Nutrition Diets Clinic Reviews 40

TrustScore 4.5 out of 5

4.5

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Rated 5 out of 5 stars

Carmen set me up with a very detailed detox plan with lovely recipes, plenty of support to follow it, and of course the supplements as well. This was with the goal to support fertility, prepare my bod... See more

Company replied

Rated 5 out of 5 stars

After my partner spent six months searching for answers for her alopecia, finding Carmen was a total game-changer. The testing process (DUTCH Plus Complete Test and Comprehensive Stool Test GI... See more

Company replied

Rated 2 out of 5 stars

I saw Carmen for several months, over the course of this time I sent multiple emails expressing concerns that my symptoms were getting worse . My concerns were brushed aside or dismissed as a normal... See more

Company replied

Rated 5 out of 5 stars

Carmen has been fantastic. She's really helped me understand what I eat by keeping a long-term food diary. You can clearly see trends and how stress affects the gut, which then affects everything else... See more

Company replied

Company details

  1. Medical Clinic
  2. Alternative Medicine Practitioner
  3. Health Consultant
  4. Nutritionist
  5. Women's Health Clinic

Written by the company

Nutrition Diets Clinic is the UK's leading online Functional Medicine and gut clinic, specialising in a range of health conditions from gut health (IBS, SIBO, leaky gut), to food allergies, and skin issues (eczema, psoriasis, rosacea). Identify and treat the root cause of your symptoms with personalised nutrition & lifestyle medicine, and functional health tests. Our online one-to-one nutrition consultations and personalised therapy plans provide flexible and high-quality healthcare, empowering you to take control of your health, whenever and wherever suits you. Our user-friendly, at-home comprehensive health tests provide the answers you are looking for, and cover a range of health concerns digestive complaints and autoimmunity, to hormonal and fertility issues. Founded by fully qualified Functional Medicine nutritionist & gut health dietician Carmen Martinez-Vidal, we deliver expert clinical support to the comfort of your home. *** Book a free 15-minute Discovery Call to begin your health journey today ***


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4.5

Excellent

TrustScore 4.5 out of 5

40 reviews

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Rated 5 out of 5 stars

Pre-pregnancy detox

Carmen set me up with a very detailed detox plan with lovely recipes, plenty of support to follow it, and of course the supplements as well. This was with the goal to support fertility, prepare my body and get into my best possible condition for a second pregnancy. I am happy to report that I had a very healthy and straightforward pregnancy and most notably my energy levels throughout (apart from those first few weeks with nausea and tiredness) were so much better than the first time round, even with a toddler to take care of. Postpartum has been immeasurably better and easier this time too, and I'm sure this is because I "prepared the nest" so well that my recovery has been way less intense. I'm so happy we were able to work together to make this pregnancy a more positive experience. Thank you Carmen for all of your amazing support and wisdom, and also for the personal touches, checking in and making sure we are all ok. I would recommend you to anyone in a heartbeat.

June 1, 2025
Unprompted review
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Reply from Nutrition Diets Clinic

Dear Helen,

Thank you for sharing your experience.

It was a privilege to support you in preparing for your second pregnancy.

I have always believed that taking time to prepare the body before conception is one of the greatest investments a woman can make in her own wellbeing, and it is wonderful to hear how positively you experienced both your pregnancy and postpartum recovery.

Wishing you and your family continued health and happiness, and thank you again for placing your trust in me during such an important chapter of your life.

Kind regards,
Carmen

Rated 5 out of 5 stars

Love Her!

After struggling with acne for the first time when I moved away to university, I decided to seek help from Carmen at Nutrition Diets Clinic, and I am so glad I did. My diet and routine had changed quite a lot and my skin really began to suffer, which was frustrating and affected my confidence. 

Working with Carmen was incredibly helpful. She took the time to understand what had changed in my lifestyle and suggested running a GI-MAP + Zonulin test to look more closely at my gut health. The results showed that my gut needed support and that I was not absorbing nutrients as well as I should, which can have an impact on skin health. Carmen helped me make realistic changes to my diet and daily habits while adjusting to university life. 

We focused on improving my gut health, balancing my blood sugar, supporting my hormones and managing stress. Everything was explained very clearly and in an easy-to  understand way. My skin has already improved and I feel much better overall. I am really grateful for Carmen’s knowledge, professionalism and support, and I would highly recommend Nutrition Diets Clinic.

October 22, 2025
Unprompted review
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Reply from Nutrition Diets Clinic

Thank you very much for your kind words, truly appreciate it, Hannah.

