Knowledge Center

A well-informed patient is the
best partner in the room.

From the science of obesity to GLP-1 therapy, from post-surgery nutrition to long-term metabolic management, every piece of content here is designed to give you a clearer starting point before you walk through the door.

50+

clinical articles

80+

FAQ answers

topic categories

Dr. Ser

"I don't like patients making decisions without a clear picture. The information here isn't meant to push you toward anything, it's meant to help you think through the right questions."

Reviewed by Dr. Kong-Han Ser

20 years of clinical experience, 4,000+ cases. All content reflects Dr. Ser's actual clinical judgment, not a copy-paste from a textbook.

Honest about trade-offs

Every treatment option is presented with both its benefits and its limitations. Our goal is to help you find the right path, not to sell you a particular one.

From reading to action

Each category includes practical Q&A and clinical context, so you can come in with questions and leave with direction.

Updated with the evidence

GLP-1 therapy and metabolic surgery guidelines continue to evolve. Content is updated when the evidence changes, not on a schedule.

Topic categories

Choose what you want to understand

Each category has a full set of articles and Q&A, find the section that matters most to you right now.

Surgery Q&A

From evaluation to surgery, from the operating room to recovery, complete answers to every question you have about metabolic surgery.

What preparation is needed before surgery?
What are the risks, and how safe is it?
How long before I can return to normal life?
What does the evaluation process look like?

Hot topic

GLP-1 Therapy

GLP-1 medications are the most talked-about tool in weight management today. Understand how they work, what they can and can't do, and who they're right for.

What is a GLP-1 receptor agonist?
Will I regain the weight if I stop?
Who is a good candidate, and who isn't?
What are the side effects and how are they managed?

Post-Surgery Nutrition

How you eat after surgery directly affects your long-term results. A complete guide from liquids to normal food, with practical advice for every stage.

What are the five dietary stages after surgery?
Why does protein intake matter so much?
Which vitamins need to be supplemented?
How do you manage eating out?

Metabolic Disease

Obesity is about more than appearance. Understand how excess weight affects metabolism, blood sugar, cardiovascular health, and whole-body function.

What is the relationship between obesity and diabetes?
What is metabolic syndrome?
Why is dieting alone so difficult?
How does obesity affect sleep and joints?

Body Composition Analysis

BMI only tells you your weight-to-height ratio. Body composition analysis reveals what's actually happening inside, muscle, fat, visceral fat, and metabolic rate.

How is InBody different from a regular scale?
How do I read an InBody report?
What level of visceral fat is dangerous?
What happens when muscle mass is too low?

Children & Family

Childhood obesity is not the child's fault, and it's not the parents' failure either. Early recognition and the right kind of support make the real difference.

At what point is a child's weight a concern?
What are the health effects of childhood obesity?
How can families provide real support?
When should medical help be considered?

Diagnostic Tests

Blood work, hormones, imaging, learn to read the signals your body is sending through clinical tests, and understand what the numbers actually mean.

Which blood markers are related to obesity?
Can hormonal imbalance cause weight gain?
Can genetic testing predict weight loss outcomes?
When is an abdominal ultrasound needed?

Exercise & Weight Loss

Exercise is about more than burning calories. Learn how to use movement correctly to support your weight loss and metabolic goals, not work against them.

Cardio or strength training, which is more effective?
I exercise regularly. Why isn't the weight moving?
When can I start exercising after surgery?
How do I start safely with low muscle mass?

Mental Health & Well-Being

Obesity and psychology have never been separate. Emotions, stress, eating behavior, integrating mind and body is the foundation for lasting change.

What can I do about emotional eating?
How are obesity and depression or anxiety connected?
What mental preparation is needed before and after surgery?
When should psychological support be involved?

Common questions

The questions we hear most often

Answered directly by Dr. Ser's team.

GLP-1 or surgery, which is better?

These aren't competing options, they're tools for different situations. GLP-1 therapy suits patients with lower BMI, fewer comorbidities, and willingness to commit to long-term medication. Surgery is better suited for patients who need more durable, significant metabolic change. Dr. Ser's approach is to find the path that genuinely fits you, not to promote a particular option.

How safe is metabolic surgery?

Modern laparoscopic metabolic surgery has a very low complication rate. In the hands of an experienced surgeon, serious complications occur in fewer than 1% of cases. Dr. Ser has performed over 4,000 procedures, with comprehensive protocols covering pre-operative assessment, surgical execution, and post-operative follow-up. Safety is always the primary consideration.

What do I eat after surgery? Can I return to a normal diet?

Post-surgery nutrition progresses through five stages: clear liquids → full liquids → pureed → soft → regular texture. Most patients can gradually return to a near-normal diet within 6–8 weeks, though portions will be significantly smaller than before. Long-term, balanced eating with adequate protein is key to maintaining results. Our dietitian team provides personalized guidance throughout.

Can metabolic surgery treat type 2 diabetes?

Yes. Metabolic surgery (particularly gastric bypass procedures) has a well-documented effect on type 2 diabetes remission. Some patients are able to reduce or stop insulin entirely after surgery. This isn't just because of weight loss, the surgery itself directly alters gut hormone secretion in ways that improve glucose regulation.

What is InBody, and why does it matter more than BMI?

A standard scale only measures total weight. InBody measures muscle mass, fat mass, visceral fat, and basal metabolic rate separately. The goal of treatment isn't just a lower number on the scale, it's reducing fat while preserving muscle. InBody shows what's actually changing inside your body, making it a far more useful clinical tool than BMI alone.

Will I regain weight after stopping GLP-1 medication?

GLP-1 medications produce meaningful weight loss while in use, but stopping without building sustainable lifestyle habits alongside them often leads to gradual weight return. This doesn't mean the medication failed, obesity is a chronic condition that requires a long-term management strategy. Dr. Ser combines medication with dietary guidance and behavioral adjustment to make every treatment choice as effective as possible.

What is ESG. Endoscopic Sleeve Gastroplasty?

ESG is a minimally invasive procedure that reduces stomach volume by suturing the stomach wall endoscopically, no incisions, no external scars, shorter recovery. It's suitable for patients with BMI in the 27–35 range who want effective weight loss without traditional surgery. In terms of outcome, it sits between medication and metabolic surgery, and is an important option in the treatment ladder.

How long does post-surgery follow-up last?

Long-term follow-up is one of the most important factors in surgical success. Standard check-ins are at 1, 3, 6, and 12 months post-surgery, then annually. Each visit covers weight, nutritional markers, and comorbidity status. Dr. Ser's philosophy: surgery is the beginning, not the end, the follow-up care that comes after is what determines long-term outcomes.

A well-informed patient is the best partner in the room.