Questions to Ask a Bariatric Surgeon
For anyone preparing for a consultation about weight loss surgery, whether you are seeing a gastric bypass surgeon, a sleeve surgeon or one who offers both. The 53 questions follow the appointment: which operation and why, a group each on the gastric sleeve and the gastric bypass, the surgeon's own record and the risks, what has to happen before a date is set (insurer approval and cost included), and life afterwards. If only one operation is on the table for you, skip the group on the other.
The questions
Each question, and why to ask it
Which operation
Given my history and my other health conditions, which operation would you recommend, and which would you rule out for me?
Why ask it
The exclusions matter as much as the recommendation. Reflux, diabetes, previous abdominal surgery and the medications you take all push the decision one way or another, and a surgeon who explains what they are ruling out is describing a considered plan rather than a default.
Do you perform both the gastric sleeve and the gastric bypass yourself, and how does your caseload split between them?
Why ask it
A surgeon who does one of the two almost exclusively may be recommending what they do most. If the split is very uneven, ask whether they would refer you to a colleague when the other operation fits better, and how often that has happened.
If my main goal is getting my type 2 diabetes under control, does that change which operation you would choose?
Why ask it
Tell them how long you have had it, what you take for it and your most recent blood sugar result, because the answer depends on those. Ask what they mean by improvement, fewer medicines or none at all, and how long they have seen it hold in their own patients after each procedure.
Will this make my reflux better or worse?
Why ask it
Many surgeons steer people with troublesome reflux away from a sleeve and towards a bypass, though practice differs, so find out which way this one leans and why. Heartburn and a daily acid tablet are easy to leave off a form, and either can change the recommendation.
What would you expect surgery to do for me that a weight loss injection would not, and can the two be used together?
Why ask it
Bring the name and dose of anything you have tried and what happened to your weight on it. Surgeons differ on whether these drugs come before, after or instead of an operation, and how they are paid for varies by country and insurer, so ask how it works where you are.
Are there procedures other than the sleeve and the bypass that you offer, and why not one of those for me?
Why ask it
Depending on the centre, the list might include a one-anastomosis bypass, a SADI, a balloon or an endoscopic sleeve, and some places have stopped offering the band. The reasons a surgeon gives for leaving an option out show how they are thinking about your case.
Is there anything about my health or my circumstances that would make you advise against surgery for now?
Why ask it
A surgeon who can name what makes them wait has criteria, whether that is smoking, an eating problem that needs treating first, or a heart or lung condition. If the impression is that nearly everyone who asks goes ahead, weigh that alongside how the clinic is paid.
Gastric sleeve
How much of my stomach does a sleeve remove, and is there any way back from it?
Why ask it
The part that is cut away leaves the body, so a sleeve can be converted to another operation later but not undone. Have the surgeon sketch what remains and say roughly how much it holds, which makes the portion sizes afterwards easier to picture.
How do you decide how narrow to make the sleeve, and how do you check the staple line before you finish?
Why ask it
You are not there to judge the technique. What you are listening for is a routine the surgeon can describe without hesitation: the sizing tube they work around, whether they reinforce or test the staple line, and why they do it that way.
Will you look for a hiatal hernia, and would you repair it during the sleeve operation?
Why ask it
A hernia at the top of the stomach is sometimes found only on an endoscopy or once the surgeon is inside. Three things follow from that: whether you will have a camera test first, whether a repair is on the consent form, and what it would change about reflux afterwards.
How many of your sleeve patients end up on acid medication long term, or need converting to a bypass?
Why ask it
Of everything to ask a sleeve surgeon, this is the one a brochure cannot answer. Someone who follows their patients will have a rough proportion, and a point at which they stop adjusting tablets and start talking about a second operation.
What would a narrowing or a twist in the sleeve feel like, and how would you treat it?
Why ask it
Swallowing that gets harder over the weeks instead of easier, or vomiting that does not settle, is the pattern to have described to you. It also helps to know whether the first treatment here is a stretch through an endoscope, who does it, and how quickly you would be seen.
Do you ever plan a sleeve as the first of two operations, and would that apply to me?
Why ask it
Some surgeons stage the treatment for patients at a higher weight or a higher anaesthetic risk: a sleeve first, and a bypass-type procedure later if it is needed. If that is the plan, find out what decides whether you have the second stage and whether it needs separate approval and payment.
Does a sleeve change how I absorb vitamins and tablets, or mainly how much I can eat?