I am very pleased to hear that you are noticing improvements in both your skin and overall wellbeing. As we discussed, changes in diet, routine and stress can have a significant impact, so it was important to take a structured approach.

You have done very well in implementing the changes, particularly whilst adjusting to university life, which is not always easy.

Thank you again for sharing your experience, and I look forward to continuing to support you.

Kind regards,
Nutrition Diets Clinic

Rated 5 out of 5 stars

Carmen is a compassionate, brilliant practitioner who genuinely cares

After my partner spent six months searching for answers for her alopecia, finding Carmen was a total game-changer.

The testing process (DUTCH Plus Complete Test and Comprehensive Stool Test GI Map) was smooth, but what really stood out was Carmen’s ability to explain the results. She took incredibly complex language and medical data and made it clear and simple for us to understand. We finally felt like we had a roadmap rather than just a list of problems.

Her tailored supplement plan for gut health and sleep is clearly working. Recovery takes time, but the results are undeniable: my partner’s largest bald patch is no longer bald! Seeing hair grow back on all her patches has been a massive relief for both of us.

Carmen is a compassionate, brilliant practitioner who genuinely cares. We couldn’t recommend her more highly.

March 25, 2026
Unprompted review
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Reply from Nutrition Diets Clinic

Dear Adam,

Thank you very much for your kind and thoughtful review, I truly appreciate it.

I know how challenging it can be to go for months without clear answers, so I am very pleased that you both now feel you have a better understanding of what is happening and a structured plan to follow.

Your partner has been very consistent and engaged throughout, which is key when working through more complex cases. It is really encouraging to see the early signs of hair regrowth, and I look forward to continuing to build on this progress together.

Thank you as well for your support and involvement in the process, it truly makes a difference!

Warm regards,
Nutrition Diets Clinic

Rated 5 out of 5 stars

I can't recommend Carmen highly enough.

Carmen could not have been more helpful. The test kits were easy to use and quick to produce results, so I could get to work with Carmen, who was absolutely brilliant at translating everything into simple terms for me to understand.

I had a DUTCH test & GI Map + Zonulin to investigate potential reasons why I could be losing my hair (alopecia / patchy bald spots as well as thinning). I had a few areas that needed some TLC, and Carmen created a shopping list of suggested vitamins and supplements, with Natural Dispensary, to support my gut health and encourage better, deeper sleep.

I am happy to report that while recovering from alopecia isn't going to happen overnight, my hair is growing back!! My largest patch is around the size of a credit card - AND IS NO LONGER BALD :))... Which is a huge relief. The other patches (3), which are much smaller, only 1p, also now have small hairs coming through.

I could not recommend Carmen highly enough.

It took me a solid 6 months to find someone genuinely interested in helping me solve this problem and who approached it with the utmost compassion. I couldn't have asked for a better practitioner.

November 28, 2025
Unprompted review
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Reply from Nutrition Diets Clinic

Dear Beau,

Thank you very much for your thoughtful review and for sharing your experience.

Hair loss can understandably feel very distressing, so I was truly pleased to read that your hair is beginning to grow back in the areas that were previously affected.
As we discussed during your consultations, concerns such as alopecia often require patience and a step-by-step approach while supporting the body more broadly, so it is very encouraging to see these positive changes.

It was a pleasure working with you to review your DUTCH and GI-MAP results and to translate the findings into a clear and practical plan to support your gut health, hormonal balance and sleep.

Thank you again for your kind words and for placing your trust in my work.

I look forward to seeing how your progress continues over the coming months.

Warmest wishes,
Nutrition Diets Clinic

Rated 5 out of 5 stars

I first contacted Carmen at Nutrition…

I first contacted Carmen at Nutrition Diets clinic 5 months ago after struggling for a long long time with my digestive health. Carmen is extremely knowledgeable and reassuring and very easy to work with. She suggested GI mapping which also tests for H Pylori (Helicobacter) and this in itself was fascinating and so informative as to what was going on in my body. From this I worked with Carmen to make a plan with my diet and supplements to treat the underlying issues. I have still got a long way to go as we haven't been working on this long but I can already feel a difference with my stomach and digestion after so many years of problems. For anyone feeling stuck with what else to try or do after everything else doesnt work I honestly cannot recommend this clinic enough.
Thankyou Carmen for all your help and support

March 10, 2026
Unprompted review
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Reply from Nutrition Diets Clinic

Dear Ruth,

Thank you very much for taking the time to share your experience and for your kind words.

