Laparoscopic Gastric Bypass

Why Should You Consider it?

  • It has the longest track record in the US, having been performed since 1967.
  • It combines “restriction” and “malabsorption.”
  • Restriction means “create a stomach pouch that holds 1-2 ounces.”
  • Malabsorption means “a 100 cm limb of small intestine is bypassed by attaching to the pouch.”
  • It is very effective in obtaining and maintaining long-term weight loss.
  • 66% of weight loss occurs in the first 6-8 months after surgery.
  • An Average of 60-80% of excess body weight is lost by the end of 2 years.
  • At the 10 year mark, the average patient will have lost about 70% of their excess weight and kept it off.

Gastric Bypass Procedure

A small stomach pouch is created to restrict food intake. Next, a Y-shaped section of the small intestine is attached to the pouch to allow food to bypass the lower stomach, the duodenum (the first segment of the small intestine), and the first portion of the jejunum (the second segment of the small intestine). This bypass reduces the absorption of nutrients and thereby reduces the calorie intake.

During a gastric bypass, you will be given general anesthesia, which means you will be asleep and feel no pain throughout the procedure. Your surgeon will then create 4 to 6 small surgical openings on your abdomen. The laparoscope and small surgical instruments are introduced through these openings into your abdomen. Your surgeon will then divide your stomach and re-route your small intestine. At the end of the operation, the surgeon will check the new connections to make sure there are no leaks.

Gastric bypass is an inpatient procedure requiring a hospital stay of 1-2 nights. The surgery takes about 60 to 120 minutes. Depending on your condition, you may be given a clear-liquid diet the day of your surgery. You may be able to start a pureed diet before you go home. You will be given medications to help alleviate any pain or discomfort. You will be instructed on a special diet plan to follow after surgery.


  • Long track record in the US
  • Rapid weight loss in the first six months
  • Best operation to cure diabetes, high blood pressure, and sleep apnea
  • Tend to lose more weight than patients after gastric band or sleeve gastrectomy


  • Longer recovery time
  • Not considered reversible, but could be reversed if medically necessary
  • Staple line can leak after surgery
  • Minor late weight regain 10-20% after 2-5 yrs
  • Nutritional/mineral supplements required for life

Contact Us Today!

Discuss your options with one of our seasoned professionals. Together we will explore the pros and cons of Gastric Bypass and whether it’s the right surgery for you. Gastric bypass surgery from the doctors at Birmingham Minimally Invasive Surgery has helped many patients take control of their lives.