"Obesity Surgery" (Gastric Bypass Surgery)

The Bariatric Team is involved in the surgical, emotional, diatetic and physiotherapy level of the assessment and support to morbid obese patients going through a process called Bariatric Surgery (Weigh-loss surgery / Gastric Bypass Surgery).

Prof Heine van der Walt - Laparoscopic Surgeon

Head of the Bariatric team (UNITAS Hospital, Centurion, South Africa)


  • M.B.,ChB.
  • M.Med. (Surg)(Pret)(SA) cum laude
  • F.C.S. (SA)

Fields of expertise:

  • Specialist surgeon

Fields of special interest:


  • Laparoscopic surgery
  • Bariatric surgery
  • Esophageal surgery
  • Upper GI surgery
  • Hernia surgery


Prof Heine van der Walt is a surgeon in Private Practice at Unitas Hospital, Centurion. He has a special interest in laparoscopic surgery. He has been the invited speaker at numerous international and local congresses and has also conducted many workshops in laparoscopic surgery, training surgeons worldwide in advanced laparoscopic surgery techniques. Internationally he is acknowledged as a leading laparoscopic surgeon. Prof van der Walt is a consultant at the Department of Surgery, University of Pretoria.


Member of South African Society for Endoscopic Surgeons; Association of Surgeons of South Africa; European Institute of TeleSurgery; International Society for Diseases of the Esophagus. OESO (World Organization for Specialized Studies on Diseases of the Esophagus)

Contact Information: For appointments or enquiries: 012- 6648046. For more information on Prof Heine van der Walt’s Bariatric Program follow the

 link: http://www.gastricbypasssurgery.co.za

Other associated members of the Bariatric Team, led by Prof Heine van der Walt (Bariatric Surgeon):

Hanlie Sweers - Dietician

Hanlie Sweers completed her Bachelor of Science (dietetics) Degree at the University of North- West and has more than 16 years extensive dietetic experience.


She started as junior dietitian at Flora Clinic where she was responsible for food service operations and quality control.


She subsequently worked as a private and hospital dietitian at the Curamed Hospital Group (Meulmed Hospital, Medforum Hospital, The Heart Hospital and Astrid Clinic) in partnership with four other dietitians. This gave her access to a wide range of medical conditions ranging from general surgery, kidney disease, cardiovascular disease, diabetes mellitus, weight loss management, pediatric nutrition, gastrointestinal disorders and oncology that was instrumental in her gaining invaluable work experience in how to manage these various conditions through nutrition.


In 2001 she moved her practice to Unitas hospital, where she currently works as part of Prof Heine van der Walt’s Bariatric team.


Hanlie has extensive clinical experience in weight management, medical nutritional therapy for obesity related health problems and gastrointestinal conditions, bariatric surgery and gastrointestinal surgery.


Hanlie provides specialized pre- and postoperative dietetic advice and guidance for individuals undergoing bariatric surgery.


Critical instructions and support are provided to help patients adhere to the dietary changes consistent with bariatric surgery.


Patients are empowered by providing them with the knowledge to self-manage their diets and to make practical, successful and sustainable dietary changes.


She supports her patients and thrives on the success of them achieving their personal goals.


Hanlie Sweers can be contacted on: 012-6648046 or email: jcsweers@gmail.com

Lania Alberts - Physiotherapist


Lania Alberts completed her Bachelor of Physiotherapy degree at the University of Pretoria and has over 16 years extensive Physiotherapy experience.


She worked as a junior physiotherapist in and around Pretoria where she gathered as much practical experience as possible in different hospitals and outpatient practices. She then went on to work in the UK as a physiotherapist and enjoyed the experience and challenges of working in another country under different circumstances. It is here where she realised that a multidisciplinary approach, better communication and teamwork between different medical and paramedical entities, proved to be to the benefit of the patient.


On her return to South Africa she started a practice in Pretoria. Two years later she subsequently started a practice in another part of Pretoria and employed physiotherapists.

In 2007 she started working as physiotherapist on Prof Heine van der Walt’s Bariatric team.


She has gained extensive experience in the treatment of pre- and post-operative lungs. Thereby eliminating/reducing lung complications and post-operative anesthetic problems.


She also fully comprehends the complications that can arise from immobility so it is her priority to prevent any form of circulatory problems by encouraging mobilization and activity.


During the hospitalization, clinical instructions and support are provided on moving and handling. By the time the patients are discharged they are empowered by providing them with the knowledge to reach and maintain optimal functionality and fitness.


Lania can be contacted on: 084 3373 410 or email: alberts.lania@gmail.com