Digestive health concerns can often take time to improve, particularly when symptoms have been present for many years, so it is always encouraging to hear when clients begin to notice positive changes. Functional testing such as comprehensive stool analysis helps provide valuable insight into what may be happening in the gut and can guide a more personalised nutrition and lifestyle plan.

I am very pleased to hear that you are already noticing improvements in your digestion, and I look forward to continuing to support you as you make further progress with your health.

Best wishes,
Nutrition Diets Clinic

Rated 2 out of 5 stars

Please be cautious

I saw Carmen for several months, over the course of this time I sent multiple emails expressing concerns that my symptoms were getting worse . My concerns were brushed aside or dismissed as a normal part of the healing process. I have now been diagnosed with a chronic health condition which was left untreated for months due to false reassurance everything was fine.
I spent an AWFUL lot of money and felt my health concerns were not taken seriously or understood. Please be cautious about spending so much of your money on diet and supplements which in my case made things worse and delayed proper treatment.
Feels very money motivated rather than genuine patient care and understanding.

November 9, 2025
Unprompted review
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Reply from Nutrition Diets Clinic

Dear Danni,

Thank you for sharing your feedback. We are sorry to hear that you feel disappointed with your experience.

We take our clients’ feedback and health concerns very seriously and always aim to provide the most personalised nutritional guidance, adjusting protocols and recommendations where possible to suit individual needs and financial circumstances.


Nutritional therapy provides supportive guidance through functional testing, nutrition and lifestyle strategies based on the information available at the time.

It does not diagnose or treat medical conditions and is intended to work alongside appropriate medical care where needed.

While we cannot comment on individual cases in a public forum due to client confidentiality, we genuinely wish you the very best with your health going forward.

Nutrition Diets Clinic

Rated 5 out of 5 stars

Vitiligo (skin)

Carmen is an amazing nutritionist and functional practitioner. Very intelligent, knowledgeable and full of information. Carmen has helped my child in reversing vitiligo on his knee and lip. Total repigmentation on all vitiligo patches. She is very approachable and always available for reassurances and chat about how he is doing. Food, nutrition and detoxification was what Carmen focused on with my son, following results from various functional tests carried out . She’s not all about supplements but when needed , she will guide. Thank you so much Carmen. I am very grateful . I owe you one!!

October 27, 2025
Unprompted review
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Reply from Nutrition Diets Clinic

Thanks so much for your kind words and for sharing your son’s success story.

It has been wonderful to see the progress he has made, and a real pleasure supporting you and your family on this journey!

Nutrition Diets Clinic

Rated 5 out of 5 stars

Brilliant Choice for to improve gut health

After suffering for a number of years, I wanted to have my gut issues properly looked at and that's exactly what happened with the best help given for a full recovery. Nutrition Diets Clinic is a brilliant choice.

October 27, 2025
Unprompted review
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Reply from Nutrition Diets Clinic

Dear Emily,

We are so pleased to have identified the cause of your gut health issues with functional testing, and helped rebuild your microbiome and gut barrier with a personalised gut-healing protocol.

Wishing you much health and success. We are always here if you need us.

Nutrition Diets Clinic

Rated 5 out of 5 stars

Excellent experience with Nutrition Diets

Before consulting Carmen, I researched the background of several nutritional and functional health consultants. Carmen stood out for her comprehensive preparation and for her experience. I am happy to say that my research efforts really payed off. Carmen is an excellent consultant with qualities which are hard to find. The treatments and changes in life style that she suggested have been very effective. In my experience, she dedicates time to understand your state of health, your objectives, and any other constraint you might have, to come with a plan tailored to your needs. Also, the follow up that she gave was outstanding, and she has a notorious human warmth. All in all, based on my experience, I would absolutely recommend Carmen!

August 21, 2025
Unprompted review
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Reply from Nutrition Diets Clinic

Thank you for trusting us with your health and for taking the time to share such a thoughtful review. We truly appreciate it!

We’re very pleased to hear that our personalised approach has made a meaningful difference and that you feel supported by our care. We look forward to continuing to support you on your health journey.

Kind regards,

Nutrition Diets Clinic

Rated 5 out of 5 stars

Gut IBD Problems Massivley Helped

After working for decades with various Nutitionists and previously alternative practitioners, it is a massive relief to have FINALLY got some positive outcome from my ongoing IBD symptoms, while working with Carmen.

When my problem started, in the late 80's from taking Tetracycline (which massively disrupted by gut bacteria), it kicked off a period of decades long gut irritation / inflammation.

