0800 84 84 777
Book a consultationBook a consultation
3,087 reviewsof the Weight Doctors® Group · 97% recommendation rate

Complaints after gastric bypass

Weight Doctors® REVISION Dumping syndrome

Weak spells, nausea or low blood sugar after eating can point to dumping syndrome after a gastric bypass. It can be treated – gently at first, with targeted correction if needed.

Book a consultationCosts
How your therapy is structured

Two building blocks.
One plan.

The Weight Doctors® MEMBERSHIP is the foundation of every therapy: medical oversight, progress monitoring and aftercare. The treatment you choose together with your specialist builds on it.

Building block 1

Weight Doctors® MEMBERSHIP

The foundation for every Weight Doctors® therapy – with the tools that support your treatment and record your progress for your medical consultations.

  • Weight Doctors® AppKeep an eye on weight, activity and sleep, for iOS and Android
  • Digital body scalesBluetooth scales – the readings flow straight into the app
  • 3D BodyscanMeasure body composition objectively, up to twice a year
  • Priority access to specialistsby phone, video or on site, without a long wait
  • 360 coaches and Weight Doctors® MiraNutrition and behaviour in everyday life, aftercare with your coaches
  • E-prescription servicePrescriptions issued digitally – after medical approval
More on the Membership
Building block 2

Weight Doctors® REVISION dumping syndrome

Weak spells, nausea or low blood sugar after eating can point to dumping syndrome after a gastric bypass. It can be treated – gently at first, with targeted correction if needed.

Procedure
Conservative, endoscopic or surgical
Duration
individual
Price
from €900
Costs

The Membership does not replace a medical decision: whether treatment makes sense, and which one, is decided by your specialist after a medical assessment.

In comparison

Treatment paths for dumping syndrome

Gently at first, with targeted correction if needed – always step by step. Which path is an option for you is decided by the diagnostics.

  • Adjusted eating habits

    Conservative and always the first step: meal structure, avoiding sugar. Often the symptoms improve with this alone.

  • Endoscopic reduction of the anastomosis

    If the connection between the gastric pouch and the small intestine is too wide, it is reduced from the inside so that the pouch empties more slowly – minimally invasive, without another open operation.

  • Minimally invasive revision techniques

    Where suitable, we use gentle procedures before a larger procedure becomes necessary.

  • Bypass revision

    Surgical adjustment of the anatomy or the loop lengths in order to slow emptying.

Personally here for youDr. med. Oliver Scheffel · Bariatric surgery

Your guide

Dumping syndrome after bypass at a glance

Where the symptoms come from, how we determine the form and which path makes eating easier for you again.

Early and late dumping: what happens after eating

In a gastric bypass, a small stomach pouch is connected directly to the small intestine; food therefore reaches the intestine more quickly than before. In some patients, this can cause dumping syndrome: circulatory and digestive complaints that affect eating and thus everyday life. It is a known accompanying effect and can be treated.

Whether early, late or mixed dumping is present determines the right treatment – that is why we first classify the form precisely:

Hands of the surgical team guiding the instruments through small access points in the abdominal wall
  • Early dumpingShortly after eating, triggered by emptying into the small intestine too quickly.
  • Late dumping1–3 hours after eating, triggered by reactive low blood sugar.
  • Mixed formsMany of those affected have elements of both. Even then, the treatment can be tailored specifically to this.
  • Sensitive sugar processingIn addition to the rapid passage through the stomach, sugar processing plays a role – after the bypass, the body reacts more sensitively to sugar and fast carbohydrates. This can be compensated for in a targeted way.

Advantages of Weight Doctors® REVISION

  • Specialised expertiseAn experienced team, specialised in obesity surgery and corrective procedures.
  • Surgical and endoscopicSurgical and endoscopic revision techniques under one roof – we choose what suits your situation.
  • Nationalklinik WertheimTreatment in our specialised centre for obesity surgery.
  • Individual treatment planningNo one-size-fits-all approach: your treatment path is tailored exactly to your situation.
  • Also after surgery at another clinicOur revision clinic is open to all patients – regardless of where your procedure took place.
  • Comprehensive aftercareWe also continue to support you after the revision – with our 360-degree care.

Typical symptoms of dumping syndrome

These complaints after a gastric bypass can point to dumping syndrome. You will find everything about the specialist clinic, further complaints after stomach surgery and aftercare under Weight Doctors® REVISION.