Why ask it
The intestine is not rerouted in a sleeve, yet programmes still prescribe vitamins and blood tests after one. Have this surgeon explain why, which deficiencies turn up in their sleeve patients, and whether any of your tablets need to be crushed or swapped for a liquid in the early weeks.
Gastric bypass
Which kind of bypass are you proposing, a Roux-en-Y or a one-anastomosis bypass, and why that one?
Why ask it
The two share a name and differ in how many joins are made and how the intestine is arranged. Write down the exact term, because it is what an emergency doctor will want from you years from now, and ask what this surgeon sees as the trade-off between them.
How much of my intestine would you bypass, and what does that length change for me?
Why ask it
Surgeons choose these lengths differently, and the choice is tied to how much food is absorbed and sometimes to bowel habit. A plain explanation of why they use the measurement they do is enough. You are checking that it was a decision.
What happens to the part of my stomach that is bypassed, and how could it be examined in future?
Why ask it
It stays in place and keeps its blood supply, but an ordinary endoscope no longer reaches it by the usual route. Mention any family history of stomach ulcers or stomach cancer, and hear how that part would be investigated if it ever had to be.
Do you close the gaps that can lead to an internal hernia, and what would one feel like years from now?
Why ask it
An internal hernia can appear long after the clinic visits have ended, which is why the description matters more than the name. Get the surgeon's wording for the pain that should send you to hospital the same day, and ask for it to be written on your discharge summary.
How common is dumping syndrome in your bypass patients, and what sets it off?
Why ask it
Ask which foods and drinks bring it on, how soon after eating it starts, and about the later form in which blood sugar drops an hour or more after a meal. Patients describe it very differently, from a useful warning to something that stops them eating away from home, so ask how this surgeon's patients manage.
What is my risk of an ulcer at the join, and what would I have to avoid to keep it low?
Why ask it
Smoking and anti-inflammatory painkillers are the two things surgeons usually name. The details that matter day to day are whether you would be given an acid-reducing medicine afterwards, for how long, and what you would be allowed to take for a headache or a bad back from then on.
Will alcohol affect me differently after a bypass?
Why ask it
Many teams warn that it is felt faster and at smaller amounts once the stomach is bypassed. If you drink regularly, say how much without rounding down, and ask what the programme advises about driving and about the first year in particular.
Can a gastric bypass be reversed or revised, and have you done either?
Why ask it
Possible and commonly done are different things, and reversal belongs with the first. Ask in what circumstances this surgeon has taken a bypass down or altered one and what the patient went through, so that you make the decision as a lasting one.
Record and risks
How many of these operations do you do in a year, and how long have you been doing them?
Why ask it
Ask for the number for the specific procedure you are being offered, sleeve or bypass, and not for bariatric surgery in general. A surgeon who does them every week can usually answer from memory, and experienced ones are asked this often enough not to mind.
Is this centre accredited for bariatric surgery, and how many cases does it handle?
Why ask it
A good deal of what keeps a patient safe belongs to the unit and not to one person: nurses used to these operations, beds and scanners that take a larger patient, endoscopy on hand at short notice. Accreditation schemes differ by country, so get the name of the body that awarded it and the date of the last review.
What are your own rates of leak, bleeding, reoperation and readmission, and how do they compare with national figures?
Why ask it
Surgeons who audit their results can usually give you numbers or send them to you. A refusal, or a shift to national averages only, is worth noting. Ask for the figures to be written down so you can compare them with a second opinion.
Are your results sent to a national registry or audited by anyone outside the hospital, and can I see them?
Why ask it
Whether a registry exists, and whether it reports by surgeon or by hospital, depends on the country. Where there is none, ask how the unit reviews its own complications and how often those meetings happen.
For someone with my health profile, what is the risk of a serious complication, and what is the risk of dying?
Why ask it
Ask plainly and ask for it as a number rather than a reassurance. The risk depends on your weight, your age, your other conditions and the operation, so a personalised answer is the point; a general statement that the surgery is very safe is not an answer to the question you asked.
Will you perform the whole operation yourself, and who will be assisting?
Why ask it
In a teaching hospital a trainee may do part of it under supervision, and in some private hospitals a second consultant assists. Neither is a problem in itself. You are asking so that the name on the consent form matches the person you spent the appointment with.
How often do you have to change from keyhole to open surgery, and what would make that more likely for me?
Why ask it
Scar tissue from earlier abdominal surgery and an enlarged liver are the reasons usually given. An open operation means a different wound and a different recovery, so ask how many extra days in hospital and weeks off work it would add.
What will be done to prevent blood clots, and what will I be expected to do myself?
