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About

PERTH WEIGHT LOSS & SURGERY
MEET MR.SIVA GOUNDER

Siva is originally from Malaysia and has made Perth home since 2007. He completed his medical degree in Manipal Academy of Higher education in 1999. He returned to Malaysia and completed his postgraduate specialist surgery training in General Surgery from University of Malaya in 2007 and prior to that he was awarded membership with the Royal College of Surgeons (Edinburgh) in 2005

He migrated to Perth and underwent further specialized advanced surgical training in all major Perth hospitals through the Royal Australasian College of Surgeons training program. He successfully obtained the Fellowship of the Royal Australasian College of Surgeons (FRACS) in 2015.

He was subsequently selected for a Bariatric Surgery fellowship in North Shore Hospital, Auckland which he successfully completed in 2016. This is an OSSANZ accredited bariatric surgery training position and the only one in New Zealand where the Laparoscopic Duodenal Switch operation for obesity is performed. He has trained to deal with obesity and all related problems. He is fully trained to provide various treatment options to treat obesity. This includes gastric banding, sleeve gastrectomy, gastric bypass and duodenal switch operation as well as revisional surgery.

He is also a GESA accredited endoscopist and performs gastroscopy and colonoscopies. He also deals with most General Surgical conditions like hernia, gallbladder disease and bowel conditions.

With more than 15 years surgical experience, multinational training and having performed thousands of operations you can be assured that with Mr.Gounder you will be getting the best care and treatment in an honest and straightforward manner.

Professional Memberships

Frequently Asked Questions

How far in advance should I plan for surgery?
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This depends on your circumstances. As a general guide, if you have a specific timeframe in mind, such as school holidays or a planned event, it is worth contacting the clinic two to three months in advance. For those who want to plan carefully around life commitments, beginning the conversation twelve months ahead is also a reasonable approach for some patients.

Is loose skin something I should expect?
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Loose skin is a possibility following significant weight loss, and it is something the team addresses openly. Exercise, particularly resistance training, is an important part of managing this as part of your overall journey.

Will I regain weight after surgery?
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Weight regain can occur over time and is most commonly associated with returning to old habits such as increased snacking, higher liquid calorie intake, or reduced activity levels. This is why the program includes ongoing follow-up, dietary support, and exercise guidance well beyond the operation itself. The goal is to help you build sustainable habits that protect your results long term.

Can I use medication and have surgery?
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Yes. Surgery and medication are not mutually exclusive. In many circumstances they are used together, and your care plan will be designed around what is most appropriate for your individual situation.

What medications are available for weight management?
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Several medication options exist, including GLP-1 agonists such as Ozempic, Wegovy, and Saxenda; dual hormone therapies such as Mounjaro; and oral medications including Duromine and Orlistat. Medications are generally indicated for people with a BMI over 30, or a BMI over 27 with weight-related conditions such as Type 2 diabetes, fatty liver disease, or obstructive sleep apnoea. The right option depends on your health profile, goals, and what outcomes you are trying to achieve.

What type of exercise is best after bariatric surgery?
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Resistance training is the most important form of exercise for preserving muscle mass and bone density during weight loss. The recommended approach is two to three sessions per week, focusing on compound movements at moderate effort. In the first three weeks after surgery, activity is kept very gentle, such as walking and light movement. A structured exercise plan is introduced from around the six-week mark.

Will I need to see a psychologist?
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Psychological support is not compulsory. The team tailors each patient’s care to their individual needs. Some patients benefit from seeing a psychologist before surgery, others after, and some at both stages. This is discussed and assessed as part of your personalised care plan.

What are the three most important nutritional priorities after surgery?
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The three priorities after bariatric surgery are protein, fluids, and vitamins. Your dietitian will support you through each stage of your nutritional progression, from fluids through to purées, soft foods, and eventually regular textures.

Will I struggle to drink water after surgery?
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Difficulty with fluid intake is common in the early weeks following surgery and is a recognised part of the recovery process. The dietitian team will work with you to find alternatives that keep you adequately hydrated during this period.

What is the pre-operative diet and why is it necessary?
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Before surgery, patients follow a pre-operative diet using meal replacement products such as Optifast. The purpose is not primarily about weight loss. It is designed to reduce fat stored in the liver, which makes surgery safer and easier to perform. Your dietitian will guide you through this stage.

Is bariatric surgery safe?
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Bariatric surgery has a strong safety profile. Major complications occur in approximately 0.3% of cases, and the mortality risk is comparable to routine surgical procedures such as gallbladder surgery, at less than 0.04%.

How long will I be in hospital?
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Most patients spend one to two nights in the hospital, with a maximum of three nights in most cases.

What surgical options are available?
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Perth Weight Loss & Surgery offers several bariatric procedures, including sleeve gastrectomy, gastric bypass (Roux-en-Y), duodenal switch, and gastric band. The most appropriate option depends on your health profile, goals, and circumstances, and will be discussed in detail during your consultation with Dr Gounder.

How do I know if I qualify for bariatric surgery?
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Current guidelines recommend surgery for people with a BMI over 35, or a BMI over 30 with weight-related medical conditions such as Type 2 diabetes, high blood pressure, or sleep apnoea. Surgery may also be considered for individuals with a BMI between 30 and 34.9 who have not achieved meaningful or lasting results through non-surgical approaches. For people of Asian background, lower BMI thresholds apply. The best way to understand your eligibility is to book a consultation with Dr Gounder, who will assess your individual situation.

