Book your IBS dietitian appointment

best private dietitians in London

MULTI-AWARD WINNING DIETITIAN & NUTRITIONIST CONSULTANCY COMPANY. 

We provide the greatest care and highest level of service, by the most experienced gut health dietitians.

meet Our Gut Health/ IBS Dietitian & Nutritionist team

Registered Dietitian, BSc.

Gut Health & IBS Specialist

Registered Dietitian, BSc

Weight Management & IBS/ Gut Health Specialist

Registered Dietitian, BSc, MSc

Weight Management, PCOS, IBS & Gut Health Specialist

How can our IBS dietitians help you?

Our gut health nutritionist can help you identify foods that may be triggering your symptoms

The low FODMAP diet may sound overwhelming due to being restrictive, however our IBS expert will make the process so much simpler and easy to follow. She will tell you exactly what you can and cannot eat, and create a tailored meal plan for you during that time. Note that the low FODMAP diet should not be followed for too long.

Our FODMAP nutritionist will design a meal plan that takes into account your food preferences, and health goals.

Our IBS nutritionist will tell you exactly what you can do to improve your gut microbiome and tolerance to certain food. This will include discussing probiotics, enzymes and supplements.

After your initial consultation, you will receive tailored recommendations to help relieve your symptoms efficiently.

Testimonials

ExcellentDietitian Fit - Nutritionist & Dietitians5.0 Based on 148 reviews fromSee all reviews review us onLenus B.Lenus B. ★★★★★ Hello healthier people!I just want to say how amazed and greatful to my dietitian Marizaan I am!She been kind, thoughtful, understanding and very patient with my journey from a food addiction person with huge health problems and feeling constantly that I will die to a new me today who lost 8 kg in 3 months and 6 cm from waistline giving me the confidence of 20 year old who will live well over 100!I am a health professional and I proud myself with lots of knowledge including some in nutrition but I realised during these 3 months how many mistakes I was making and learned a lot! Today was my last session but as I am still finding my feet around nutrition and diet I decided to extend it for another 3 months! Hope at the end to be the new fully healthy and disciplined one! Bonus, stopped so many medications! Good luck! I sure feel top of the world! LenusLouise E.Louise E. ★★★★★ Matt R.Matt R. ★★★★★ Isabella provided me with a friendly professional service, she took the time to assess my personal and professional circumstances and created the best plan to suit me, always on hand to answer any follow questions and adjust any details to my plan. Making it a great service but also an enjoyable straightforward process, highly recommend.Jose G.Jose G. ★★★★★ Isabella Alfonso is the dietitian I got assigned to and she has been amazing!Ever since I started the dietary plan she created for me, my relationship with food has improved and I managed to lose 12 kilos in 2 months.I’m really happy with the service I have received (and that I am still receiving) from Dietitian Fit and IsabellaCarmen W.Carmen W. ★★★★★ Working with Kat has been transformative. When I first came to her, I was stuck in a binge-restrict cycle that left me feeling defeated. Although I had a basic understanding of nutrition, I couldn’t break the cycle on my own. Kat brought kindness, warmth, and positivity to every session, developing a plan tailored to my needs and supporting me at every step.Thanks to her approach, I’ve built a much healthier relationship with food and learned countless strategies toward genuine food freedom. Kat made me feel understood and encouraged, lifting my spirits even on days when it felt impossible to be positive. Now, I feel in control of my eating habits in a way I never thought possible. I can’t recommend her highly enough—thank you for everything, Kat!Rosa P.Rosa P. ★★★★★ Marlene has been essential in my journey to understand what I’m eating, losing weight and having a very clear plan for the future. As well as be very patient with my quirks and own ideas on how to achieve my goals. She understood from the beginning how to work with me and I’m very gratefuljason A.jason A. ★★★★★ Alicia Du Preez has been an excellent dietician. It feels like there is a program tailored to suit our needs. We are very hopeful for the future.Paula Mora J.Paula Mora J. ★★★★★ Maia was amazing and I have learned so much from her, including how nutrition is related to gut health, the female cycle, hormones, sleep and stress. I feel so much better mentally and physically after 3 months. My view of food and my body has completely changed and