Video
Small intestinal bacterial overgrowth (SIBO)
Premier consultant gastroenterologist Dr Aathavan Loganayagam provides an expert overview ...
Dr Aathavan Loganayagam
MB BS BSc MRCP
GMC: 4742373Professional statement
Dr Aathavan Loganayagam is a premier consultant gastroenterologist serving the south London community. His clinical practice is dedicated to providing rapid, accurate diagnoses and evidence-based treatment plans for a comprehensive range of digestive health conditions.
Dr Loganayagam specialises in the management of complex inflammatory bowel fisease (IBD), including Crohn’s disease and ulcerative colitis, as well as irritable bowel syndrome (IBS), acid reflux (GORD/GERD), and coeliac disease. He is a leading specialist for patients seeking relief from symptoms such as:
- Persistent abdominal pain and bloating
- Chronic indigestion and heartburn
- Diarrhoea, constipation, or rectal bleeding
- Unexplained changes in bowel habits
As a JAG accredited endoscopist, Dr Loganayagam maintains the highest national standards for procedural safety, quality, and patient comfort. He currently serves as the lead clinician for Endoscopy at Queen Elizabeth Hospital, Woolwich (part of Lewisham and Greenwich NHS Trust).
He offers expert diagnostic and therapeutic procedures, including:
- Gastroscopy (Upper GI Endoscopy)
- Colonoscopy and sigmoidoscopy (including advanced polypectomy)
- Video capsule endoscopy (Pill camera)
To ensure the best possible patient experience, Dr Loganayagam offers a personalized approach to procedures, providing a choice of local anaesthetic, conscious (mild) sedation, or deep sedation based on patient preference and clinical suitability.
Dr Loganayagam trained at the world-renowned Guy's, King's and St. Thomas' medical schools and completed his advanced specialty training within the south London gastroenterology programme.
His significant contributions to the field of personalised medicine and IBD research at Guy's and St Thomas' Hospitals have been recognised with multiple grants and the prestigious NHS Innovation London Award. This research background allows him to utilise the most modern, novel therapeutic agents for patients with complex gastrointestinal conditions.
Beyond his clinical practice, Dr Loganayagam is a respected medical educator and examiner. He is deeply involved in:
- Training and examining: Mentoring medical students and post-graduate doctors.
- MRCP examinations: Contributing to the quality assurance of examinations for the Royal College of Physicians (UK).
- International standards: Writing for the European specialty examination in gastroenterology and hepatology.
Dr Loganayagam is an approachable consultant who believes that clear communication and empathy are the cornerstones of outstanding medical care. He is committed to ensuring every patient feels fully informed, listened to, and actively involved in all decisions regarding their digestive health journey.
Clinics
The Blackheath Hospital - In clinic consultations only - part of Circle Health Group
40-42 Lee Terrace, Blackheath, London SE3 9UD, UK, Central LondonMedical insurances accepted
Credentials
Professional experience
- 26 years of experience
- Lead Clinician for Endoscopy, Queen Elizabeth Hospital, Lewisham and Greenwich NHS Trust, Woolwich (present)
Subspecialties
- Endoscopy
- Colonoscopy
Professional memberships
- Member of British Medical Association
- Member of British Society of Gastroenterology
Education
- Clinical Fellow in inflammatory bowel disease, Guy’s and St Thomas’ Hospitals, London (2008)
- Clinical Fellow in endoscopy, Guy’s and St Thomas’ Hospitals, London (2007)
Teaching posts
- Runs teaching sessions for GPs and patients
- Undertakes regular postgrauduate and undergraduate teaching in the areas of gastroenterology and endoscopy at Lewisham and Greeenwich NHS Trust
Positions in organisations
- Member of the Royal College of Physicians (MRCP) (2003)
- Member of the South East London Inflammatory Bowel Disease pathway development group (2015 - present)
Publications and conferences
- Numerous publications in peer reviewed journals on all aspects of gastroenterology.
- Autoimmune haemolytic anaemia is a rare association with primary biliary cirrhosis. Meade S, Kotha S, Gera A, Loganayagam A. Br J Hosp Med (Lond). 2016 Jun;77(6):370-1. doi: 10.12968/hmed.2016.77.6.370.
Prizes and awards
- Selected by the Gastro Scientific Committee for the best ten abstracts from a total of 2188 and awarded a travel grant to attend Gastro UEGW/WCOG, London (2009)
- Awarded the British Society of Gastroenterology Travelling Fellowship to attend the Annual Advanced Endoscopy Update Charleston, South Caroline, USA (2009)
Languages spoken
- English
- Tamil
Registration number: 4742373
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Other information
Reviews
All reviews are from real patients and have been verified by our Customer Service department to ensure they meet our guidelines. Rules of the service
- Would you recommend this doctor?
- Treatment of the doctor
- Treatment of the staff
- Waiting time
- Condition of facilities
- I was given the best care and attention by Dr Logan and the whole team. Really put me at my ease and made the whole process as pleasant as possible. I am very grateful and thankful.
- Well experience Dr who offered accurate diagnoses with a evidence based decision. Dr Loganayagam is also a clear communicatior. Excellent overall service.
- Dr Aathavan was awesome. Very detailed and explained me the pros and cons of the treatment in a very comprehensive manner. I would highly recommend him to anyone who wants to be reviewed by a gastroenterologist
- I have been under the care of Dr Loganayagam since being diagnosed with left-sided ulcerative colitis. He has always been incredibly kind, caring and supportive. He listens carefully, explains everything clearly and makes me feel genuinely well cared for. I feel very fortunate to have him as my consultant and cannot recommend him highly enough.
- I had an excellent procedure, and he was very informative about my problem and future management, explaining everything very clearly. Dr Loganayagam is a true professional. Thank you.
- Dr Loganayagam has looked after me for the last 7-8 years. He has a reassuring bedside manner and he is a leading expert in his field.
- Dr Loganayagam made sure my colonoscopy was entirely comfortable and stress-free. He explained every step of the procedure clearly, including what he was doing and why, which put me completely at ease. I would highly recommend him to anyone needing this procedure.
- Dr Loganayagam is a wonderfully friendly professional who truly listened, heard my concerns, and explained everything so clearly. I felt in very safe hands throughout. The endoscopy procedure itself was quick and a vastly better experience than my previous one. I felt exceptionally well looked after, and as an anxious parent, his calm and supportive approach was much appreciated. I highly recommend him.