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Bariatric & Metabolic Surgery



The word bariatrics was coined around 1965 and derived from the Greek root bar means “weight” as in barometer, the suffix -iatr means “treatment” as in paediatrics, and the suffix -ic means "pertaining to".

The field of Bariatrics includes approaches to weight loss by diet, exercise and behavioural therapy, as well as pharmacotherapy and surgery. The first weight-loss surgery performed in 1954 by Dr A.J. Kremen was a Gastric Bypass surgery. Kremen and his team linked the patients’ upper and lower intestine, which bypassed a large amount of the absorption of the calories. Later in 1963, this procedure was altered by adding a jejunocolic shunt.

Drs. Mason and Ito developed a small pouch gastric bypass in 1967, which involved a stapled stomach and a bypassed small intestine. This procedure at the time was referred to as an Intestinal Bypass, which had complications. So, in 1996 the Roux-en-Y procedure was established by Drs. Scopinaro and Gianetta, which now loops from the upper stomach to the small bowel and has fewer complications than the original Intestinal Bypass.

The modern techniques which we are aware of today did not begin taking shape until the early 1990s and then this weight-loss option started to gain popularity with patients especially because of advances in laparoscopic surgery.

The term Metabolic Surgery is used today to define weight loss treatments and procedures to treat metabolic diseases, specifically, type 2 diabetes. Gastric Bypass and Biliopancreatic diversion have resulted in control or cure of diabetes. There are guidelines to suggest who will be benefitted from Metabolic Surgery.

Overview of Bariatric & Metabolic Surgery :

Bariatric surgery is a surgical procedure performed on the stomach and/or intestines to help a person with extreme obesity to lose weight.

Types of Bariatric surgery:
  • Roux-en-Y (roo-en-Y) gastric bypass
  • Sleeve gastrectomy
  • Biliopancreatic diversion with duodenal switch
  • Mini Gastric Bypass

Bariatric surgery is mainly performed to help you lose excess weight and reduce your risk of life-threatening weight-related health problems, such as High blood pressure, Heart disease and stroke, Nonalcoholic fatty liver disease (NAFLD) or nonalcoholic steatohepatitis (NASH), Sleep apnea and Type 2 diabetes.

Bariatric surgery is an option if you have severe obesity (BMI > 35) and are unable to lose sufficient weight to improve your health using other methods or have serious health problems related to obesity. The surgery reduces the stomach size land sometimes changes the small intestine.

Aster CMI Hospital is the internationally recognised Center of Excellence for Bariatric & Metabolic Surgery in our country.

Visit Aster CMI hospital to consult the best Bariatric & Metabolic surgeon in India.

Diagnostic tests:

Before performing bariatric surgery, your surgeon will conduct the following investigations to assess your health condition.

  • Chest X-ray
  • Echocardiogram
  • Abdominal ultrasound
  • Blood studies - a complete blood count (CBC), blood urea nitrogen (BUN), cortisol, creatinine, electrolytes, prolactin and thyroid-stimulating hormone (TSH)
  • Electrocardiogram (EKG)

Contact Aster CMI hospital which is one among the best weight loss centres in Bangalore, equipped with advanced facilities for performing Bariatric Surgery in Bangalore.


What is obesity?

Obesity is a condition in which a person's Body Mass Index or BMI is more than 30 and it is calculated by dividing the height by weight. It often results from intake more calories than are burned by exercise and normal daily activities. A bariatric physician can treat patients with overweight and obese conditions.

What are the categories of obesity?

Obesity is diagnosed when your body mass index exceeds 30

BMI categories are:

  • Underweight - Below 18.5
  • Normal - 18.5-24.9
  • Overweight - 25.0-29.9
  • Obesity - 30.0 and higher
What are the causes of obesity?

Some of the common causes of obesity are lack of physical activity, overeating, genetics, medications, sleep deprivation, psychological factors, environmental factors, a diet high in simple carbohydrates and diseases like hypothyroidism, insulin resistance, polycystic ovary syndrome and Cushing's syndrome etc.

What are the risks of obesity or excessive fat?

The risks associated with obesity or excessive fat include high blood pressure, diabetes, heart disease and stroke, gallbladder disease, gout, osteoarthritis, pregnancy problems and breathing problems like sleep apnea and asthma.

Who is a candidate for bariatric surgery?
  • If you meet any of the following criteria, you could be a candidate aged between 16 and 70 years of age for bariatric surgery or surgical weight loss.
  • If BMI >= 35 or more than 100 pounds overweight.
  • If BMI >= 32.5 and has at least one or more obesity-related problems like type II diabetes, hypertension, sleep apnea and other respiratory disorders, non-alcoholic fatty liver disease, lipid abnormalities, gastrointestinal disorders, or heart disease.
  • Unable to achieve a healthy weight loss sustained for a period of time with previous weight loss efforts.
Is weight loss surgery or bariatric surgery safe?

Bariatric Surgery is one among the safest surgical procedures as it has few complications and risks. So, it is considered safe or safer when compared to other elective surgeries for weight loss. However, it is a major surgery that will have short and long term nutritional effects. Patients should be aware of both physical and psychological side effects that can occur after bariatric surgery.

Is bariatric surgery reversible?

Bariatric surgery is the most common method of gastric bypass and typically it is not reversible because it works by lowering the amount of food you consume at one sitting and reducing the absorption of nutrients. Surgery like Mini gastric bypass can be reversed.

How fast will I lose weight after bariatric surgery?

It is usually Six months post-surgery and the amount of weight loss after bariatric surgery depends on you and the type of surgery you have undergone.

What are the advantages of bariatric surgery?

Bariatric surgery can improve Obesity-related health conditions including type 2 diabetes, high blood pressure, sleep apnea, and unhealthy cholesterol levels. It also improves longevity, Long term weight loss success and changes in quality of life and psychological status with Surgery.

What are treatment options should be considered for obesity?

There are many treatment options available to treat obesity and a combination is usually used to manage obesity. It includes Lifestyle changes, Regular physical activity, Nutrition Modifications, Non-clinical weight management and Clinical weight management options.

Book an appointment online to consult the best Bariatrc & Metabolic surgeon in Bangalore at Aster CMI Hospital.