Why ask it
Expect to hear some mix of early walking, stockings or leg pumps and blood-thinning injections, sometimes carried on at home. Mention any clot you or a close relative has had, any hormone treatment, and any long journey planned for the weeks afterwards.
If something goes wrong in the first 48 hours, who is responsible for me?
Why ask it
You want to know whether your surgeon is contacted, whether they operate again themselves, and who covers nights and weekends. The follow-up is practical: which readings make the ward nurses call a doctor, and how fast a scan or a return to theatre can be arranged at three in the morning.
If I have a problem at home in week three, where do I go, and will you be involved?
Why ask it
Local emergency departments are not always familiar with bariatric anatomy, and this is the practical gap that catches people out. Ask for a number to call, a written summary of your operation to carry, and whether they would take you back directly.
In your practice, how much weight do people lose by the end of the first year, and where are they at five years?
Why ask it
The five-year figure is the honest one, and much less often quoted. Ask what proportion of patients are still being followed at that point, because averages calculated only from people who kept attending will look better than the reality.
Getting ready
What do I have to complete before you would operate, and how long does that usually take?
Why ask it
Dietitian sessions, a psychological assessment and sometimes a set number of months of supervised weight management come before a date is offered. Get the usual length of the whole path at this clinic and the step that most often holds people up, so you can plan rather than wait.
Who else is on the team, and is their care included?
Why ask it
The dietitian, the psychologist and the specialist nurse are the people you will see far more often than the surgeon. Ask to meet at least one of them before you decide, how many sessions with each are in the price, and whether you keep the same dietitian from start to finish.
Which tests do you want before surgery, and could any result change the operation you do?
Why ask it
An endoscopy, a sleep study, blood tests and sometimes a heart check are common requests, and each can take weeks to book. The second half of the question is the important one: ask which finding would move you from a sleeve to a bypass, or the other way round.
Do you ask for a liver-shrinking diet beforehand, for how long, and what if I cannot keep to it?
Why ask it
Teams set this differently, from a fortnight of meal replacements to a longer plan built on ordinary food. At some centres the operation is stopped and rebooked when the liver is still too large on the day, so find out what this surgeon does.
What are your rules on smoking, vaping and nicotine, before the operation and after it?
Why ask it
Some programmes test for nicotine and cancel on a positive result, patches and gum included. Find out exactly what is tested, how many weeks clear you need to be, and what help with stopping the hospital can arrange.
Which of my medicines do I stop or change before the day, and who tells me when?
Why ask it
Blood thinners, diabetes drugs, weight loss injections and hormone treatments can each have a different stop date. Request the dates on one sheet of paper, and the name of the person to ring if the surgeon's instructions and the anaesthetist's do not match.
How many nights will I be in hospital, and what do you need to see before I go home?
Why ask it
The discharge criteria show what the ward is watching: fluids going down, pain managed by mouth, walking, and at some units a swallow test. If you live far away or on your own, say so now, since it can change the day you are sent home.
How long would I be off work, and when could I drive, lift and exercise again?
Why ask it
Get the ranges rather than the best case, and mention what your job actually involves. Someone doing physical work needs a different plan from someone at a desk, and this affects sick pay and childcare arrangements you need to make now.
What does my insurer or health service require before it will approve the operation, and who handles the paperwork?
Why ask it
The conditions differ by insurer, plan and country: a set weight or BMI, a documented period of supervised weight loss, letters from other doctors. Find out whether the surgeon's office submits the request, how long a decision usually takes there, and what happens after a refusal.
What is the total cost, and what is left out of that figure?
Why ask it
The gaps tend to be follow-up appointments, supplements, blood tests, treatment of a complication and any later surgery for excess skin. Have the quote itemised in writing, because those are the bills that arrive after the main one has been settled.
Life afterwards
What will I be eating six months from now, and what tends to become permanently difficult?
Why ask it
Push for detail: portion size, how long a meal takes, whether you drink with food, which textures cause trouble. None of this appears on a risk form, and the dietitian can usually talk you through a sample day for a sleeve or for a bypass.
Which supplements would I be on for life, and what happens if I stop taking them?
Why ask it
Programmes prescribe vitamins and minerals for life after most of these operations, on the grounds that a shortfall may take years to show. Get the list by name and dose, whether an ordinary multivitamin will do or the clinic expects a specialist one, and what they have seen in patients who stopped.
Will I lose hair in the months after surgery, and is there anything that helps?
