Gastric bypass surgery, also known as Roux-en-Y Gastric Bypass Surgery (RYGB), is the “gold standard” for weight loss surgery.Obese patients with obesity or obese patients who have serious medical conditions that will improve with weight loss (for example, type 2 diabetes or high blood pressure) are potential candidates.

During gastric bypass surgery, a small pouch is made from the patient’s stomach. The new stomach is then connected to the lower part of the small intestine. Patients lose weight because their stomachs can hold only small amounts of food. They lose weight because they absorb fewer calories because the food bypasses the upper part of the small intestine.

Verywell / Laura Porter

Diagnosis of gastric bypass surgery

The primary goal of gastric bypass surgery is obesity to improve or reverse the medical conditions associated with obesity.

Examples of such conditions associated with obesity are:

  • Heart disease such as high blood pressure (hypertension) ոն coronary artery disease
  • Lung diseases such as obstructive sleep apnea, obesity hypoventilation syndrome, asthma
  • Venous conditions such as deep vein thrombosis և pulmonary embolism
  • Metabolic conditions such as type 2 diabetes, non-alcoholic fatty liver disease և high cholesterol
  • Reproductive conditions such as infertility և polycystic ovary syndrome (PCOS)
  • Urinary tract conditions such as stress urinary incontinence
  • Diseases of the gastrointestinal tract, such as gallstones, gastroesophageal reflux disease (GERD) զ esophagitis
  • Diseases of the musculoskeletal system, such as hernia և osteoarthritis
  • Nervous system conditions such as idiopathic intracranial hypertension


There are certain criteria that a patient must meet in order to be considered a candidate for weight loss surgery such as gastric bypass.

These criteria include the patient:

  • Body mass index (BMI) greater than or equal to 40
  • Over 35 BMI with one or more obesity-related health conditions
  • BMI over 30 with type 2 diabetes mellitus or metabolic syndrome

Abdominal weight loss surgery due to the higher prevalence of obesity in the abdomen (obesity) may be considered for Asian patients with type 2 uncontrolled diabetes with a BMI below 27.5.

That said, meeting one of the above criteria is just the first step in deciding who is the right candidate for surgery. Patients must be able to prove that they have failed to maintain a healthy weight through non-surgical means, such as lifestyle changes and medication.

Coverage of weight loss surgery

If you are considering gastric bypass surgery, be sure to contact your insurance company to verify that you have met the requirements for surgery coverage.

Tests և laboratories

To confirm the candidacy պատրաստ to prepare for surgery, patients must undergo several assessments with different health care providers, which usually begin a few weeks or months before the actual date of the procedure.

These health professionals include:

  • Bariatric (weight loss) doctor
  • Bariatric surgeon
  • Dietitian or nutritionist
  • Psychologist or psychiatrist

The: bariatrician I will review your medical history և check for tests for a new diagnosis or monitoring of your obesity. Some of these conditions may need to be optimized before surgery to reduce the risk of surgical complications.

Examples of such tests include:

Your bariatrician will probably start you on a weight loss medical plan, as it is usually advisable to lose some weight before surgery.

Yours: Bariatric surgeon Will discuss the pros and cons of surgery with you, admit you to a bariatric preoperative education program. The purpose of this program is to know the nuances of surgery, including what to expect in the short-term, long-term recovery process, as well as the potential risks associated with it.

a nutritionist will prepare you for your diet after surgery. They will also help you stick to the low-calorie liquid diet, which is often required two to four weeks before surgery.

a psychologist or psychiatrist will discuss the mental and emotional stresses associated with surgery and its aftermath. Because mental health conditions, especially depression and eating disorders, are associated with obesity, your mental health professional may also prescribe therapy or prescribe medication.

Finally, you may need to consult with a specialist before surgery. For example, women of childbearing age bypassing their stomachs may need an obstetrician to discuss options for preventing childbirth after surgery.

This is because professional societies, such as the American College of Obstetricians and Gynecologists (ACOG), advise women to become pregnant within the first 12-18 months after pregnancy surgery.

Word from Verywell

The potential benefits of gastric bypass surgery are enormous. In addition to improving serious health problems (if not reversing), patients feel better about their appearance և often mention that they have increased self-esteem որ quality of life.

However, undergoing this type of surgery is an incredibly big decision that requires deep thought. As you continue to educate yourself about stomach bypass or other weight loss surgeries, do not hesitate to lend a helping hand to your loved ones.

Remember to be kind to yourself during this long, difficult journey. It is a good idea to just take one day a day and stay focused on your ultimate goal of achieving a healthier life that you truly deserve.