I am really grateful to Maia for being so supportive and providing me with so many useful resources and recipes. I highly recommend working with her!Olivia S.Olivia S. ★★★★★ Great place, I liked everything. Thank you.Katie D.Katie D. ★★★★★ Working with Isabella has been brilliant! She is a wealth of knowledge, and I’ve learned so much about nutrition during our sessions. From preparing for a half marathon to crafting a balanced, nutritious (and delicious) diet, she has guided me every step of the way. What I appreciate most is the openness of each session, I could ask her anything, and she always followed up with meticulous notes. I now feel fully equipped to take control of my health and performance, all thanks to her. Beyond her expertise, she’s a genuinely wonderful person and a joy to talk to. Thank you, Isabella!Marella C.Marella C. ★★★★★ Only good things to say !I have worked with Katarina, who's provided me with an easy-to-follow meal plan and various useful tips that really made the difference. Since I started my journey with her I not only feel much better physically, but I have managed to get control of my health and nutrition in the daily routine. She has always been super supportive and available, which allowed me to open up and share a lot with her.Most importantly, Katatina has greatly helped me overcoming my fears of 'trigger' foods, teaching me that no food should be eliminated as long as you are aware of what you are eating to properly nourish your body. Eating out with friends and enjoying weekends drinks has become much easier now!I highly recommend her for your weight loss/health journey 🙂Jennifer R.Jennifer R. ★★★★★ Working with Isabella has been a pleasure. She’s warm, creative and caring and has come up with some fabulous suggestions for meal prepping and organising my time to make sure work days are still good nutrition days. She can take the credit for my return to swimming, pilates and the gym too. With her encouragement and expertise I feel I’m on the path to better health.Ben H.Ben H. ★★★★★ Isabella Alfonso gave wonderful advice and made a great program that was easy to follow.SarahSarah ★★★★★ It has been a lovely experience working with Alicia and so happy to have her with us on our journey. She is very caring and went the extra mile for our toddler which we are so grateful to her for.MartaMarta ★★★★★ I cannot express how grateful I am to have worked with Kat. She is incredibly kind, sweet, and always brings a positive, sunny energy to every session. I came to her in a bad cycle of emotional eating, having gained weight and feeling completely out of control. Although I had a general understanding of nutrition, I simply couldn’t break the cycle on my own. Kat created an effective plan tailored to my needs, and more importantly, she supported me every step of the way, helping me let go of guilt and manage difficult moments.Her approach gave me a new, healthier relationship with food, and I found myself actually looking forward to our sessions, even when I felt shy or guilty about what I had logged in the app. Kat made me feel appreciated and always uplifted my spirits, no matter what. Thanks to her, I’ve reached my goal of losing nearly 5 kg, but even more importantly, I now feel in control of my eating habits. I can’t recommend her enough—Kat is truly the best. Thank you so much, Kat!Ellen M.Ellen M. ★★★★★ I did a programme with Katerina and was so grateful for all her advice and tips! She gave me achievable goals and I use the plan she made me daily. Thank you!Jade B.Jade B. ★★★★★ Alicia was amazing! She was so helpful and understanding. She really helped me understand what our little one needed to deal with his potential allergies and how to approach weening. We have a clear plan moving forward and I will definitely be reaching out again when we are ready to take the next steps!Fabrizio S.Fabrizio S. ★★★★★ I highly recommend Kat as a dietitian. Under her guidance, I successfully lost weight in a few weeks, even while being on holidays. Kat provided tailored, evidence-based advice that was practical and easy to incorporate into my daily routine. Her expertise, combined with her supportive and encouraging approach, made a significant difference in my journey. Kat also taught me to find joy in preparing healthy and balanced meals, transforming my approach to food into something positive and enjoyable. She was always available to answer my questions and offer guidance, ensuring that I stayed motivated and on track. I am truly grateful for her invaluable support and professional insight, which made this process both manageable and rewarding.Elizabeth H.Elizabeth H. ★★★★★ Susan has helped me