From Anti Candida treatment, to various Dysbiosis treatments and DNA analysis (eg a genetic problem breaking down alcohol as well as Gluten), I've been able to achieve a reasonable level of control, but Carmen was able to patiently review ideas with me and we now have a very stable level of health, helped FINALLY by finding gut supplements like digestive enzymes to help me absorb nutirents properly as well as heal the gut.

Thank you so much Carmen

July 4, 2025
Unprompted review
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Reply from Nutrition Diets Clinic

Dear John, thank you for sharing your experience!

We’re delighted to hear that working with Carmen and a personalised plan has finally helped you achieve stability with your gut health.

Your dedication and perseverance have also been a fundamental part of your healing process so a huge congratulations to you. It really means a lot to us to see such positive results in our clients and hear this kind of feedback.

Nutrition Diets Clinic

Rated 5 out of 5 stars

I found Nutrition Diets Clinic online…

I found Nutrition Diets Clinic online while looking for support with hormonal changes and hair loss, and I’ve been really pleased with the results. The personalised nutrition plan has made a real difference — my mood, energy levels, and sleep have all improved, and my hair feels stronger, which I now understand can be linked to hormone balance. It’s been a gradual but steady change, and I’m really grateful for Carmen’s expert guidance throughout the process. I wouldn’t hesitate to recommend the clinic to anyone looking for tailored support.

April 3, 2025
Unprompted review
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Reply from Nutrition Diets Clinic

Thanks so much for your feedback, Ana. It has been a pleasure getting to know you and working with you to address your symptoms and support your underlying hormonal health. Wishing you a great weekend and health and happiness moving forward!

Nutrition Diets Clinic

Rated 5 out of 5 stars

Improved gut microbiome balance

I have been working with Carmen for 5 months. I came to her because I knew I had gut issues. After doing a stool test she explained to me the imbalance in my gut and has been prescribing herbal supplements to support my body is correcting the imbalances in my microbiome. I have felt changes as follows: increased capacity to focus and renewed motivation for work and improved energy throughout the day.

February 21, 2025
Unprompted review
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Reply from Nutrition Diets Clinic

Dear Derryn,

Thank you for your sharing your positive feedback of your therapy experience.

The healing process takes some time and dedication but it really works when you stick to it and give your body the nutrients it needs. Thanks for trusting us and we look forward to continuing to support you and your microbiome!

Nutrition Diets Clinic

Rated 5 out of 5 stars

Working with Carmen has been an…



Working with Carmen has been an absolute pleasure. It’s refreshing to see a practitioner to be genuinely caring with a goal to make you better and healthy. Her guidance on lifestyle and diet changes have massively improved my quality of life and I am seeing improvements in my severe eczema that I have had for 20 years. The functional testing is a key foundation of the Carmens practice which means there is no guess work - we work off facts. For example, we identified multiple nutrient deficiencies which were slowing down my healing process. Seeing Carmen has made me realise that the diet is crucial to your health and even plays an important role in the condition of your skin. For anyone considering, I would highly recommend seeing Carmen as she has helped me reach the next step in changing my life for the better.

September 27, 2024
Unprompted review
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Reply from Nutrition Diets Clinic

Dear Waseem, thank you for your feedback. The pleasure has been all ours and we are so proud of the progress you have made since we began working together.

Nutrition Diets Clinic

Rated 5 out of 5 stars

Incredible experience and support from Carmen after being diagnosed with Lupus

I've had an incredible experience working with Carmen. Her holistic approach has truly transformed my health and well-being. Carmen helped me identify the right nutritional plan, supplements, and stress management techniques to support my body and mind after being diagnosed with Lupus (SLE). Her deep knowledge and personalized recommendations made a huge difference in how I feel day-to-day. I noticed improvements in my energy levels, digestion, and overall mood within weeks! I highly recommend Carmen to anyone seeking a compassionate and knowledgeable practitioner who looks at the whole picture of your health.

September 12, 2024
Unprompted review
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Reply from Nutrition Diets Clinic

Thank you so much for your kind words! I’m truly grateful for the opportunity to support you on your healing journey. It’s wonderful to hear about the positive changes you’ve experienced in your energy, digestion, and overall well-being.
Your dedication to your health has been inspiring, and I’m honoured to have been a part of it, Ershela.
Wishing you continued strength and health!

Warm regards,
Carmen x

Rated 5 out of 5 stars

My experience with Carmen is excellent

My experience with Carmen is excellent, she is very professional and knowledgeable. I visited Carmen for IBS related issues, her support and advice has greatly improved my IBS & overall health. She is very caring & I would highly recommend her for anyone - certainly with any gut health issues.

