The power of science and lifestyle in digestive health.
Asst. Prof. Dr. Koray Koçhan combines advanced diagnostic and treatment approaches for diseases of the stomach, intestines, liver and bile ducts with evidence-based lifestyle medicine.
3rd National Lifestyle Medicine Symposium
The symposium, which will address the scientific foundations and practice of lifestyle medicine, will be held at Biruni University. Dr. Koray Koçhan is the chair of the symposium.
Visit the symposium website →Dr. Koray Koçhan graduated from İstanbul University-Cerrahpaşa Faculty of Medicine (English-language program). He completed his internal medicine residency at the same faculty and his gastroenterology fellowship at the University of Health Sciences Haydarpaşa Numune Training and Research Hospital.
After serving at Ağrı State Hospital, Haydarpaşa Numune, Bezmialem Vakıf University and Liv Hospital Vadi Istanbul, he has been seeing patients and teaching as a faculty member at Biruni University Faculty of Medicine Hospital since 2025.
His main interests are inflammatory bowel diseases, celiac disease, clinical nutrition, liver, biliary and pancreatic diseases, and advanced endoscopic procedures. He plans diagnosis and treatment for each patient in a personalized, clear and transparent way.
Comprehensive gastroenterology, from diagnosis to treatment.
From everyday symptoms to advanced endoscopic procedures, the many stages of digestive health care.
Stomach and Esophageal Diseases
Reflux, gastritis, H. pylori, ulcers, dyspepsia, swallowing problems, Barrett’s esophagus and eosinophilic esophagitis.
Details →Intestinal Diseases
Irritable bowel syndrome, constipation, chronic diarrhea, diverticular disease and colon polyps.
Details →Inflammatory Bowel Disease
Crohn’s disease, ulcerative colitis and living with these conditions.
Details →Celiac Disease and Malabsorption
Celiac disease, gluten sensitivity, lactose intolerance and malabsorption.
Details →Liver Diseases (Hepatology)
Fatty liver (MASLD), hepatitis, cirrhosis, autoimmune liver disease and elevated liver enzymes.
Details →Biliary and Pancreatic Diseases
Gallstones, cholangitis, acute and chronic pancreatitis, pancreatic cysts.
Details →Gastrointestinal Cancers
Cancers of the esophagus, stomach, colon and rectum, pancreas, liver and bile ducts: risk, symptoms and screening.
Details →Advanced Endoscopic Procedures
Gastroscopy, colonoscopy, rectosigmoidoscopy, endoscopic ultrasound (EUS) and ERCP.
Details →Medication treats; habits heal.
Lifestyle medicine uses evidence-based behavioral interventions to prevent, treat and, where possible, reverse chronic disease. Its impact can be especially clear in digestive and liver conditions.
Nutrition
A fiber-rich, plant-forward pattern that feeds the gut microbiota and limits processed foods.
Physical Activity
Regular, sustainable movement that benefits bowel motility, metabolism and fatty liver.
Sleep
Sufficient, good-quality sleep, with attention to the link between circadian rhythm and gut health.
Stress Management
Managing stress as part of the gut-brain axis, especially in irritable bowel syndrome and reflux.
Social Connection
A supportive environment that strengthens adherence and motivation when living with chronic disease.
Avoiding Risky Substances
Reducing risk factors such as smoking and alcohol that harm the liver, stomach and intestines.
Lifestyle guidance does not replace medication or procedures; it works alongside them and is tailored to the patient’s real life.
Lifestyle Medicine →
Every person is a work in progress.
Just as a block of raw stone is shaped slowly, a healthy life is not built in a day: habit by habit, patiently, a little more each day. Lifestyle medicine supports this work with science and helps you plan together what to change, how much, and in what order.
The goal is progress, not perfection.
Four steps from consultation to follow-up.
Listen
A detailed history covering your symptoms as well as nutrition, sleep, stress and daily routine.
Assess
Laboratory, imaging and endoscopic tests, ordered only when needed.
Plan
A personalized, practical roadmap combining medical treatment and lifestyle guidance.
Follow-up
Support for lasting change through regular check-ups and shared review of goals.
Take the first step for your digestive health.
Call the Biruni University Hospital call center or book an appointment online.
444 8 276 · Call NowSefaköy, Küçükçekmece, Istanbul