A nutrition programme designed for you
Partner with a registered dietitian and nutritionist in London to create a plan tailored to your unique needs, so you can feel confident and connected to your body again.
Every woman's story deserves to be heard
You are unique, and we believe your nutrition plan should be, too. At Third Sister, we go beyond diets to truly understand your story, and provide personalised strategies for your specific needs.
Whether you’re navigating complex symptoms, seeking sustainable lifestyle changes, or simply looking for clarity in your nutrition, our programmes combine the clinical expertise of a registered dietitian with a holistic approach to treat the big picture and achieve lasting results.
Whether you’re navigating complex symptoms, seeking sustainable lifestyle changes, or simply looking for clarity in your nutrition, our programmes combine the clinical expertise of a registered dietitian with a holistic approach to treat the big picture and achieve lasting results.
Services
We offer a range of personalised nutrition programmes to meet you where you are. Each program is designed and delivered by our founder, Clementine Vaughan, a registered dietitian and nutritionist in London.
Keep scrolling or click one of the options below to learn more:
Who we work with
Our customised nutrition programs are designed to help women navigate a range of health challenges. We specialise in:
- PCOS and hormonal health
- Menopause
- Weight management
- Medicalised weight loss support (during and after)
- Postpartum nutrition
- Endometriosis
- SIBO and other gut-related issues
- Family nutrition
- Building sustainable, healthy routines
If your concern isn’t listed here, get in touch—we’ll work with you to create a plan that fits your needs.
Curious about dietitian and nutritionist costs in the UK? Learn more in our blog post:
3-month Programme
A short-term programme for focused goals such as managing symptoms, creating sustainable lifestyle changes, or improving overall health.
Includes:
*Follow-up sessions are generally recommended every two weeks, but can be taken within 6 months of programme start.
Includes:
- A 60-90 minute in-depth initial assessment
- Personalised diet plan and program roadmap, including any recommended tests or analyses (additional costs apply for tests)
- Personalised educational material to empower your health journey
- 5 x 60-min follow-up sessions*
- Ongoing 1-on-1 instant messaging or email support during working hours to answer your questions, track your progress, and make any adjustments to your program
- Shopping list and recipe suggestions
- Direct communication with other medical health practitioners if needed
*Follow-up sessions are generally recommended every two weeks, but can be taken within 6 months of programme start.
6 sessions total
6-month Programme
Ideal for long-term transformation, offering sustained support for symptom management, behavioural changes, and overall well-being.
Includes:
*Follow-up sessions are generally recommended every two weeks, but can be taken within 9 months of programme start.
Includes:
- A 60-90 minute in-depth initial assessment
- Personalised diet plan and program roadmap, including any recommended tests or analyses (additional costs apply for tests)
- Personalised educational material to empower your health journey
- 11 x 60-min follow-up sessions*
- Ongoing 1-on-1 instant messaging or email support during working hours to answer your questions, track your progress, and make any adjustments to your program
- Shopping list and recipe suggestions
- Direct communication with other medical health practitioners if needed
*Follow-up sessions are generally recommended every two weeks, but can be taken within 9 months of programme start.
12 sessions total
Medicalised Weight Loss Support
Tailored for clients using weight loss medications, offering expert support through every phase, including post-medication maintenance.
Includes:
*Follow-up sessions are generally recommended every two weeks, but can be taken within 12-18 months of programme start.
Includes:
- A 60-90 minute in-depth initial assessment
- Personalised diet plan based on medication protocol
- Roadmap for support during medication phase, transition off the medication and long-term weight loss maintenance without medication
- Recommended tests or analyses (additional costs apply for tests)
- Personalised educational material to empower your health journey
- 11–23 x 60-min follow-up sessions*
- Ongoing 1-on-1 instant messaging or email support during working hours to answer your questions, track your progress, and make any adjustments to your program
- Shopping list and recipe suggestions
- Direct communication with other medical health practitioners if needed
*Follow-up sessions are generally recommended every two weeks, but can be taken within 12-18 months of programme start.
12-24 sessions total
Add-on Sessions
Available for existing clients to make updates to their plans or address new health goals.
Includes:
Includes:
- 1 x 60-minute follow-up session
1 session total
Online and In-Person Dietitian Consultations
Whether you’re local to London or based elsewhere, Third Sister offers flexible options to fit your lifestyle. Our consultations are available online and in-person. Both options provide the same high level of care and support, ensuring you receive expert guidance wherever you are:
Online and In-Person Dietitian Consultations
Whether you’re local to London or based elsewhere, Third Sister offers flexible options to fit your lifestyle. Our consultations are available online and in-person. Both options provide the same high level of care and support, ensuring you receive expert guidance wherever you are: