Complex severe obesity
Obesity complicated by other conditions, previous surgery or medicines that affect metabolic health.
Specialist in Complex Obesity, Diabetes & Endocrinology
Dr Chinnadorai Rajeswaran
Known as Dr Raj
Complex weight management and metabolic medicine
Over thirty years in obesity medicine, diabetes and endocrinology, treating the people other weight-loss services can't help: complex obesity, the metabolic and hormonal causes behind it, and patients who haven't responded to treatment elsewhere.
FRCP (London)
Fellow, Royal College of Physicians
About
A physician for the cases that need more than a programme
Dr Rajeswaran is a consultant physician in obesity, diabetes and endocrinology. He trained in Leeds, holds Certificates of Completion of Training in both General Internal Medicine and Diabetes & Endocrinology, and is a Fellow of the Royal College of Physicians, London.
He worked for several NHS trusts for more than 25 years, where he was clinical lead for obesity and led a large multidisciplinary specialist weight management service. He has been instrumental in setting up specialist weight management services in the UK and overseas, including the Tier 3 service at York Hospitals NHS Trust, and in 2008 he founded the National Diabesity Forum.
GPs and fellow consultants refer him the patients whose picture is not straightforward: obesity alongside diabetes, thyroid, adrenal or reproductive hormone problems, weight regain after surgery, or symptoms that have been explained away elsewhere. His approach is unhurried and thorough — a detailed history, the right tests, and a plan he explains clearly, to the patient and to their GP.
Dr Raj leads The London Obesity Clinic, a Simplyweight clinic, with consultations at Ten Harley Street, Claremont Hospital in Sheffield, Nuffield Hospital in Leeds and by video, and he is Medical Lead of the clinic in Chennai. He is also a published author on bariatric care.
Simplyweight is a family business, built with his wife Kala and his daughter Kiruthika. Together they support their local food bank, helping families in the community who are going without.
“Weight gain is rarely a single issue, but the result of interconnected metabolic, inflammatory and emotional factors.”
Associations & memberships
Part of the societies that shape his field
- Research Society for the Study of Diabetes in India
- Registered with the General Medical Council
- National Diabesity Forum — Founder & Chair
Profiles & patient reviews
Serving patients from over
30+
countries
People travel from far and wide to see Dr Rajeswaran, in person and through secure video consultations.
Specialties
Where Dr Rajeswaran's expertise lies
Obesity is rarely the whole story. These are the conditions he assesses and treats most often — frequently several at once.
Type 2 diabetes & prediabetes
Joined-up care that considers glucose, weight, cardiovascular risk and current medicines together.
Thyroid disorders
Specialist thyroid assessment and treatment, including weight that won't shift on thyroid replacement.
PMOS (formerly PCOS)
Cycles, fertility, skin, weight and metabolic health — care shaped around your priorities.
Menopause & weight
The metabolic and hormonal shifts of menopause, with evidence-based guidance.
Infertility
Endocrine-focused assessment of the hormonal factors affecting conception.
Fatty liver (MASLD)
Metabolic treatment alongside appropriate liver-risk assessment.
Erectile dysfunction
Discreet assessment of vascular health, diabetes, hormones and wellbeing.
Post-bariatric weight regain
Specialist metabolic assessment and tailored treatment after weight-loss surgery.
Speaker
Lecturing across the UK, Europe and Asia
Dr Rajeswaran speaks nationally and internationally — at conferences and to GPs, nurses and specialist registrars — on diabetes, weight management and diabesity.
- Parliament
- Has spoken at Parliament, contributing to an All-Party Parliamentary Group on childhood obesity policy.
- Coimbatore, India
- Helped establish a specialist obesity service as a corporate social responsibility initiative, lecturing consultants, junior doctors and nurses in the presence of the Dean of Coimbatore Medical College, Dr B Asokan.
To arrange a speaking engagement, please contact our clinic.
Research & Authorship
Research & Authorship
Below are a selection of books, articles, journals and other publications that Dr. Rajeswaran has contributed to.
simplybariatrics: The Ultimate Guide to Weight Loss Surgery
Author Roger Ackroyd, Chinnadorai Rajeswaran, Corinne Owers, Nerissa Walker.
This is the first weight loss surgery book, which finally brings together all aspects of weight loss surgery.
The Ultimate Guide to Weight Loss Surgery is the most comprehensive, weight loss (bariatric) surgery book currently available. Written by leading, UK experts in weight loss surgery and obesity, this easy to read, interactive book will provide advice and support from the beginning of your weight loss journey to many years afterwards.
Medical Problems in Obesity
2016
Author Endocrinology and Diabetes, Case Studies, Questions and Commentaries Edited by Ramzi Ajjan • Stephen M. Orme Editors .Springer publications
Dr.Raj and Mohan Ramasamy contributed to two chapters:
Medical Problems Post Bariatric Surgery: Chinnadorai Rajeswaran and TolulopeShonibare
Medical Problems in Obesity: TolulopeShonibare, Arelis Rodriguez-Farradas, Mohan Ramasamy, and Chinnadorai Rajeswaran.
Endocrine Abstracts
2015
Author Chinnadorai Rajeswaran, Sarah Oglesby, Syed Zulfiqar Raza Zaidi & Suresha Muniyappa
Adrenal insufficiency following bariatric surgery: Endocrine Abstracts (2015); 38: P213.
Practice Nursing
2007
Author T Chakraborty, C Rajeswaran
Caffeine Overdose with Rhabdomyolysis and Hypokalaemia. Acute Medicine; 6 (2): 71–72.
Practice Nursing
2013
Author Chinnadorai Rajeswaran, Rayaan Shaikh, Misbah Mohammad
Bariatric surgery: a long-term solution to managing diabesity. Practice Nursing, Vol. 24 (12) 608 – 615.
Diabetic Medicine, 33 (S1)
2016
Author Gillibrand, Warren P., Rajeswaran, C., Zaidi, S. Z., Muniyappa, S., Mohammad, M., Stephenson, John, Verma, S., Sloss, C., Covill, Carl and Holdich, Phil.
A prospective study of mental health outcomes in morbidly obese patients. Diabetic Medicine, 33 (S1). pp. 171-172.
Practical Diabetes International
2005
Author Rajeswaran C, Bodansky HJ, Orme SM
Resolution of long duration insulin dependent diabetes and hypertension following resection of an asymptomatic phaeochromocytoma. 22:307-312.
Diabesity in Practice; Vol 3, No 3
2016
Author Arelis Rodriguez-Farradas, Joanne Quinn, Kurt Maloney, ToluShonibare, Chinnadorai Rajeswaran
STEPS: A weight management group programme for adults with complex and severe obesity Diabesity in Practice; Vol 3, No 3, pages 113–117.
Practical Diabetes
2005
Author Rajeswaran C, Bodansky HJ, Orme SM.
Resolution of long duration insulin dependent diabetes and hypertension following resection of an asymptomaticphaeochromocytoma. Practical Diabetes International.
Surgery for Obesity and Related Diseases
2016
Author Arif Zafar, Chinnadorai Rajeswaran, Jainudeen Khalander Abdul Jameel; Surgery for Obesity and Related Diseases, Vol 10 Issue 1,e11-12
Laparoscopic sleeve gastrectomy in a bilateral lower limb amputee: Why is it worth doing?
The Sport and Exercise Scientist
2016
Author Matthew Haines, Chinnadorai Rajeswaran, Mohan Ramasamy and Debbie Hastings
Is bariatric surgery a serious solution to the diabesity epidemic? provide a perspective on the role of exercise science after surgical weight loss. The Sport and Exercise Scientist; Issue 48; Summer 2016: www.bases.org.uk
Patient Stories
Rated 5 stars on Doctify and iWantGreatCare
Patient Stories
In their own words — shared with us, and on Doctify and iWantGreatCare. Some names are shortened to protect privacy.
I found him very informative and he grasped my rather complex medical condition very quickly. His advice was clear and concise and I know exactly what to do next.
Dr.Rajeswaran is an extremely competent physician and diabetologist. I have been associated with him professionally for the last 17 years and I find his work extremely good. He has extensive experience also in the management of obesity related problems and I has found his management very rewarding for the patients as well.
Got a long wanted diagnosis (nhs were ignoring me) and my questions answered. Ibleft alot more positive about my situation than when i arrived.
Can I say how lucky I was to be referred to your clinic. I had tried to lose weight myself. My own GP sent me to their own surgery’s clinic. All they ever did was weigh me and showed me a picture of a plate divided into portion sizes ! Then I asked if I could be referred to the hospital to see about weight loss surgery. That’s when I met you.
I have recently started using the Claremont Hospital in Sheffield and have been totally impressed by the high level of care and time their consultants take with patients. Dr. Rajeswaran is no exception. Although I was focused on the treatment of one hormonal problem, Dr Rajeswaran carefully and methodically went into all my other medical conditions to ensure that any treatment he recommended would help, if possible, the whole person and not just this one condition. His attention to detail, the time he takes to understand his patients, the care in selecting the right tests and treatments his detailed clinic letters, has left me in know doubt that I am in safe hands and the assurance of much improved health.
I have always found Dr. Raj friendly and to conduct his clinic in a patent relaxing manner. He pays great attention to any changes in the patient’s health between clinics, and, to any test results he organised for the patient between clinics. The result is that I have always feel at the end of the clinic that my health is being expertly managed and achieving the best possible outcome. Dr. Raj produces detailed clinic letters to my GP and clearly defines my current health situation and any next steps to be undertaken. I could not be in better hands.
My interaction with dr raj has been a very elevating experience. Instead of just prescribing, he made me understand the changes in my body and how it impacts me so that i can make the right choices myself. More than just a treatment, i have found ways to improve my lifestyle which probably is the best guidance one can get. I have had a wholistic approach here and that has been the fun part. I have loved the way my health both physical and mental health has improved and definitely thanks to them.
Dr Raj has been fantastic,
He treats you as a person and takes a great deal of time to find the problem.
He leaves no stone unturned.
He has an extremely caring nature and very detailed into investigations.
A true gentleman and how Doctors should be…..
Dr Raj is the most understanding and helpful Dr I have had. He is totally committed to helping , caring and understanding his patients. His manner makes you feel at ease immediately and with his help I have lost a large amount of weight and he is so happy that I am happy. Thank you Dr so much for your help and care.
I have been very happy with the service I have received. It was very easy to make an appointment and was seen within a week.
The appointment itself (both in fact), was very thorough and Dr Raj was both understanding and clear in what he wanted to happen going forward. The plan was clear and this was very reassuring. During my second consultation, he checked everything again and told me clearly what had improved and what options there were going forward.
The correspondence I received was very useful for my GP to action, and going forward, the NHS consultant.
It was definitely worth the money for peace of mind and a clear, decisive plan. I would definitely recommend Dr Raj and wouldn’t hesitate to see him again if the need arose.
Many thanks.
I tried on 2 evening dresses yesterday. The first one I had on my 17th birthday and the second which I could not even start to zip up a couple of months ago was the dress I wore on my 21st birthday. I kept both dresses as they both expensive and I loved them both. The dress from when I was 17 is too big – it is from the 80’s made of taffeta – masses of material. Size 12. The other dress I originally had for a ball in London when I was 20 and then wore it for my 21st. This is fitted with a wide band under the bust. The dress now fits perfectly. I cannot remember being that small. I always felt and thought I looked big. I remember I did lose weight at this age when I started work. I went out with two friends on my 21st plus family. I am still very close with my friends and will see them both in the next 2 months. I am still buying a new dress for the cruise and party, but I could not believe that I could ever fit into my 21st dress after 40 years and it still looks good
Dr Rajeswaran was empathetic and took the time to listen carefully. I have no doubt that he will be able to untangle and unravel my somewhat complicated medical conundrum.
Thank you for seeing me today and reassuring me that all your investigations have ruled out any endocrine problems.
I especially appreciate your level of care and understanding of my illness problems as that made me feel better in myself today!
I will update you as agreed in the next month as to my situation and will contact you if needed for advice and or a recommendation for a consultant in gastroenterology.
Thank you once again!
Insights
Clinical Insights
Dr Rajeswaran's explanations of conditions he is often asked about.
Clinical insight
Creon and diabetes: how pancreatic enzymes affect blood sugar control
Read the article →
Clinical insight
Why am I not losing weight on levothyroxine?
Read the article →
Clinical insight
Hypoactive sexual desire disorder (HSDD) in women: causes and treatment
Read the article →
Clinical insight
DEXA scan: what it measures, what the results mean, and when you need one
Read the article →
Clinical insight
Hyponatraemia (low sodium): symptoms, causes and when to worry
Read the article →
Clinical insight
Osteoporosis: who's at risk, how it's diagnosed and how it's treated
Read the article →Featured in
Fees
Weight management
Comprehensive Consultation · up to 1 hour£375
An in-depth consultation with Dr Rajeswaran: your history, what is driving your weight, the investigations you need and your treatment plan — or an in-depth review of your progress, your results and your treatment.
Focused Consultation · up to 30 minutes£225
A brief, focused consultation with Dr Rajeswaran for where a comprehensive consultation isn't required. Reviews your progress, your results and your treatment, including ongoing medication reviews and confirming suitability for weight-loss medication.
Diabetes and endocrine
Initial Consultation £250Follow-up Consultation £200
Appointment lengths are indicative. Your consultation lasts as long as is clinically necessary. Our team will advise which consultation you need.
Full details of how we charge are on the clinic website →Patients in India
Dr Rajeswaran is Medical Lead at The London Obesity Clinic in Chennai, where the clinical team sees patients day to day under his oversight. He personally takes on the most complex cases. Fees there are set locally. Contact the Chennai clinic