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Department of metabolic (weight loss)

Dr. med. Michael Frenken
general surgery, metabolic surgery

About the department

The metabolic (weight loss) surgery department at Academic Hospital zum Heiligen Geist Frankfurt am Main specializes in diagnosing and treating patients with various metabolic diseases. The main focus is on the surgical treatment of patients with type 2 diabetes. The choice of surgical procedure depends on many factors, including the severity of the metabolic disease, the age, sex, and weight of the patient, previous medical conditions, and previous abdominal surgery. Doctors also take into account the wishes of the patient. All interventions are now routinely performed laparoscopically, using the keyhole technique. The medical team works closely with all necessary partner disciplines such as gastroenterology, psychology, endocrinology and diabetology to provide quality medical services. The specialists of the department work according to the standards of the German Diabetes Society and the Surgical Working Group for Obesity Therapy and Metabolic Surgery.

The main goal of metabolic surgery is to improve metabolic diseases, while the most crucial aspect for the patient is to improve the quality of life. Therefore, doctors prescribe treatment conservatively when possible, but minimally invasive surgery is performed in most cases. As a rule, after therapy, there is a significant improvement in secondary diseases, a decrease in obesity, and, in addition, an increase in life expectancy.

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Treatment and diagnostic focus of the department


  • Metabolic disorders 
  • Diabeted mellitus type 2 
  • Obesity 
  • Familial hypercholesterolemia
  • Gaucher disease
  • Hunter syndrome
  • Krabbe disease
  • Maple syrup urine disease
  • Metachromatic leukodystrophy 


  • Anamnesis (history of the disease) 
  • Physical examination (body mass index) 
  • Laboratory and biochemical tests 
  • Oral glucose tolerance test 
  • Measure blood pressure 
  • Ultrasound examination 
  • Computed tomography 
  • Hormone panel 
  • Gastroscopy, colonoscopy 
  • Lipid profile test 


  • Drug therapy 
  • Hormone therapy 
  • Roux-Y gastric bypass (RYGB)
  • One anastomosis gastric bypass (OAGB/MGB)
  • Biliopancreatic Diversion with Duodenal Switch (BPD-DS)
  • Single anastomotic duodenal switch (SADI)
  • Cohen's duodenojejunal bypass
  • Ileum interposition, according to de Paula
  • Intestinal division, according to Santoro
  • Other treatment procedures 
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Doctor profile


  • Doctoral dissertation at Düsseldorf Frenken University Hospital


  • 2001 - 2011 Chief Physician of the Department of Surgery in Monheim am Rhein
  • Heidelberg University Hospital
  • Hospital Sachsenhausen
  • Head of the Center for Obesity, Diabetes and Metabolic Surgery, Fulda Clinic
  • Head of Department of Metabolic Surgery, Academic Hospital zum Heiligen Geist Frankfurt am Main
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