reset my attitude to food and weight loss. By going back to the basic principles of healthy nutrition and allowing myself to enjoy food, I have been steered away from obsessing about calories and weight loss. I’ve stopped bingeing and shifted my feast or famine mentality to eating what I like without feeling guilty. It’s no longer about fast weight loss for me (followed by faster weight increase) - just healthy habits that I can sustain for life. Susan is so knowledgeable, supportive and passionate about nutrition - she makes it easy for you to change your eating habits!Terence C.Terence C. ★★★★★ An incredible person, really listens to you and provides you with so much information. Consistently checking in, willing to adapt to small things that I required, and such a positive mindset when it comes to dieting and nutrition. Would highly recommend to anyone who is looking to start out their diet journey. ⭐️Lisa T.Lisa T. ★★★★★ Marlene was realistic and set realistic goals. Her clear explanations helped me to manage cravings and understand what I needed to change.jasmine P.jasmine P. ★★★★★ As everyone in the boxing circle is aware, a boxers weight class is a common topic.A couple of years ago I made the decision to move up to the 63kg weight division.I felt fatigued and was injury prone in the 60kg division and almost swore to myself I'd never go back to that weight.However, a few months ago I decided to give it another try.Personally, i wanted to approach it differently this time with a gradual weight decrease starting a few months out to avoid the way I ended up feeling the last time I fought at 60kg.With the Help of Dietician fit and specifically Isabella Alfonso the journey back to 60kg was safe and much less stressful!I have felt fuelled during my intense training weeks and competing. And most importantly to me have felt much happier.Isabella has reassured me during this journey, especially when the human body surprises you (which as a female, it does)!And has been very adaptable to suit my needs. She asks regularly how I feel during training sessions and generally, to ensure I am as comfortable as possible.I won't vow to stay at 60kg forever, but I know whatever weight category I/my body choses, I will be well fuelled and healthy!Claudia B.Claudia B. ★★★★★ I enjoyed my journey with Kat so much! Her advice about intuitive eating was extremely helpful and I have learnt a lot about what my body needs. She is so knowledgable and she has given me a lot of tips that I've managed to implement in my daily life. So happy to have found her and would recommend her highly!Gili B.Gili B. ★★★★★ Kat played an important role in helping me establish a healthier lifestyle during a challenging time when I was moving countries and had no routine. Despite the obstacles, Kat guided me on what to eat, even when I wasn’t cooking at home. Her practical advice and unwavering support made a real difference, and I’m truly grateful for her expertise.Holly G.Holly G. ★★★★★ Katerina helped me so much with my weight gaining journey. I started with very little knowledge of dietary needs and cooking skills, yet Kat made every effort to understand how and where she needed to help me. Her emotional support and attentiveness was incredible, and I will always appreciate the safe space she created for me.Camila R.Camila R. ★★★★★ I consulted Isabella about how to modify my diet to perform in sports. She was very thorough, asked many questions regarding lifestyle and training (times and frequency, intensity, type of training, etc). She designed a meal plan without drastically changing what I usually eat, which made it easy to follow and sustainable. I'm really happy with her assessment and would recommend her to anyone looking to support a better performance in sports with diet. I have noticed I'm no longer lightheaded when lifting heavy weights or after lengthy sessions of rowing in the river. Isabella is also the loveliest person 🙂Amina N.Amina N. ★★☆☆☆ ben S.ben S. ★★★★★ Alicia was so friendly and helpful with our son’s dietary issues, producing a detailed report for us which gave lots of useful insight. Would definitely recommend!Anastasia K.Anastasia K. ★★★★★ I had a brief initial consultation with Karine who introduced me to Maia Lockhart. I then had a meeting with her which I was initially nervous about but it soon turned into a lovely experience. Maia made the effort to record all of my symptoms (PCOS) regarding my cycles, ask me about my lifestyle (work, exercise, stress, sleep), the supplements I take, and my diet overall. She provided me with a lot of information on why her suggestions could be helpful which helped reassure me that I am on the