Weight Doctors® staff member on the telephone at initial contact
  • Early dumping (shortly after eating): nausea, racing heart, sweating, dizziness, abdominal cramps, diarrhoea
  • Late dumping (1–3 hours afterwards): low blood sugar, trembling, cravings, weakness, difficulty concentrating
  • Weak spells up to circulatory collapse
  • Complaints above all after sweet or carbohydrate-rich meals
  • Fear of eating – meals and social situations are avoided

“Nobody should avoid eating out of fear of the next weak spell. With dumping syndrome, there are clear causes – and effective ways to resolve them.”

Dr. med. Oliver Scheffel

Our approach – step by step

Clearly determining the form and cause – this is the basis of every treatment:

Doctor guiding the endoscope during an examination
  1. Initial contactIt begins with a detailed conversation – in person, by telephone or by video consultation.
  2. Detailed analysisWith a dumping score, we record your symptoms, your diet and your history in a structured way.
  3. Targeted diagnosticsA glucose tolerance test shows how your body reacts to sugar. An endoscopy shows how wide the connection between the gastric pouch and the small intestine (anastomosis) is.
  4. Clear identification of the causeFrom all of this together, we classify whether early, late or mixed dumping is present – and which path is the right one.
  5. Individual treatment strategyYour plan – from diet to correction of the anastomosis.

Gently at first: adjusting eating habits

Conservative therapy is always the first step – and often the symptoms already improve considerably with it. The focus is on a fixed meal structure and consciously avoiding sugar and fast carbohydrates, which with a bypass trigger symptoms particularly easily.

Our nutrition professionals support you with this in person and digitally, for example in Weight Doctors® 360° nutrition coaching. If the change is not enough, that is not a failure: there is then often an anatomical cause that can be corrected.

Two Weight Doctors® staff members with fresh fruit and vegetables

Endoscopically from the inside: reducing the connection

If the anastomosis is too wide, the gastric pouch empties too quickly. The connection can then be reduced again endoscopically – that is, through the mouth, from the inside – so that the pouch empties more slowly. This is minimally invasive and requires no further open operation.

Where it is suitable, we use such gentle revision techniques before a larger procedure becomes necessary. Which technique suits you is decided by the findings of the endoscopy.

Endoscopy team with endoscope and instrument

Bypass revision: when the anatomy needs to be adjusted

If the dumping cannot be sufficiently relieved with diet and endoscopic means, a surgical bypass revision may be an option. The anatomy is adjusted, for example the length of the small intestine loops, in order to slow emptying.

Surgical procedures take place at the Weight Doctors® Nationalklinik in Wertheim, carried out by specialists in obesity surgery and corrective procedures – surgical and endoscopic techniques under one roof.

Nurse preparing instruments for a procedure
  • GermanyNetherlandsDr. ScheffelSpecialist in general and bariatric surgery
  • GermanyPD Dr. WichmannSpecialist in visceral surgery & expert in endobariatrics
  • GermanyDr. JohnSpecialist in internal medicine & gastroenterology
  • GermanyM. Al RashdanSpecialist in internal medicine & gastroenterology

All specialists

What does the treatment cost – and what does the German health insurance pay?

The treatment is part of Weight Doctors® REVISION and is possible as a self-pay service from €900, also with payment in instalments.

If dumping syndrome is proven and conservative measures are not sufficient, there is a chance of cost coverage by your German statutory health insurance where the indication is in line with the guidelines. There is no prior application: before the procedure, we check all the requirements for you. You do not have to speak to your health insurer, and billing takes place directly afterwards. This is how the costs are divided:

What statutory health insurance pays*

  • Surgery by a specialist
  • Anaesthesia
  • Materials and medication in the clinic
  • Double room at the Nationalklinik
  • Informed consent discussion
  • Aftercare in the clinic
  • No follow-up cost insurance needed

* For patients with German statutory health insurance: if the medical indication is established in line with the DGAV guidelines, reimbursement may be possible.

What you pay privately

  • Private medical pre- and post-treatment examinations

MMK+ programme

multimodal programme including Weight Doctors® MEMBERSHIP all-in

  • App with Weight Doctors® Mira, body scales and 3D Bodyscan
  • Specialists around the clock
  • Personal coach
  • Telemedicine and e-prescription
  • Communication with the German health insurer
  • Free choice of clinic for preliminary examination and aftercare
Two paths to stomach reduction on German health insurance

Usual pathwith an advance application to the German health insurer

Weight Doctors®Without advance application

ConsultationInitial consultation and indication
MMKSix months of nutrition, exercise and psychology
ApplicationApplication for cost coverage with all documents to the German health insurer
Expert reportReview by the Medical Service
DecisionWaiting for the decision – appeal if rejected
SurgeryProcedure after approval
ConsultationWe check your medical indication: BMI, related conditions, previous attempts to lose weight.
MMKSix months of nutrition, exercise and psychology – we organise all the appointments. With a primary indication, it is not required.
Final checkBefore surgery, we check all the requirements for you. You do not have to speak to your German health insurer.No advance application
SurgeryYour procedure – billing with your German health insurer follows directly after surgery.

