What is a Gastric Bypass Surgery?

With gastric bypass surgery a small stomach pouch is created.  Next, a Y-shaped section of the small intestine is attached to the pouch to allow food to bypass the lower stomach

With gastric bypass surgery the stomach is divided into a small upper part and a much larger lower part.  Next, a section of the small intestine is attached to the small pouch to to allow food to enter directly into the small bowel, thus bypassing most of the stomach and about one third of the small bowel. Food is therefore not absorbed from this bypassed section.

The procedure is mostly carried out laparoscopically.

This gastric surgery reduces the absorption of nutrients and so reduces the calorie intake leading to weight loss.

Good weight loss results can be achieved however this procedure is not reversible and long term nutritional/mineral supplements are required in order to avoid anaemia and vitamin deficiencies that may lead to bone density problems in the future.

What are the advantages of Gastric Bypass?What are the disadvantages of Gastric Bypass?
  • “Dumping syndrome” if sweets and chocolates taken
  • Good operation for sweet eaters
  • Long track record
  • Tend to lose a little more weight than gastric band
  • Open surgery therefore increased risks
  • Longer recovery time
  • Permanent
  • Not reversible
  • Staple line leak
  • Minor late weight regain 10-20% after 2-5 yrs
  • Nutritional/ mineral supplements required

Residual stomach capacity: 30-50mls

Estimated weight loss: 60-70% EWL over 2 years.

Find out about more information on the obesity services provided:

Contact Us

If you think you are ready to start your journey to good health contact our centre today!

Dr. Stephen Wilkinson – Tasmania Antiobesity Surgery Centre

Hobart Private Hospital
Suite 1, Ground Floor
Cnr Collins and Argyle Streets
Hobart TAS 7000

Ph: 03 6214 3063
03 6214 3066
Fax: 03 6214 3064

North West Private Hospital
21 Brickport Road
Burnie TAS 7320

Ph: 03 6432 6000
Fax: 03 6432 6099