Andrea Bariatric Surgery

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Andrea Bariatric Surgery Whether it's 5kg or 50kg to lose, we can help you achieve it and be healthy

Advanced weight loss through minimally invasive surgery

Dr. Andrea Ooi is a dedicated surgeon who brings with her more than 20 years of medical experience. She has helped many individuals achieve and sustain their ideal weight through bariatric surgery over the years. She is also a known expert in obesity and metabolic management and has published more than ten research articles and presentations related to this highly specialised field. She is a committee member in the Malaysia Metabolic and Bariatric Society and member of the The Obesity Society, the American Society of Metabolic and Bariatric Surgery and the International Federation for the Surgery of Obesity and Metabolic Disorders. She was a Committee Member in the QAP Hospital Selayang as a supervisor in the Special Task for the accreditation program in Surgery Department. Dr Andrea is also a visiting lecturer at the Academy for Family Physician of Malaysia. She also lectures at the University for Institute of Teknologi MARA and Penang Medical College.

Many people worry about the cost of obesity treatment.Some are concerned about medication side effects.Some are afraid o...
11/09/2026

Many people worry about the cost of obesity treatment.

Some are concerned about medication side effects.
Some are afraid of surgery.
Some feel they should just “try harder” on their own first.

These are understandable concerns.

But there is another question that is just as important:

What happens if nothing is done?

Obesity is not a harmless condition that simply stays the same.

Over time, it can contribute to diabetes, high blood pressure, fatty liver, sleep apnoea, joint pain, heart disease and other health problems.

And these problems often do not appear all at once.

They creep in slowly.

One medication becomes two.
Knee pain gets worse.
Sleep becomes poorer.
Energy drops.
Walking feels harder.
Things that used to be easy start taking more effort.

By the time treatment is finally considered, obesity may already be affecting much more than weight alone.

That is the part that can get missed when people think about the “cost” of treatment.

Yes, treatment costs money.
Yes, medications can have side effects.
Yes, surgery has risks.

But leaving obesity untreated also comes with risks and costs.

The real comparison is not:

Treatment versus nothing.

It is:

The risks and costs of treatment versus the risks and costs of untreated obesity.

And that balance is different for every person.

The aim is not to suggest that everyone needs medication or surgery.

It is to make sure the decision is made with a clear understanding that inaction is also a choice — and it is not always the safer one.

So instead of only asking:

“Can I afford treatment?”

It may also be worth asking:

“What could it cost me if I keep putting it off?”

Sometimes, the hidden cost of obesity is not the treatment.

It is waiting until health has already started to decline.

Selamat menyambut Hari Merdeka buat semua rakyat Malaysia
31/08/2026

Selamat menyambut Hari Merdeka buat semua rakyat Malaysia

How much weight loss can we realistically expect?Not all weight-loss treatments produce the same average result.Based on...
07/08/2026

How much weight loss can we realistically expect?

Not all weight-loss treatments produce the same average result.

Based on clinical studies, the approximate total body weight loss we see is:

Lifestyle modification alone
Diet, exercise and behavioural changes
➡️ ~5–10% weight loss

Lifestyle + modern weight-loss medication
Using (tirzepatide/mounjaro) as the current benchmark
➡️ ~15–22% weight loss

Bariatric / metabolic surgery
Such as sleeve gastrectomy or gastric bypass
➡️ ~25–32% weight loss

So for someone starting at 100 kg, that roughly translates to:

Lifestyle alone → 5–10 kg
Medication + lifestyle → 15–22 kg
Bariatric surgery → 25–32 kg

Of course, these are averages from clinical studies, not guarantees. Some people lose more, some less.

And weight loss percentage is not the only consideration.

The right treatment depends on the severity of obesity, associated medical problems, previous attempts at weight loss, treatment preference, affordability, risks and how sustainable the treatment will be long term.

The important point is this:

Obesity treatment is not simply “diet and exercise harder.”

We now have different levels of treatment available, and treatment should be matched to the individual and the severity of the disease.

Bariatric surgery is not “done” once the operation is over.The surgery may help you lose weight, but regular follow-up i...
17/07/2026

Bariatric surgery is not “done” once the operation is over.

The surgery may help you lose weight, but regular follow-up is still important to make sure your body is doing well in the long term.

After surgery, we usually monitor:

• Your weight and muscle mass
• Your eating pattern and any symptoms
• Your vitamin and mineral levels
• Your overall health, including diabetes, blood pressure and cholesterol

Regular blood tests are important because nutritional deficiencies can happen quietly. You may feel completely fine, but your iron, vitamin B12, vitamin D, calcium or protein levels may already be low.

Supplements are also not something to take only for the first few months. Depending on the type of surgery, some vitamins and minerals may need to be continued long term.

Common tests may include:

• Full blood count and iron studies
• Vitamin B12 and folate
• Vitamin D and calcium
• Liver and kidney function
• Protein levels
• Zinc, copper or thiamine when needed

The exact follow-up plan will be different for each person.

So even when your weight is stable and you feel healthy, don’t skip your reviews, blood tests or supplements.

Long-term success after bariatric surgery is not only about losing weight. It is also about staying healthy.

Taking a GLP-1 medication such as Ozempic, Wegovy or Mounjaro?There aren’t many foods that are completely off-limits.How...
19/06/2026

Taking a GLP-1 medication such as Ozempic, Wegovy or Mounjaro?

There aren’t many foods that are completely off-limits.

However, some foods and drinks are more likely to worsen common side effects such as nausea, bloating, reflux, vomiting or diarrhoea.

⚠️ Be careful with:

🍟 Fried and greasy foods
→ Can sit in the stomach longer and worsen nausea.

🍔 Large meals
→ GLP-1 medications slow stomach emptying, so overeating can cause significant discomfort.

