Dr Sophie Lester, Registered Nutritionist
Balancing expertise with compassion and care
Your Endo Nutritionist is a sister brand of Her, dedicated to advancing nutrition support for those living with endometriosis, combining both scientific expertise and lived experience.
Founded and led by Dr Sophie Lester (RNutr) — a registered nutritionist, lecturer, and published researcher with over 20 years of endometriosis lived-experience.
Endometriosis is a whole-body condition that affects how you eat, move, and feel every day. That’s why Your Endo Nutritionist combines cutting-edge research with practical, compassionate guidance to help you manage symptoms, support ongoing treatment, and improve quality of life.
Understanding endometriosis
Empowering you with the knowledge and strategies to live well.
Endometriosis affects around 10% of women and those assigned female at birth, yet the disease is still largely misunderstood; causes of endometriosis are still unclear and treatment options are limited. It is no wonder that finding the right knowledge and care can feel overwhelming and confusing - but you don't need to navigate it alone.
At Your Endo Nutritionist, we transform cutting-edge research into clarity and practical strategies. Through one-to-one consultations, advocacy, research, and education, we lead the way in nutritional science specifically for endometriosis care.
Our mission is simple, to turn evidence into action, giving you the knowledge and guidance to feel more comfortable, confident, and reassured in your body
What is endometriosis?
Endometriosis is a chronic, whole-body, inflammatory condition where tissue similar to the lining of the uterus grows in other areas of the body, such as the pelvis, bladder, bowel, or beyond.
This tissue responds to hormonal changes, triggering inflammation, irritation, pain. Over time, it can lead to scar tissue and adhesions. In some cases, endometriosis can grow into other organs (deep infiltrating endometriosis) or may form cysts (endometrioma) in the ovaries.
Endometriosis can affect anyone that has, or previously had, a womb.
Content last reviewed: February 2026
What are the symptoms of endometriosis?
Everyone experiences endometriosis differently. For some, symptoms are mild, but for many others they are severe and life-altering.
Common symptoms can include:
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Heavy periods, often involving frequent changes of menstrual products or passing large clots
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Painful periods, intense enough to affect normal activities such as work or exercise
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Pelvic pain outside of menstruation
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Pain with bowel movements or urination
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Pain in other areas, such as the lower back or legs
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Digestive symptoms, including bloating, constipation, or nausea
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Pain during or after sex
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Fatigue (extreme tiredness)
If you present with any of these symptoms, it is important to make an appointment to see your doctor as soon as possible.
Content last reviewed: February 2026
What causes endometriosis?
We don't yet know what causes endometriosis, but research suggests it may involve a combination of genetic, immune, hormonal, and inflammatory factors.
What’s clear is that endometriosis is not your fault, it’s a complex medical condition and not caused by lifestyle choices.
Content last reviewed: February 2026
How do I get an endometriosis diagnosis?
If you think you may have endometriosis, start by speaking to your GP. They can refer you to a gynaecologist or specialist for further assessment. You may be offered imaging scans such as an ultrasound or MRI, though it’s important to note that not all types of endometriosis show up on imaging scans.
The gold-standard method for diagnosis is a surgical procedure called a laparoscopy. This procedure allows specialists to see endometriosis directly. In some cases, the specialists will biopsy or remove endometriosis tissue during the procedure.
Content last reviewed: February 2026
How do
you treat endometriosis?
Endometriosis is a chronic, long-term condition so requires long-term management. As endometriosis affects everyone differently, treatment can depend on your symptoms, life stage, and preferences. Management usually works best when combining medical care with evidence-based lifestyle support.
Options can include:
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Hormonal treatments, such as the contraceptive pill or GnRH analogues, to suppress the menstrual cycle
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Surgery, particularly laparoscopic excision, to remove visible endometriosis tissue from the body
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Pain management, including physiotherapy or medications
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Lifestyle approaches, such as gentle exercise, nutrition support, and stress management, to complement medical treatment and improve quality of life.
Content last reviewed: February 2026
How can nutrition
help with endometriosis?
Endometriosis doesn't just affect one thing - it can impact your whole body. For most, food plays a big role in how you feel each day, but everyone experiences endometriosis differently. What's more, with so much conflicting information out there, navigating diet and nutrition with endometriosis can feel like a minefield.
From choosing supportive foods to managing gut symptoms, to navigating supplements, alcohol, caffeine, nutrient deficiencies, and additives, what you eat can either help calm symptoms or trigger flares and inflammation. For some, endometriosis can also affect fertility, making whole-body nutrition support even more important.
The good news? Small, consistent changes to your nutrition and lifestyle can make a real difference. Supporting your gut, easing pain, discovering your optimal energy, managing weight, and feeling stronger overall can help you regain control over those debilitating symptoms.
Working with a nutritionist at Your Endo Nutritionist means discovering what works for you. Together you'll identify trigger foods, reduce flares, and build habits that support you day to day. At Your Endo Nutritionist, we keep up with the latest endometriosis research as it emerges, so you'll always get the most current, evidence-based, bespoke support.
Content last reviewed: February 2026
What conditions are related to endometriosis?
Endometriosis is often linked with other chronic or inflammatory conditions, including:
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Migraines
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Autoimmune disorders
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Chronic fatigue syndrome (CFS/ME)
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Fibromyalgia
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Irritable bowel syndrome (IBS)
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Adenomyosis
These overlapping conditions can make symptom management complex, which is why personalised care, and considering the whole body, is so important.
Content last reviewed: February 2026
Where can I get support for endometriosis?
If you are in the UK, you first port-of-call should be your GP. Endometriosis can be an overwhelming and emotional condition, so this first visit may feel daunting. It may be helpful to take someone with you for support, write down your symptoms beforehand, and/or keep a pain and symptom diary to demonstrate the full impact the condition has on your life.
Endometriosis UK offer a symptom checker on their website that can generate a letter to bring to your GP appointment. Remember you are always entitled to a second opinion if you are not satisfied with your plan following your appointment. The National Institute for Clinical Excellence (NICE) guidance is publicly available, helping you understand the diagnosis and treatment pathways along with the standard of care you should receive.
A next step may be to see a consultant or gynaecologist who specialises in endometriosis; your GP may refer you, or you can request a referral directly.
There are also many self-management opportunities for you. The book 'Endometriosis' (2025) by Jen Moore supports self-advocacy and education. Endometriosis UK provides advice, information and webinars along with a Nurse Support Helpline. The Endometriosis Foundation also provide accurate information and an option to book a call with a nurse to discuss your symptoms, answer, questions, and support you in taking the next steps in your healthcare journey.
Understanding your body's nutritional needs can be a powerful step in your journey towards living well with endometriosis. At Your Endo Nutritionist, we provide evidence-based nutrition and dietary information, alongside one-to-one consultations, advocacy and education to support you each step of the way.
Content last reviewed: February 2026