bowel, I required care from a multidisciplinary team - including a bowel surgeon, fertility consultant, and endometriosis specialist. Having coordinated input from all these clinicians was crucial in helping me understand my options and ensuring that decisions about fertility treatment took the full complexity of my condition into account. 

“Not everyone has access to this level of joined up care, and navigating the fertility system with endometriosis can be confusing and overwhelming. That is why the updated NICE guidance is such a welcome development. It provides clearer, more consistent direction so patients can be placed on the right fertility pathway sooner, with recognition of how endometriosis can affect multiple systems and require multi specialist involvement. 

“I hope these changes lead to earlier clarity, better coordination, and a more supportive experience for others beginning their fertility journey." 

The guideline also includes a small number of other updates confirmed following consultation, including stopping fertility clinics from offering unproven add-on treatments, and broadening access to NHS-funded fertility preservation beyond cancer patients. 

-Ends-

Contact information

NICE
0797 397 0534
pressoffice@nice.org.uk

An embargoed copy can be downloaded here NG257 Fertility problems EMBARGOED UNTIL 00.01 31 MARCH 2026.docx

NICE guidelines apply to England, Wales and Northern Ireland. Putting recommendations into practice can take time. How long will vary from guideline to guideline, and will depend on how much change in practice or services is needed. Implementing change is most effective when aligned with local priorities. When exercising their judgement, professionals and practitioners are expected to take this guideline fully into account, alongside the individual needs, preferences and values of their patients or the people using their service. It is not mandatory to apply the recommendations, and the guideline does not override the responsibility to make decisions appropriate to the circumstances of the individual, in consultation with them and their families and carers or guardian. 

To contact Sanchia Alasia please contact Endometriosis UK  press@endometriosis-uk.org 07775 451 549.   

About endometriosis:  

Endometriosis affects approximately 1.5 million people in the UK. It occurs when tissue similar to the lining of the womb grows elsewhere in the body, most commonly around the ovaries, fallopian tubes and pelvis. It is one of the leading causes of fertility problems. 

About the guideline:  

This guideline updates and replaces NICE guideline CG156, published in February 2013. It was developed by an independent guideline committee following a public consultation that ran from 10 September to 21 October 2025. The committee considered responses from patients, clinicians, NHS commissioners and professional bodies.