August 15, 2024
Unprompted review
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Reply from Nutrition Diets Clinic

Dear Stephen, thanks for your positive feedback. It's been a pleasure to guide you and help you heal your gut. It is one thing to want to heal and improve your health, but it takes action and dedication to put that into practice, so a big congratulations to you for remaining positive and disciplined. It's a step by step process but now you are seeing the positive results of the effort you have put in.

We are here for you whenever you need.

Rated 5 out of 5 stars

With Carmen's help, I have improved alot

Carmen has been amazing. The advice she provided has completely changed my way of eating and thinking. My diet was a complete mess and so was my gut and body, which all improved since the Initial Consultation.

With Carmen's help, I have improved not only my dinner but also breakfast, snacks and lunches. I am seeing an improvement in my skin, I feel better generally and and I feel good in my own skin.

Carmen is so knowledgeable and has a way of gently encouraging me. She’s patient, easy to talk and gave me confidence to implement the changes.

I have so much more energy now, my gut is happy, my brain is sharp, my skin is bright, I feel balanced and vibrant. I feel so much better than I had hoped for. I highly recommend Carmen to anyone who wishes to transform their health.

Thank you so much.

January 24, 2024
Unprompted review
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Reply from Nutrition Diets Clinic

Dear Larissa,

Thank you for sharing your positive experience! Testimonials like yours reaffirm to me why I do what I do.

Helping individuals like yourself transform their nutritional habits and improve their overall well-being is incredibly fulfilling. It's fantastic to hear that our collaboration has had such a positive impact on your nutritional habits and overall well-being!

Your commitment to making healthier choices is admirable considering all what you are going through. Remember, progress is a journey, not a destination, so every step forward is a win. Stay motivated!

I'm excited to continue supporting you on this path and helping you achieve your goals.

Let's keep up the good work together!
Carmen x

Rated 5 out of 5 stars

Really pleased to have found Nutrition…

Really pleased to have found Nutrition Diets clinic. After explaining my symptoms to Carmen on a call, she recommended a gut microbiome test so we could investigate the causes. She put me on a special food and supplements program to balance my markers which came back as low plus various deficences. Will continue the plan and take another test in 6 months time so we can check progress and compare to my original test but already am feeling much better in comparison to when I first started with most of my symptoms completely gone. Brilliant stuff.

November 1, 2023
Unprompted review
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Reply from Nutrition Diets Clinic

Dear Mackenzie, we are very pleased you found us and that you've made such great progress with Carmen's personalised plan for your gut health. We look forward to arranging your next functional test and seeing you in your follow-up appointment next year.

All the best and thanks for your positive feedback.

Nutrition Diets Clinic

Rated 5 out of 5 stars

Highly Recommend!

Working with Carmen was such a fantastic experience. It was the first time in a long time that I felt genuinely heard about my health concerns. We had a comprehensive initial appointment where she listened and walked me through my options. After some consideration, I went forward with testing. I am grateful that I did because, with her guidance, we have a plan in place that has already been showing results. I highly recommend her!

September 4, 2023
Unprompted review
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Reply from Nutrition Diets Clinic

Dear Sam, thanks for your positive feedback. We are so glad that our action plan is already showing improvements in your health.

Thank you for trusting us with your health!

Rated 5 out of 5 stars

I highly recommend Carmen

I highly recommend Carmen. Despite living in the US, Carmen has been able to guide and assist me with my IBS, which I have been suffering from for a long time. Carmen has been the first nutritionist to help me find a solution to my problem. Her professionalism, empathy, and sweetness have been evident throughout my treatment. I am grateful to have found her, and I cannot thank her enough for the help she has provided.

May 15, 2023
Unprompted review
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Reply from Nutrition Diets Clinic

Maria, it has been an absolute pleasure working with you and we are so glad to have been of service and support to you in your gut healing process.

Thank you for your feedback!

Rated 5 out of 5 stars

I ordered a gut health microbiome test…

I ordered a gut health microbiome test through Nutrition Diets. They analysed my test and have helped treat my digestive symptoms with personalised nutrition and lifestyle medicine. I'm really happy with the results and feeling great again. Would definitely recommend for anyone looking to improve their gut health!

September 11, 2023
Unprompted review
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Reply from Nutrition Diets Clinic

Thank you Alesia for your feedback.

It has been a pleasure supporting you and we're really glad your symptoms have improved so quickly!

Nutrition Diets Clinic

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