Bariatric Surgery Knowledge Center
Everything you need to understand weight loss surgery in one place: 29 patient guides, 35 procedure pages, a medical glossary and free tools, reviewed by Dr. Mohammad Al-Zaitawi.
Start here
Patient guides by topic
All guides →Our Center's Diet Program
Articles for Patients in the USA
- How Much Does Gastric Sleeve Surgery Cost Without Insurance?
- Does Insurance Cover Gastric Sleeve Surgery?
- Gastric Sleeve Requirements: What BMI Do You Need?
- Gastric Sleeve vs Gastric Bypass: Which Surgery Fits You?
- Ozempic, Wegovy, or Gastric Sleeve: How Do the Results Compare?
- How Much Weight Do You Lose After a Gastric Sleeve?
- Gastric Sleeve Recovery: When Can You Fly and Return to Work?
- Does Medicare Cover Weight Loss Surgery?
Articles for Patients in Canada
Articles for Patients in the UK
- Can I Get a Gastric Sleeve on the NHS?
- How Much Does a Private Gastric Sleeve Cost in the UK?
- How Long Is the NHS Waiting List for Weight Loss Surgery?
- Weight Loss Surgery Abroad: What to Check Before You Book
- Will the NHS Look After Me If I Have Weight Loss Surgery Abroad?
- Gastric Sleeve or Gastric Bypass: How the Choice Is Made
Life After Weight Loss Surgery
- Can You Drink Alcohol After a Gastric Sleeve?
- Why Does Hair Thin After Weight Loss Surgery?
- What Is Dumping Syndrome After Gastric Bypass?
- What Can I Eat After Gastric Sleeve Surgery?
- Acid Reflux After a Gastric Sleeve: When Bypass Is the Better Fit
- Loose Skin After Weight Loss Surgery
- Pregnancy After Bariatric Surgery: How Long Should You Wait?
- Weight Regain After a Gastric Sleeve: When Is Revision Considered?
- Vitamins After Weight Loss Surgery: What You Take for Life
Procedures explained
All procedures →Medical glossary
Plain-English definitions of the terms you will meet in consultations and reports.
- Body Mass Index (BMI)
- Gastroesophageal Reflux Disease (GERD)
- Sleeve Gastrectomy
- Gastric Bypass
- SASI (Single Anastomosis Sleeve Ileal Bypass)
- Hiatal Hernia
- Weight Regain After Sleeve
Free tools
- BMI calculator
Check your body mass index and where it sits on the scale used for bariatric surgery.
- Weight loss predictor
See an approximate one-year weight range for the procedure you are considering.
- Free case review
Answer four short questions and send your case to the doctor's team on WhatsApp.
About the knowledge center
Who reviews the content in the knowledge center?
Articles and procedure pages are written for patients and medically reviewed by Dr. Mohammad Al-Zaitawi, a consultant bariatric, laparoscopic and robotic surgeon in Amman. Figures come from named guidelines, trials and public health bodies.
Does reading these guides replace a consultation?
No. The guides explain general rules and evidence. Whether an operation suits you depends on your BMI, reflux, diabetes, medicines and previous surgery, which is why every plan starts with a review of your records.
How do I ask about my own case?
Use the free case review or send your height, weight, medical history and any reports on WhatsApp. The team replies with the suitable next step.