right path. I have been given a flexible meal plan, focussing on variety rather than restriction. There was no requirement to track calories which can be stressful and time consuming. I have also been given a guide towards managing my stress, and advice on how to manage my busy lifestyle. I am extremely satisfied with the amount of support I have received from a single online consultation, and I thoroughly recommend Maia as she was very friendly, compassionate and professional at the same time.Mary Isabel Vieira de R.Mary Isabel Vieira de R. ★★★★★ I want to express my sincere gratitude to Dr. Marlene Ferreira for her exceptional care and professionalism. Her knowledge and dedication have been fundamental in our health improvement process. Thanks to her advice and nutritional plans, she has helped us manage the situation. I highly recommend Dr. Marlene to anyone seeking an expert and committed nutritionist. Thank you so much for everything, doctor!Julia S.Julia S. ★★★★★ I worked with Reema for 6 months and she was a breath of fresh air compared the judgmental nutritionist I'd seen prior. She changed my entire way of eating and my approach toward food. Her kind, empathetic, and helpful way of working was so appreciated.When I first saw Reema, I was working through reclaiming my body after an IVF miscarriage. By changing my eating habits, I was able to conceive naturally and I'm now in the second trimester of my pregnancy. She honestly changed my family's life for the better and I could not be more grateful.Anastasia L.Anastasia L. ★★★★★ I, once again, decided to lose weight not only because I wanted to become fitter but also to avoid becoming a diabetic. My blood tests showed that I was in a pre diabetic stage and losing weight would be very important.I decided this time to ask for professional help from a dietitian rather than embarking on one of the commonly used diets and this is how I met Katerina Ageridou in Dietitian Fit.Katerina understood from our first consultation that I needed to change a few habits that would act as a deterrent in loosing the weight and gave me several tips on how to achieve this change! She also gave me dietary advice to achieve both losing the weight and to avoid diabetes. She demonstrated that she can pair her extensive knowledge on nutrition with the individual needs of her clients helping them to achieve their goal!I found Katerina’s help during our consultations invaluable because her advice for a start motivated me to start the journey of losing weight but it will also help in the long run to reach my target weight and to maintain it. Hopefully this effort will also result in avoiding diabetes.Katerina I can’t thank you enough !Rebecca S.Rebecca S. ★★★★★ I have struggled with my weight for many years, and finding Isabella has truly been life-changing. Her knowledge, support, and personalized approach have made all the difference. In just the first few months, I have lost almost 12 kg, and I know this is just the beginning of my journey. Each session with Isabella is an opportunity to learn and grow, and I am constantly amazed by how much I have gained from her expertise. I couldn't recommend her more highly and only wish I had met her sooner. Thank you, Isabella, for helping me on my journey to better health!Andrew M.Andrew M. ★★★★★ IoannisIoannis ★★★★★ Working with Isabella had been fantastic. Even though I was aware of the basics, her knowledge and advice helped me gain a better understanding of what I need to do on a daily basis. She took the time to understand my goals and gave me a personalised plan that I could apply to my training. Isabella was always available to answer my questions and provide support along the way.Highly recommended!Danielle G.Danielle G. ★★★★★ What a lovely lady with so much knowledge ! I’m so excited to be working with her. She made me feel so at ease in the phone and that I can help my child’s sting habits… music to mother’s ears! XJona00Jona00 ★★★★★ Our experience with my daughter's dietician was exceptional. The dietician was knowledgeable, professional, and caring. She took the time to listen to our concerns and tailored a dietary plan that was suitable for my daughter.I highly recommend this dietician to anyone looking to make positive changes to their diet and lifestyle.Marta P.Marta P. ★★★★★ I can highly recommend Kat. She is very knowledgeable, paces very well the information she passes on without overwhelming you. She is clear and efficient yet also motivating, non-judgemental and truly cares about adapting the plans individually. Thanks, Kat!michael U.michael U. ★★★★★ I had the pleasure of working with Anastasia Gkegka, and I can confidently say she