Why ask it
Teams commonly warn of shedding that starts a few months in and usually describe it as temporary. It is worth hearing what this programme advises on protein while it lasts, and at what point they would want a blood test to look for another cause.
After the operation, which of my regular medicines are likely to change, and who adjusts them?
Why ask it
Doses for diabetes and blood pressure are often cut back quickly as the weight comes off, and a slow-release tablet may need swapping for another form. Establish whether the surgical team or your own doctor makes those changes, and who to call if a reading at home looks too low in the first weeks.
How often will I be seen in the first year, and who follows me up after that?
Why ask it
Get the schedule as months or dates, and ask who takes over when the surgical team discharges you: the clinic, your own doctor, or nobody unless you ask. That handover is the point at which blood tests can stop being ordered.
If I want to become pregnant, how long do you ask patients to wait, and who would look after the pregnancy?
Why ask it
Programmes set their own waiting period, tied to the months of fastest weight loss, so get this one's figure and the reasoning behind it. Raise contraception as well, since the method you use now may not be considered as reliable after the operation you are having.
Who can I turn to if my mood, my eating or my drinking becomes a problem after the operation?
Why ask it
The psychological assessment before surgery is often the only appointment of its kind built into the programme. Ask whether you can refer yourself back, whether there is a patient group, and what it costs once the package of care has run out.
How many of your patients regain a significant amount, and what happens then?
Why ask it
Surgeons generally expect some weight to come back after the lowest point, and it is better discussed now than treated as a personal failure later. Hear what the route back into the clinic is, whether dietitian, medication or a second operation, and how many revisions this surgeon does in a year, since they are usually described as harder than a first procedure.
When does loose skin become something you would treat, and who does that surgery?
Why ask it
Surgeons generally want weight to have been steady for a good while before any skin is removed, and it is a separate operation, usually with a separate surgeon. Whether it is ever funded differs by country and insurer, so ask what the rule is where you live and what evidence is asked for.
What do your patients most often say they wish they had known beforehand?
Why ask it
Save this for the end, when the forms are finished and the surgeon is talking instead of presenting. The answer is rarely about the operation itself, and if the clinic runs a patient group, put the same question to someone a year or two on.
Preparing for the consultation
Practical guidance for the conversation itself
Before the appointment
Bring your records and your medication list
Weight history, previous attempts, existing diagnoses, past operations and every tablet you take including supplements. Recommendations change with these details, and the appointment is more useful if the surgeon has them in front of them.
Write your questions down and take someone with you
These consultations cover a lot in a short time. A second person hears what you miss, and a written list means the difficult questions about risk and cost do not get left until you are in the corridor.
Decide what you most need to know
If your main concern is your diabetes, or your reflux, or getting back to a physical job, say so at the start. It changes which operation is appropriate and what the surgeon will emphasise.
If a sleeve or a gastric bypass has already been named
Go to the matching group first. The questions to ask about a sleeve cover what is removed, reflux, narrowing and whether a second stage is planned; the ones for a gastric bypass surgeon cover the type of bypass, the join, dumping and internal hernias. If both operations are still possible, put the same question to the surgeon about each and write the two answers side by side.
During the consultation
Ask for numbers, and for them in writing
Complication rates, expected weight loss, how long the pre-operative programme takes, total cost. Written figures can be compared with a second opinion and reread when you are not sitting in a clinic room.
Say what you are worried about, including the things that feel awkward
Alcohol, previous eating difficulties, low mood, whether you live alone, whether you can afford time off. These affect the plan and are better raised now than discovered in the recovery period.
Ask what the alternative is
Ask what would happen if you did not have surgery, and what non-surgical options, including medication, they would consider for someone in your position. A surgeon who discusses these openly is giving you a fuller basis for a decision.
Take the time you need
This is an elective operation with permanent effects. Nothing has to be signed at the first appointment, and asking for a second consultation, or a second opinion, is ordinary practice rather than a sign of doubt.
Things people wish they had checked
Who provides long-term follow-up
The operation is a day or two; the aftercare runs for years. Ask what happens at year two and year five, who orders the blood tests, and what it costs once the initial package ends.
Arrangements if you travel for surgery
If the operation is far from home or in another country, establish in advance who treats a complication when you are back, who holds your records, and what happens if you need readmission within a fortnight.
Support at home for the first fortnight
Lifting, cooking, driving and childcare are all affected. Settle who helps and what food is in the house when the date is set, not in the week before.
The emotional side of a rapid change
Rapid weight loss changes how people treat you and can unsettle relationships and habits you relied on. Ask what psychological support is available afterwards, not only during the assessment before surgery.