Bariatric Surgery Knowledge Center
Patient education articles on obesity and metabolic surgery — written for people considering, preparing for, or recovering from a bariatric procedure.
- Patient Education
BMI and How Obesity Is Defined
Body Mass Index, WHO classification and why BMI alone is not enough.
Read article - Decision Making
Sleeve Gastrectomy or Gastric Bypass: How the Decision Is Made
Key differences between the two procedures and what shapes the individual recommendation.
Read article - Nutrition
Nutrition Phases After Bariatric Surgery
From clear liquids to solid foods: how the post-operative diet progresses safely.
Read article - Metabolic Surgery
Type 2 Diabetes and Metabolic Surgery
How bariatric procedures can influence type 2 diabetes, and why patient selection matters.
Read article - Safety
Risks and Complications of Bariatric Surgery
Realistic information on early and late complications, and how follow-up reduces risk.
Read article - Patient Education
Bariatric Surgery: Common Myths and Facts
Clarifying widespread misunderstandings about bariatric and metabolic surgery.
Read article - After Surgery
Hair Loss After Bariatric Surgery: Why It Happens and What Helps
Telogen effluvium, protein and micronutrient roles, and what is usually temporary.
Read article - After Surgery
Returning to Exercise After Bariatric Surgery
A safe, staged plan from early walking to resistance training.
Read article - Long-Term Follow-Up
Weight Regain After Bariatric Surgery: Causes and Management
Why some patients regain weight after years and what evidence-based options exist.
Read article - After Surgery
Reflux After Sleeve Gastrectomy: Management Options
Why reflux can appear or worsen after sleeve, and how it is evaluated and treated.
Read article - Long-Term Follow-Up
Vitamins and Supplements After Bariatric Surgery
Lifelong micronutrient support is essential after sleeve, bypass, or mini-bypass.
Read article - Before Surgery
Psychological Evaluation Before Bariatric Surgery
Why a pre-operative mental health assessment is part of standard bariatric care.
Read article - Treatment Options
GLP-1 Medications vs. Bariatric Surgery: How to Compare
Where modern anti-obesity medication fits alongside bariatric surgery.
Read article - Long-Term Follow-Up
Pregnancy After Bariatric Surgery
Why waiting 12–18 months and structured prenatal care matter.
Read article - Lifestyle
Alcohol After Bariatric Surgery: What Changes
Why alcohol affects post-bariatric patients differently and what is recommended.
Read article - Patient Education
What Is Obesity? Causes and Health Effects
The medical definition of obesity, its main causes, and long-term health consequences.
Read article - Process
The Bariatric Surgery Process in Antalya
How the surgical journey is planned for local, out-of-town, and international patients.
Read article - Decision Making
Gastric Balloon vs. Sleeve Gastrectomy: Which Is Right for You?
A non-surgical endoscopic balloon and a surgical sleeve — how they differ and who each suits.
Read article - Decision Making
BMI 30–35 and Bariatric Surgery: When Is It Considered?
Can surgery be an option at BMI 30–35, and under what conditions?
Read article - After Surgery
Sexual and Reproductive Health After Bariatric Surgery
How weight loss can affect hormonal balance, fertility, and sexual wellbeing.
Read article - Process
International Patient Guide: Bariatric Surgery Abroad
How travel, surgery, and follow-up are planned for patients coming from abroad.
Read article - Patient Education
Body Fat Percentage and Waist Circumference: Why They Matter
BMI alone is not enough. Waist circumference and body fat percentage add critical metabolic context.
Read article - Decision Making
Obesity Medications (GLP-1/GIP) or Bariatric Surgery? A 2026 Decision Guide
Medication and metabolic-bariatric surgery are not competitors but different tools for the same chronic condition. How is the choice individualised?
Read article - Revision & Follow-Up
Reflux After Sleeve Gastrectomy: When Is Gastric Bypass or Revision Considered?
The steps taken to diagnose reflux after sleeve gastrectomy, medical treatment options, and when revisional surgery becomes a consideration.
Read article - Long-Term Follow-Up
Long-Term Follow-Up After Bariatric Surgery: Which Blood Tests and Vitamins Are Monitored?
The framework for lifelong follow-up after bariatric surgery: which tests, at what intervals, which supplements, and which alarm symptoms to know.
Read article - Before Surgery
Managing GLP-1 Medications (Semaglutide, Tirzepatide) Before Surgery
There is no single stop-taking-it-N-days-before rule: a 2026 guide to why the perioperative plan is individualised.
Read article - Warning Signs
Vomiting, Thiamine (B1) and Red-Flag Symptoms After Bariatric Surgery
Recurrent vomiting is not a 'normal' part of recovery — here is why it needs to be assessed quickly.
Read article - Women's Health
Planning Pregnancy After Bariatric Surgery: What Does the 12–18-Month Approach Mean?
The reasoning behind the commonly heard 12–18-month recommendation, and how pre-pregnancy assessment is planned.
Read article - Comparison
Endoscopic Sleeve Gastroplasty (ESG): How Does It Differ From a Gastric Balloon and Sleeve Gastrectomy? (2026)
ESG is an incision-free but still interventional endoscopic method; it is not the same thing as a gastric balloon or surgical sleeve gastrectomy.
Read article - Long-Term Treatment
GLP-1/GIP Medications for Weight Regain After Bariatric Surgery: When Are They Considered?
Weight regain after surgery is a possible course of a chronic disease, not a personal failure — here is how it is assessed and where medication may fit.
Read article - Nutrition and Exercise
Preserving Muscle During Rapid Weight Loss: Sarcopenic Obesity and Bariatric Surgery
The number on the scale does not tell you what kind of weight is being lost — here is why muscle preservation matters and how it is supported.
Read article - Metabolic Health
MASLD/MASH: The New Names for Fatty Liver and What Bariatric Surgery Changes
Fatty liver disease has been renamed to reflect its metabolic origins — here is what MASLD and MASH mean and where surgery fits into management.
Read article - Surgical Safety
Obesity, Sleep Apnoea and Obesity Hypoventilation Syndrome: Before and After Surgery
Obstructive sleep apnoea and obesity hypoventilation syndrome are related but distinct conditions — here is why the difference matters for surgical planning.
Read article - Long-Term Follow-Up
Gallstone Risk After Bariatric Surgery: Symptoms, Prevention and Gallbladder Surgery
Rapid weight loss changes bile chemistry and raises the chance of gallstones — here is what symptoms to watch for and how decisions about the gallbladder are made.
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This content is for general information only; it does not replace an examination, diagnosis or treatment.
Medical notice: The information on this page is for general patient education only and does not replace medical diagnosis, treatment, or a surgical decision. The appropriate method for you can only be determined after a physician's assessment and necessary tests.
Medical content editor: Op. Dr. Gökhan Ateş — Specialist in General Surgery
Patient information content
Site editor: atesdr@yahoo.com — Please do not send test results, reports, photographs or sensitive health data to this address.