exceeded all my expectations. From the outset, her expertise and knowledge were evident, but it was her personalized approach that truly set her apart. Despite my initial skepticism, Anastasia's guidance and support completely transformed my perspective. Her tailored strategies not only helped me achieve my goals but also empowered me with the knowledge and tools to maintain a healthy lifestyle long-term. I highly recommend Anastasia to anyone seeking professional dietary guidance.Beatrice R.Beatrice R. ★★★★★ Alicia was extremely helpful in advising me about the diet of my ten year old autistic son. Her manner was calm, friendly and informative and she was very knowledgeable. She made the experience enjoyable and collaborative and I really enjoyed our sessions.Katie SKatie S ★★★★★ I had a really great experience with Kat and saw consistent weight loss each week after having hit a plateau in my own efforts to lose weight. Kat was really supportive throughout, and explained how to make conscious food choices which didn't make it feel like I was dieting, even when eating out at restaurants etc. She was really great at explaining how I can eat well and nourish my body without having to give up any foods that I love and how to reframe and combat emotional eating which was a big problem for me in the past. I couldn't recommend her more!Zoe P.Zoe P. ★★★★★ Fantastic dietician so helpful and friendly. Alicia was great she really listened to me and to my neuro divergent child. She was never condescending which was a worry of mine. She always called and kept to appointments and spoke with other professionals quickly. She has managed to sort my chids fibromyalgia referral and spoke with camhs for us. She's amazing thank you .Emily M.Emily M. ★★★★★ Lorenza G.Lorenza G. ★★★★★ Kat was absolutely wonderful- professional, knowledgeable and kind she really helped me and guided me in my journey. I am very grateful to her.Clotilde S.Clotilde S. ★★★★★ I had a great experience with Kat, she was an amazing help throughout my weight loss journey.She is the sweetest! Very understanding, supportive, she gives great tips and explains key concepts very well.100% recommend, thank you Kat!!Cristiane D.Cristiane D. ★★★★★ Kat helped me to understand how a vegetarian diet can be balanced to provide necessary protein and vitamins. Kat also helped me to interpret my recent blood test results and advised me on what to eat and drink to balance levels of iron and other deficiencies on my results. I am very grateful to Kat for her services which provided me with the tools to change some of my eating habits and empowered me to make good decisions to live a healthier life.M JM J ★★★★★ Sessions with Marlene were very, very useful. She is wonderful; she advised some very good techniques and she equipped me with very good tools in order not just to lose weight and become healthier but to keep good eating habits for longer term. Marlene is very kind, pleasant, friendly, professional and has a good knowledge in her field. Highly reccommendable! Thank you Marlene!Siddhi S.Siddhi S. ★★★★★ Kat worked with me to regain my hunger cues and develop a better mindset around nutrition / fuelling my body. I worked with Kat for about 6 months and in that time she was able to meet me where I was and teach me ways to improve my mindset toward food. I am incredibly grateful for investing in a nutritionist as I worked through some lifestyle changes that I had to make for my overall health!Melissa A.Melissa A. ★★★★★ I worked with Kat for around 6 months and can truly say that the experience has transformed my attitude to food and dieting. I came into this looking to find a sustainable way to eat healthily and lose weight, that wasn't based on counting calories or restricting myself. I've more than achieved that with Kat. Kat was brilliant to work with, she is encouraging, empathetic, non-judgemental and insightful. I felt like I was working with someone who truly cared about my journey. Although, I didn't reach my goal weight, I now have the tools, guidance and mindset to get there and feel much more confident about managing a sustainable healthy lifestyle that works for me.Christine H.Christine H. ★★★★★ From stephen Harvey:My experience was very rewarding , diet plans tailored to my needs .Katerina was very knowledgable and informative about my personal issues.Explaining all the pros and cons of my eating habits, and dietary needs.By following the plans prepared for me and exercising i shed 23KG., it was hard going at first , but with on the ongoing support , i perseveredi’m very thankful for my results :My motto is“Never give up” you can’t put a price on your health .js_loader