* For patients with German statutory health insurance: if the medical indication is established in line with the DGAV guidelines, reimbursement may be possible.

More on cost coverageAll prices

Paying in instalments: how it works

If you would like to spread the costs over a longer period, payment in instalments via our partner medipay is possible. You decide the instalment amount and term yourself; medipay reviews your application promptly. You submit the application together with us during your consultation, by phone or entirely paperless online – more under Pay in instalments.

The requirement is sufficient creditworthiness. In detail:

  • Main residence in Germany
  • no negative Schufa entries
  • employed or retired, with disposable income
  • Students, trainees and homemakers can enter a second person from the same household as the borrower – a parent, child, spouse or partner

Apply for instalmentsMore on instalments

Instagram · Dumping syndrome

Up close

Insights from the clinic, team and treatment – short and real, just like on our Instagram channel.

Follow @weight_doctors
Your specialists

In specialist hands.

39 doctors in Germany, Austria, the Netherlands, the United Kingdom and South Africa – at the Weight Doctors® Nationalklinik in Wertheim and at your location.

  • GermanyNetherlandsDr. ScheffelSpecialist in general and bariatric surgery
  • GermanyAustriaProf. MillerSpecialist in general and visceral surgery
  • GermanyPD Dr. WichmannSpecialist in visceral surgery & expert in endobariatrics
  • GermanyM. MargolinsSpecialist in general surgery
  • GermanyM. ShalabiSpecialist in general and visceral surgery
  • GermanyNetherlandsDr. JennerSpecialist in visceral surgery / specialised visceral surgery
  • GermanyDr. SchüderSpecialist in general, visceral and vascular surgery / specialist in specialised visceral surgery
  • GermanyA. SaberSpecialist in orthopaedics and trauma surgery
  • NetherlandsProf. GreveSpecialist in visceral and bariatric surgery
  • South AfricaDr. HanningtonSpecialist in surgery
  • South AfricaDr. MabeSpecialist in surgery
  • South AfricaDr. WolmaransSpecialist in surgery

All specialists

Frequently asked questions

Questions about Weight Doctors® REVISION dumping syndrome

Your question isn’t listed? Your specialist will take time for it during the consultation.

What is dumping syndrome?

A known accompanying effect after a gastric bypass: because food reaches the small intestine more quickly, circulatory and digestive complaints can occur after eating – from nausea and a racing heart to low blood sugar. It occurs in only some patients and can be treated.

What is the difference between early and late dumping?

Early dumping is caused by emptying into the small intestine too quickly and shows shortly after eating. Late dumping is based on reactive low blood sugar and comes 1–3 hours later. Many people have mixed forms.

After which meals do the symptoms occur?

Above all after sweet or carbohydrate-rich meals. After the bypass, the body reacts more sensitively to sugar and fast carbohydrates.

Is dumping syndrome dangerous?

The symptoms can range up to weak spells and circulatory collapse, and many people avoid meals or social situations out of fear. Have recurring symptoms checked rather than putting up with them.

Does dumping syndrome go away?

In many people it improves considerably with a targeted change in diet. If that is not enough, the anatomical causes – for example an anastomosis that is too wide – can be corrected endoscopically or surgically.

Can dumping be treated without an operation?

Often yes. The first step is always conservative therapy with a fixed meal structure and little sugar. If that does not help sufficiently, a gentle endoscopic reduction of the connection is often possible – without an open operation.

How is the anastomosis reduced?

If the connection between the gastric pouch and the small intestine is too wide, it is made narrower again from the inside, that is, endoscopically. This slows the emptying of the pouch and eases the dumping.

How is dumping syndrome diagnosed?

We record your symptoms, your diet and your history with a dumping score. In addition there are examinations such as a glucose tolerance test and an endoscopy, which shows the size of the anastomosis.

I was operated on at another clinic. Can I still come?

Yes, especially then. Our revision clinic is open to everyone – regardless of where your bypass was created.

Does the German health insurance cover the treatment?

In proven dumping that does not respond to therapy, and where the indication is in line with the guidelines, there is a chance of cost coverage. There is no prior application: before the procedure, we check all the requirements for you, and you do not have to speak to your German health insurer.

Can I pay for the treatment in instalments as a self-paying patient?

Yes, part payment is possible via our partner medipay. Prices for Weight Doctors® REVISION start at €900; more under Payment in instalments.

Where does the treatment take place?