How does medication compare to surgery?
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Both medication and bariatric surgery can be effective treatments. The right option depends on your health history, goals, and medical needs, which is why professional guidance is important.

How quickly will I start seeing results with weight loss medication?
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Some people may begin to notice changes within the first few weeks of starting weight loss medication. However, meaningful and sustained weight loss usually develops gradually over several months as the medication works alongside lifestyle changes and medical support.

How much weight can I realistically lose with GLP-1 injections?
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Many patients may lose around 10–15% of their body weight over time when using GLP-1 medications. Results can vary depending on the type of medication, dosage, lifestyle changes and individual health factors.

For the best outcomes, these medications are usually combined with nutritional guidance, physical activity and medical supervision to support sustainable weight management.

Is obesity a choice or a disease?
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Obesity is recognised as a complex medical condition, not simply a lifestyle choice. While food intake and physical activity play a role, research shows many other factors influence body weight, including genetics, hormones, metabolism, stress and the modern food environment.

In Australia, around 60% of adults live with overweight or obesity, which highlights how widespread and complex this health condition is. Because of this, managing weight often requires more than dieting or exercising more. Medical guidance and the right support can help people find a safe and sustainable pathway for their health.

 

Does superannuation cover bariatric surgery?
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You can apply to your super fund with support from your GP and us to cover the out of pocket fees. Weight loss surgery is usually considered and approved by the super fund as it is an important treatment for obesity. Find out more information here.

Do I need private health insurance?
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  • For private bariatric surgery it is important to have private health insurance that covers obesity surgery.
  • There will be out of pocket costs or gap charges depending on health fund and type of surgery.
What are the risks of weight loss surgery?
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  • All major surgery comes with risks, and the risks are different for each patient. During your first appointment, your surgeon will explain your individual risk level.

  • Overall the major morbidity risks are under 5%
  • Mortality is under 0.5%
What and how much can I eat after surgery?
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  • Depending on the type of surgery the quality of eating varies. With the gastric band there is much more restriction on type of food. With the sleeve gastrectomy and gastric bypass you will be able to eat most types of food albeit in smaller quantity.
  • As you will only be able to eat small quantity of food. Usually an entre size meal will be your main. It is advised that you concentrate mainly on protein intake and daily vitamin supplements.
How long does it take to return to work after surgery?
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Recovery timelines vary depending on your role. People in office-based jobs can typically return to work within ten days. Those in physically demanding roles, such as mine site work, are generally advised to wait around three weeks before returning.

What about pregnancy and weight loss surgery?
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  • Fertility increases after surgery. Birth control pills are not very reliable during the time your weight is changing. For this reason, having an IUD or using condoms and spermicide with ALL intercourse is recommended.
  • Most groups recommend waiting 12-18 months after surgery before getting pregnant.
  • Babies born to mothers who have had weight loss surgery have been shown to be slightly smaller in size for gestational age. The good news is that, after surgery, there is much less risk of experiencing problems during pregnancy (gestational diabetes, eclampsia, macrosomia) and during childbirth. There are also fewer miscarriages and stillbirths than in overweight women who have not had surgery and undergone weight loss.
  • Children born after mother’s surgery are less at risk of being affected by obesity later, due to activation of certain genes during fetal growth There is also less risk of needing a C section during pregnancy.

For More info see this article on fertility & weight loss surgery

When and why should I consider weight loss surgery?
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  • Surgery is the best long-term treatment for obesity. Its recommended for patients with BMI of more than 40 or more than 35 with comorbidities such as diabetes, high cholesterol and sleep apnoea. It can be also considered for lower BMI with severe diabetes. Patients can expect long term excess weight loss of between 50 to 90% based on type of surgery and compliance.
  • Obesity is a disease and large population based studies have shown that it leads to a myriad of problems like diabetes, increased cancer risk, heart disease, sleep apnoea, arthritis and many others. The chances of losing and maintaining a health weight by diet and exercise is 1 in 1,290 for men and 1 in 677 for women with severe obesity.
Which is the best weight loss surgery option?
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There is no one best surgery. The best operation is determined based on multiple factors and is individualised. After the initial consult and assessing your health and risk factors an appropriate surgery will be determined.

Is the surgery painful?
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Surgery is done with laparoscopic or key hole technique. The largest cut is usually only 15mm in size. Most patients have very tolerable pain that is well managed with analgesics.

Why do I eat when I’m not hungry?
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In some cases, eating can be influenced by emotions, routine, or environment, not just physical hunger.

Is emotional eating bad?
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It’s not about being ‘good’ or ‘bad’. It’s about understanding what’s driving the behaviour.

Why is it hard to stay consistent?
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Because behaviour is influenced by many factors, including habits, stress, and daily routines.

Can weight loss help with diabetes?
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Weight can influence how the body regulates blood sugar, and in some cases, improvements in metabolic health may support better control. However, outcomes vary from person to person.

Is diabetes reversible?
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In some cases, people may experience significant improvement, but this depends on many factors. It’s best understood as managing and improving metabolic health over time.

Why is it so hard to manage weight with diabetes?
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Because hormones, metabolism, and insulin resistance can all influence how the body stores and uses energy.

DO I QUALIFY?