Are you obese and tired of trying dieting, exercising, or herbal products bringing no results in losing stubborn fat? Gastric bypass surgery is a type of weight loss surgery, also known as “Roux-en-Y”, is a surgical procedure that helps lose excess weight and improve overall health.The procedure decreases the size of the stomach and modifies the length of the small intestine. As a result, the patient intakes fewer calories which eventually results in weight loss.

Common risks, complications, and side effects after gastric bypass surgery

Even though gastric bypass is a safe procedure, like any other surgical procedure it may have a few risks involved. However, the involvement of an experienced surgeon will lead to fewer complications and side effects.

Here are some common risks, complications, and side effects associated with the gastric bypass surgery-

  • Vomiting and nausea
  • Certain infection
  • Sudden weight gain
  • Fail to lose weight
  • Not able to digest certain foods
  • Dilation of esophagus
  • Acid reflux
  • Obstruction of stomach
  • Wound infection
  • Excessive bleeding

Unusual complications and side effects after gastric bypass surgery

Some patients’ bodies can feel complications after gastric bypass surgery in short-term and long-term duration.

Short-term complications 

In the short term, gastric bypass surgery can cause some unusual complications like-

  • Hernia – It results from serious muscle weakness and strain.Rapid weight loss after gastric bypass surgery can put strain on the abdominal wall, potentially increasing the risk of hernia formation

  • Small bowel obstruction – It is a condition in which the small intestine gets blocked and it could interfere with digestion and absorption of food and liquid.

  • Stomach ulcers – It occurs when certain digestive acids in the body damage the stomach lining.

  • Anastomotic leaks – In gastric bypass surgery, the small intestine reconnects to more than one place, and if by any chance the incision leaks then it can lead to severe infection in the body.

  • Abscess – It is a buildup of pus that can happen after the surgery because some of the liquid in the intestine gets spilled or leaked. 

Long-term complications

In the long term, after 10-15 years gastric bypass surgery can cause some unusual complications like-

  • Malnutrition – In gastric bypass surgery, doctors decrease the size of your stomach to absorb fewer calories than usual and it eventually results in not getting adequate nutrients, especially if you are experiencing diarrhea and nausea. Your surgeon will suggest certain vitamins and minerals to include in the diet to stay healthy and fit.

  • Weight regain – If you do not change your eating habits then over time your stomach may stretch again. This condition can happen when you don’t follow post-surgery instructions and intake larger meals. Research has stated that about 25-35% of individuals experience this problem.

  • Food intolerance – After surgery, it is possible that you may not be able to eat and digest food in one go compared to before. Majorly you should avoid eating foods like rice, pasta, meat, and bread.

  • Gallstones – Sudden weight loss sends large amounts of cholesterol to the liver. Excess cholesterol buildup in the gallbladder can result in the development of stones or hardened deposits over time.

  • Dumpling syndrome – This condition can happen in a long duration after gastric bypass surgery. It occurs when your stomach dumps food too fast in the small intestine. Major symptoms can include nausea and diarrhea. Visit your doctor for gastroenterologist guidelines and medications.

  • Addiction – Food is a source of distraction for many people, which eventually turns into eating disorders. After the surgery, there is a chance they may divert their addiction to something else like alcohol, drugs, sex love, etc.

  • Gastroesophageal reflux – A complication an individual can experience in the long term which includes symptoms of bloating, feeling of fullness, heartburn, and upset stomach.


Many individuals give positive feedback in later years. However, gastric bypass surgery can cause either medical or mental health complications lasting up to many years. It is crucial to discuss all the possible complications, risks, and side effects with your surgeon before making the decision. Gastric bypass demands a lifelong commitment. Prepare yourself and follow all the guidelines as advised to reduce the severe post-op side effects and complications.


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