🌶️ Very spicy foods
→ May trigger reflux or stomach irritation in some people.

🍰 High-sugar foods
→ Can lead to stomach upset and energy crashes.

🍺 Alcohol
→ May worsen nausea and increase the risk of dehydration.

🥤 Carbonated drinks
→ Can cause bloating and abdominal discomfort.

☕ Excess caffeine
→ May aggravate stomach symptoms and contribute to dehydration.

💡 Instead, focus on:
✅ Protein-rich foods
✅ Vegetables and fibre
✅ Adequate hydration
✅ Eating slowly
✅ Smaller, more frequent meals

Remember: not everyone reacts the same way. The goal is to identify your own triggers and adjust accordingly.

Feeling nauseous after your GLP-1 injection?Nausea is one of the most common side effects of medications such as semaglu...
05/06/2026

Feeling nauseous after your GLP-1 injection?

Nausea is one of the most common side effects of medications such as semaglutide and tirzepatide—especially when first starting treatment or after increasing the dose. It often improves as your body adjusts.

Here are some ways to manage it:

1. Eat slowly and stop early
GLP-1 medications slow stomach emptying. Once you begin feeling full, stop eating. Trying to finish your usual portion may worsen nausea.

2. Reduce your portion size
Take smaller meals more frequently instead of having one large meal. You may need a much smaller portion than before starting treatment.

3. Avoid heavy, oily or spicy food
Fried food, fatty meals, rich sauces and spicy dishes may sit in the stomach longer and trigger more discomfort.

4. Stay hydrated—but sip slowly
Take small, frequent sips throughout the day. Drinking a large amount at once, particularly during meals, may make you feel overly full.

5. Avoid lying down immediately after eating
Remain upright and allow time for the food to settle.

6. Do not rush your dose escalation
A higher dose is not always better. If nausea is persistent, your doctor may advise remaining at the current dose longer, reducing the dose or prescribing medication for nausea.

Seek medical attention if you have:

• Repeated vomiting or cannot keep fluids down
• Signs of dehydration, such as dizziness or very little urine
• Severe or persistent abdominal pain
• Abdominal pain that travels to the back
• Fever, yellowing of the eyes or very dark urine

Do not stop or change the dose on your own. Speak to your treating doctor so that your treatment can be adjusted safely.

The goal is not to suffer through the highest possible dose. The goal is to find a dose that is both effective and tolerable.

PCOS is now being renamed PMOS.For the longest time, PCOS has sounded like it is mainly a problem with “cysts” in the ov...
15/05/2026

PCOS is now being renamed PMOS.

For the longest time, PCOS has sounded like it is mainly a problem with “cysts” in the ovaries. But many women with PCOS know it is much more than that.

It can affect your periods, skin, hair growth, fertility, weight, cravings, insulin resistance, mood, and long-term metabolic health.

And this is why the name PMOS — Polyendocrine Metabolic Ovarian Syndrome feels more accurate. It recognises that this is not just a gynaecological issue. It is also a hormone and metabolic condition.

This matters because many women with PCOS are still told to “just lose weight” without anyone explaining why weight loss can be so difficult in the first place.

When insulin resistance, appetite changes, hormonal imbalance, and metabolic dysfunction are part of the picture, weight management is not simply about willpower.

Of course lifestyle still matters. But some patients may also need proper medical assessment, targeted treatment, weight management support, fertility support, and long-term metabolic monitoring.

So yes, the name change matters.

Because for many women, it finally describes the condition more honestly.

PCOS/PMOS was never just about cysts.

Bariatric surgery is not cosmetic surgery.It is not simply “cutting the stomach to look smaller” or a shortcut for weigh...
30/04/2026

Bariatric surgery is not cosmetic surgery.

It is not simply “cutting the stomach to look smaller” or a shortcut for weight loss.

Bariatric surgery is a metabolic and medical treatment for obesity. It works by changing the way the body regulates appetite, fullness, hormones, blood sugar, and weight. For many patients, it can improve obesity-related conditions such as diabetes, high blood pressure, fatty liver, sleep apnoea, joint pain, and more.

But surgery is only one part of the treatment journey.

After bariatric surgery, regular medical follow-up is very important. Patients need monitoring for:

• Nutritional deficiencies
• Protein intake
• Muscle loss
• Weight regain
• Medication adjustments
• Gastrointestinal symptoms
• Long-term metabolic health

This is why follow-up with a bariatric team is not optional. It is part of the treatment.

Bariatric surgery should not be viewed as a beauty procedure. It is a serious medical intervention for a serious chronic disease, and it deserves proper long-term care.

The goal is not just to lose weight.

The goal is to lose weight safely, improve health, preserve muscle, prevent complications, and maintain the results for the long term.

Ramadan Mubarak 🌙Wishing you a month of peace, blessings, and renewed strength.May this Ramadan nourish your body, mind,...
19/02/2026

Ramadan Mubarak 🌙

Wishing you a month of peace, blessings, and renewed strength.

May this Ramadan nourish your body, mind, and soul.

Galloping into the Year of the Horse with strength, momentum, and bold new goals May this year bring you powerful stride...
16/02/2026

Galloping into the Year of the Horse with strength, momentum, and bold new goals

May this year bring you powerful strides toward better health, renewed energy, and unstoppable confidence.

Here’s to a year full of horsepower — in life and in wellness.

Gong Xi Fa Cai!

Address

47, Jalan PJS 11/28B
Petaling Jaya
46150

Opening Hours

Monday 10:00 - 18:00
Tuesday 10:00 - 18:00
Wednesday 10:00 - 18:00
Thursday 10:00 - 18:00
Friday 10:00 - 18:00
Saturday 10:00 - 18:00

Telephone

+60195888788

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