The consultation is possible in person, by telephone or by video. Procedures take place at the Weight Doctors® Nationalklinik in Wertheim.

Why Weight Doctors®

Good reasons for Weight Doctors®.

Specialised in one thing: lasting weight loss – from medication to surgery, with specialists at your location and our own Nationalklinik.

  • 23Locations in 6 countries
  • 39specialists
  • 5×ProvenExpert Top Recommendation in a row
  • 9treatments from gentle to surgical
ProvenExpert Top Recommendation 2022ProvenExpert Top Recommendation 2023ProvenExpert Top Recommendation 2024ProvenExpert Top Recommendation 2025ProvenExpert Top Recommendation 2026

All 13 reasons

As seen on TV & in the media

  • BILD
  • DIE WELT
  • ARD
  • Galileo
  • ProSieben
  • WAZ
  • SWR
  • Frankfurter Allgemeine
  • Brigitte
  • Apotheken Umschau
  • Handelsblatt
  • Hamburger Abendblatt
  • Main-Echo
  • Berliner Morgenpost
  • Gala
  • Bild der Frau
  • FOCUS
  • sonnenklar.TV
  • Süddeutsche Zeitung
  • Bild der Frau Schlank & fit
  • Fränkische Nachrichten
  • Klassik Radio
  • Mannheimer Morgen
  • Radio Gong 96.3
  • Stuttgarter Zeitung
Other treatments

All paths.
From gentle to surgical.

Every method has its place. Here you can see at a glance how major the procedure is, how long it takes and what starting price you can expect.

Wide range of services
no procedure
Surgery
No procedure

Weight Doctors® GLP-⁠1 pharmacotherapy

Medication-based, no procedure

Medically supervised pharmacotherapy with regular progress monitoring – with no procedure at all.

Duration3–12 months
Pricefrom €599
No procedure

Weight Doctors® 360°

Nutrition coaching

Nutrition coaching and support in everyday life – in person, by video and in the app.

Durationper session
Pricefrom €65
Long-lastingNewAt the Weight Doctors® Nationalklinik

Weight Doctors® hydroGMA

Endoscopic, no incisions

Losing weight without medication: lowering the hunger hormone endoscopically – no surgery, no incisions. On its own or combined with an endo sleeve.

Durationapprox. 30 min
Priceon request
No surgery

Weight Doctors® GASTRIC BALLOON

Temporary, also swallowable

A temporary companion for 6 or 12 months – also swallowable, with no endoscopy at all.

Duration6 or 12 months
Pricefrom €3,490or from €50 a month*
No surgeryHealth insurance cover also possible*

Weight Doctors SLEEVE®

Endoscopic, permanent

Permanent stomach reduction without conventional surgery – endoscopic, outpatient, without scars.

Duration30–60 min
Pricefrom €5,500or from €199 a month*
With surgeryHealth insurance cover also possible*

Weight Doctors BARIATRICS®

Surgical, minimally invasive

Gastric bypass or gastric sleeve surgery for higher BMIs, incl. private medical preliminary examination and aftercare.

Duration1–3 nights
Pricefrom €2,500or from €278 a month*
You are hereWith surgeryHealth insurance cover also possible*

Weight Doctors® REVISION

Corrective procedure after weight-loss surgery

Corrective procedure when earlier weight-loss surgery has not brought the desired success.

Durationindividual
Pricefrom €900
LipoedemaHealth insurance cover also possible*

Weight Doctors® Lipoedema surgery

Liposuction for lipoedema

Specialised liposuction that specifically removes diseased fatty tissue in lipoedema and can relieve pain.

Duration1.5–3 hours
Pricefrom €950
After weight lossHealth insurance cover also possible*

Weight Doctors® RESHAPE

After weight loss

Post-bariatric body contouring after successful weight loss.

Durationindividual
Pricefrom €1,950

* For patients with German statutory health insurance: if the medical indication is established in line with the DGAV guidelines, reimbursement may be possible.

All treatments

Consultation

On to your Weight Doctors® Experience.

The first step is a conversation: choose your treatment, location and appointment online here – consultation on site, by video or by phone.

  • 100% no obligation
  • One-to-one with your specialist
  • Appointments online, around the clock
  • 23 locations in 6 countries
Find a location near you

Health insurance cover also possible*

Prefer to call? 0800 84 84 777Mon–Fri 8 am–8 pm · Sat 9 am–3 pm

* For patients with German statutory health insurance: if the medical indication is established in line with the DGAV guidelines, reimbursement may be possible.

Weight Doctors® at 23 locations in 6 countries23 locations

Which location is closest to you?

0800 84 84 777Book a consultationBook a consultation