GLP-1 NUTRITION SUPPORT
HELPING WOMEN THRIVE ON GLP-1 WEIGHT LOSS MEDICATION
Starting a GLP-1 medication is a powerful step, but true, lasting health transformation requires the right nutritional foundation. We help you manage side effects, preserve lean muscle, and establish sustainable eating habits so you can feel your best and thrive long-term.
As a GLP-1 dietitian specialising in gut health, I help women manage digestive side effects, nourish their bodies, and build habits that hold up long after the medication stops.
- Reduce gut side effects
- Protect muscle
- Eat with confidence
- Get through the weight loss plateau
- Build habits that outlast the medication
- Avoid stopping treatment before you're ready to
You Might Be Here Because...
- You've recently started Mounjaro®, Wegovy® or Ozempic® .
- Your digestive symptoms are making treatment difficult.
- You're unsure what you should actually be eating now that your appetite has changed.
- You're worried you're losing muscle along with the weight.
- You have IBS or an existing digestive condition that's become worse.
- You’ve hit a plateau and any amount of food restriction is not moving the needle any further.
- You're a woman stopping GLP-1, or thinking about it, and you're worried about weight gain after GLP-1 undoing the progress you've made.
- You've already come off it and the food noise is coming back and you're looking for real support keeping the weight off after GLP-1.
- You want support based on evidence, not whatever's trending on Instagram or TikTok.
Losing weight shouldn't mean feeling unwell.
- Persistent nausea
- Constipation and bloating
- Diarrhoea
- Reflux
- Sulphur burps
- Difficulty eating enough protein
- Fatigue
- Muscle loss
- Hair loss and/or dry skin
- Food anxiety
Many women are told these symptoms are "normal. "Common doesn't mean you have to struggle through them. With the right nutrition strategy, many side effects can be improved while helping you stay nourished and continue making progress.
you shouldn’t have to suffer to achieve your goal
Weight loss is only one part of the journey.
Third Sister’s unique GLP-1 THRIVE protocol supports the 6 critical needs:
Tolerate
Hydrate & Heal
Rebuild
Instil Habits
Value Your Health
Exit Well
TRUSTED BY
Meet the dietitian behind Third Sister
Clementine Vaughan, Msc Nutr, PG Dip RD
Hi, I’m Clem, a registered dietitian based in London. Growing up in a British-French household where meals were an important meeting point for our family, I learnt early on that food has the power to connect and heal. As the youngest of three sisters, I understand the great value of shared wisdom and support.
After facing my own health challenges and finding the support I needed from family, friends, and professionals, I turned my deep love for food and background in dietetics and nutrition into a career dedicated to helping women heal. You can see me as a partner, confidante, and sister in your health journey.
Choose the support that suits you.
Free GLP-1 Meal Guide
Get your free guideGLP-1 Success Academy
Explore the GLP-1 AcademyPersonalised 1:1 Dietitian Support
Book Your Assessment ConsultationThe Complete GLP-1 Transformation
Achieve sustainable, long-term weight health with our medical-grade GLP-1 support program. We combine clinical medication plans with highly personalized coaching and targeted personal training to set you up for ultimate physical vitality.
Book Your Assessment Consultation
Most providers only focus on weight loss.
What Women are Saying
Ana Belen
2 months ago
Clementine is a very knowledgeable and confident nutritionist. She helped me
to understand a realistic nutritional intake and how to improve it. She setted achievable targets and we implemented on my own pace. We finished our session having a clear chart of my aims that helped me to keep on track.
Ana
Sam Franks
3 months ago
Really positive experience all around!
Sneha Krishnan
5 months ago
Clem has been absolutely wonderful. She’s been knowledgeable, caring, and really listened to me. Her advice has helped me enormously and I can’t recommend her enough
Julianne Holmes
5 months ago
I would highly recommend Clementine for her advice about diet. I think she is an excellent Dietician as she helped me with my health. I have gastritis and this has caused bloating, which I've had for about 3 years, but after Clementine's advice, the bloating stopped. This has been brilliant. Thank you so much Clementine.
Elizabeth B
6 months ago
Clementine is thoughtful and very thorough. She offered great insight, was honest regarding things she wasn’t 100% sure about, and left me with some excellent suggestions on how to approach my health concerns. Would highly recommend!
Francesca Nuti
7 months ago
Clementine's guidance was both knowledgeable and reassuring, and it really helped me feel more confident managing my condition, especially after surgery. I’m very grateful for her suggestion of hypnotherapy and her advice on my diet and where it can improve. I would highly recommend her to anyone who needs an understanding approach to an often complex circumstance.
Charlotte Osborne
7 months ago
I have been having sessions with Clem for the last 6 months. She has a very refreshing approach to weight loss, looking holistically at everything from sleep and hormones, to mindset and movement. I feel really supported and listened to and have managed to lose 5kg so far. I have learnt a lot and had many unhelpful habits broken, I would highly recommend reaching out to her if you've been struggling on your own and need some support and guidance.
Sofia Mendes
9 months ago
Clementine is a thoughtful, knowledgeable, and supportive dietitian. Over the last few months, she has really helped me reflect on my eating habits and rethink what, when, and how much I eat. She also provided additional, fully customised information tailored to my needs. In the short time I’ve worked with her, I can already see and feel a real improvement in myself. I couldn’t recommend her highly enough.
Amber S
10 months ago
Working with Clem has been amazing, I’ve learnt so much! After struggling with digestive discomfort and suspected PCOS (Insulin resistance), Clem listened to my concerns and made a plan of action best suited to me. In the last couple of months I’ve noticed a huge difference. I feel so much better overall not only physically but also feel like my mindset when it comes to meals has changed. She takes the time to explain everything in detail and there’s no silly questions. I would highly recommend Clem to anyone!