What is IBS?

Irritable bowel syndrome (IBS), also known as irritable colon, is a very common gastrointestinal disorder that affects 1 in 7 people. It affects the digestive system, where the symptoms occur mainly in the large intestine. Food intolerances are often associated with IBS.

Causes of IBS

The exact cause of IBS is not known. There are, however, numerous factors that seem likely to play a role in its development. These include:

Common symptoms of IBS:

Stomach pain or cramps

Stomach pain or cramps are usually worse after eating and can get worse as the day goes by.

Bowel Changes

This can be constipation, diarrhea or alternating between constipation and diarrhea, meaning erratic and unpredictable and bowel habits

Bloating

Abdominal bloating - the sensation of an inflated balloon in the abdomen, your tummy feel uncomfortably full and swollen

Excessive wind/gas/ fart

Excessive flatulence where passage of flatus/gas/wind is greater then usual.

Fatigue

IBS may cause fatigue

IBS dietitian

What is the best diet for IBS management/ relief?

There are many different dietary strategies that can help relieve IBS symptoms. Research at Monash University, King’s College, London and numerous other centres around the world has shown that a low FODMAP diet improves IBS symptoms in at least 75% of IBS sufferers. Therefore, a low FODMAP diet is the first treatment choice for people suffering from IBS.

FODMAP DIET

The FODMAP diet is considered one of the best and most effective IBS treatments.

What does FODMAP mean?
  • Fermentable gut bacteria ferment undigested carbohydrate to produce gases
  • Oligosaccharides – Fructans & GOS – found in foods such as wheat, rye, onions, garlic and legumes/pulses.
  • Disaccharides – Lactose – found in dairy products like milk, soft cheeses and yogurts.
  • Monosaccharides – Fructose – found in honey, apples, high fructose corn syrups, etc.
  • And
  • Polyols – Sorbitol and Mannitol – Found in some fruit and vegetables and used as artificial sweeteners.
Put simply, FODMAPs are a collection of short-chain carbohydrates (sugars) that aren’t absorbed properly in the gut, which can trigger symptoms in people with IBS. FODMAPs are found naturally in many foods and food additives.
Understand how FODMAPs can trigger gut symptoms in people with IBS

3-step process to manage your IBS symptoms and feel at your absolute best With an ibs nutritionist!

Trust the FODMAP nutritionists at Dietitian Fit to help you obtain relief from symptoms of your Irritable Bowel Syndrome. All treatments are grounded firmly in nutritional and dietary science and do not require the use of potentially problematic pharmaceuticals.

Step 1: Low FODMAP Diet

Week 1-2: Remove all high FODMAP food to get rid of 80-90% of the symptoms.

Step 2: FODMAP Reintroduction

Week 3-8: FODMAP rich foods are reintroduced foods back into your diet one by one (total of 6 food groups) to identify which FODMAP types trigger your IBS symptoms, and which do not.

Step 3: FODMAP Personalization

After identifying your high FODMAP trigger foods, foods that are well-tolerated are reintroduced back into your diet.

In most cases, you will be able to reintroduce many high FODMAP foods back into your diet, but you may not be able to eat them in the same quantity as before.

Your IBS dietitian may also recommend you specific probiotics to increase your gut health and improve tolerance to some foods.

IBS/FODMAP

IBS/ FODMAP diet 

£99

/month for 3 months (10% discount)
  • Initial Consultation
  • Meal Plan or 7 Days Personalised Menu
  • 2 x 1 Hour Follow-up
  • Kings College Booklets on Low FODMAP Diet
  • Recipe Booklet
  • Unlimited Support by Email

Individual Session

Prices displayed below
  • Initial Consultation (60 mins) - Includes Personalised Meal Plan - £119
  • 1 Hour follow-up session - £90
  • 30 Minute Follow-up Session - £50

FAQs

If your IBS symptoms are interfering with your day to day routine, or you have more severe symptoms such as anaemia, weight loss, nighttime diarrhoea or persistent discomfort in your gut, it is time to seek help from our IBS dietitian.The IBS nutritionists at Dietitian Fit are experts at diagnosing the problem and formulating effective dietary relief plans.

It should take between 6 and 10 weeks to complete the low FODMAP diet. With the right guidance and support from our ibs dietitian, it shouldn't take longer than 10 weeks to reintroduce most foods safely in your diet.

No, it is contraindicated to stay on the low FODMAP diet for too long as this diet can increase your risk of deficiency and negatively impact your gut microbiome.

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