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Bariatric Surgery in Lyon: Methods and Results
for good —
14,000 CMC patients already live in a transformed body. Your result is locked into an official contract — legally, beyond just words.
patients
experience
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Bariatric Surgery in Lyon: Methods and Results
for good —
Everything for the result — included
Bariatric surgery —
is it right for me?
Tick the situations that sound familiar.
From 2 matches — a reason to talk to a surgeon.
Everything needed for the result —
already included
No hidden extras. Nothing unexpected. One package, start to end.
Bariatric surgery —
is it right for me?
Tick the situations that sound familiar.
From 2 matches — a reason to talk to a surgeon.
Reasons to see a surgeon
A surgical consultation is warranted not only by a high BMI but also by related conditions
Medical history
Excess weight since childhood or a genetic predisposition
Metabolic disorders
Type 2 diabetes and hypertension associated with obesity
Resistance to conservative treatment
Over several years, diets and medication gave no result that lasted.
Medical history
Excess weight since childhood or a genetic predisposition
Metabolic disorders
Type 2 diabetes and hypertension associated with obesity
Resistance to conservative treatment
Over several years, diets and medication gave no result that lasted.
When is bariatric surgery justified?
Surgery is prescribed only when clear criteria are met
The role of body mass index (BMI)
Obesity is graded mainly by BMI, calculated as body weight (kg) over height squared (m²). A BMI above 40 usually justifies surgery, as does a BMI above 35 with serious related conditions. In certain cases surgery is considered at lower values too, if approaches without surgery have not succeeded.
Key factors
- The patient's body mass index (BMI)
- Overall health and any related chronic conditions
- Earlier attempts to lose weight by conventional means have failed
Why don't diets and exercise work for everyone?
Plenty of people diet and exercise for years, only for the body to resist: a slower metabolism, a bigger appetite and the weight coming back. When diet changes and medication clearly cannot fundamentally improve matters on their own, the only effective option left is bariatric surgery.
Key factors
- The patient's body mass index (BMI)
- Overall health and any related chronic conditions
- Earlier attempts to lose weight by conventional means have failed
The role of body mass index (BMI)
Obesity is graded mainly by BMI, calculated as body weight (kg) over height squared (m²). A BMI above 40 usually justifies surgery, as does a BMI above 35 with serious related conditions. In certain cases surgery is considered at lower values too, if approaches without surgery have not succeeded.
Why don't diets and exercise work for everyone?
Plenty of people diet and exercise for years, only for the body to resist: a slower metabolism, a bigger appetite and the weight coming back. When diet changes and medication clearly cannot fundamentally improve matters on their own, the only effective option left is bariatric surgery.
Medical indications
for bariatric surgery
Please speak with a clinic physician if you have chronic conditions!
Indications
Excess weight
Type 2 diabetes
Hypertension
Sleep apnea
Joint disease
Varicose veins
Fatty liver disease
Reproductive health problems
Contraindications
Age under 18
Malignant tumors
Less than six months since breastfeeding ended
Acute illness or flare-ups of chronic disease
Severe chronic and mental illness
Blood clotting disorders
Pregnancy
Bariatric surgery methods at City Medical Centre
Sleeve gastrectomy
The operation involves removing most of the stomach and turning it into a narrow tube. As a result portions shrink a lot and the hunger hormone ghrelin falls, so the patient reaches fullness sooner and eats less.
Effectiveness: the method is intended for a BMI of 35 to 45. Excess weight goes down by 60–70% on average.
Specifics: the result is not as long-lasting as with bypass surgery. Breaking the diet, particularly through high-calorie drinks and liquid food, can bring weight back.
Roux-en-Y gastric bypass
The surgeon forms a small 50–70 ml pouch at the top of the stomach and joins it straight to the small intestine. This restricts food intake and cuts calorie absorption by shortening the route food takes through the gut.
Effectiveness: the operation is considered the “gold standard” for a BMI over 45–50 with type 2 diabetes. Excess weight loss reaches 75–85%.
Specifics: the result is more durable than with other bariatric techniques. Diabetes, hypertension and similar related conditions often enter remission. The changed digestive anatomy means lifelong vitamin and mineral supplements.
Mini gastric bypass (MGB)
This is an improved version of the classic bypass. Unlike the standard method, the surgeon creates only one connection (anastomosis) between the small stomach and the small intestine. The simpler technique is easier on the patient and needs less recovery time.
Effectiveness: matches the classic Roux-en-Y bypass — patients' excess weight loss is up to 75–80%.
Specifics: shorter operating time and faster recovery. Though technically reversible, it carries a risk of bile reflux due to the single anastomosis.
Single anastomosis duodeno-ileal bypass (SADI-S)
A modern combined approach, SADI-S merges the benefits of sleeve gastrectomy with those of intestinal bypass. It takes two stages — turning the stomach into a narrow tube, then rerouting the small intestine so that the larger part is excluded from active digestion.
Effectiveness: one of the most effective bariatric operations — 80–90% of excess weight is lost, and the result lasts long.
Specifics: a smaller stomach curbs appetite because the ghrelin-producing zone is removed, and sending food past part of the intestine limits calorie absorption. It suits super obesity (BMI over 50), severe type 2 diabetes, or a second stage after a sleeve that did not work.
Book a consultation
Call or message us -
our coordinator will contact you shortly
and book your consultation
Book a consultation
Call or message us -
our coordinator will contact you shortly
and book your consultation
Preparing for bariatric surgery at City Medical Centre
The first step is a surgeon's consultation covering medical history, method selection and recovery plan
Lab tests
Tests: complete blood count, urinalysis, biochemistry, HbA1c, coagulation panel (clotting).
Instrumental diagnostics
Chest X-ray and ECG, abdominal and renal ultrasound, Doppler of leg veins.
Endoscopy
Gastroscopy (required) and colonoscopy (if indicated).
Specialists
GP, psychiatrist, endocrinologist, cardiologist; gynecologist for female patients.
Diet
2–4 weeks before the operation, limit fast carbs and fats; the day prior, eat only light meals.
Lifestyle
One month out, quit cigarettes, reduce physical exertion and avoid stress.
The day before
Evening: last light meal. Fluids: stop 3–4 hours before the operation.
Lab tests
Tests: complete blood count, urinalysis, biochemistry, HbA1c, coagulation panel (clotting).
Instrumental diagnostics
Chest X-ray and ECG, abdominal and renal ultrasound, Doppler of leg veins.
Endoscopy
Gastroscopy (required) and colonoscopy (if indicated).
Specialists
GP, psychiatrist, endocrinologist, cardiologist; gynecologist for female patients.
Diet
2–4 weeks before the operation, limit fast carbs and fats; the day prior, eat only light meals.
Lifestyle
One month out, quit cigarettes, reduce physical exertion and avoid stress.
The day before
Evening: last light meal. Fluids: stop 3–4 hours before the operation.
Our specialists
Our experienced bariatric surgeons care about every patient's health
Ruslan S. Menzulin
Bariatric surgeon · surgical oncologist
Took training at Mercy clinic under Vadim Gushchin and addressed the World Congress of bariatric surgery (2025). Co-author of an international study that The Lancet published.
Andrey G. Ugay
Lead bariatric surgeon · surgeon
Holds the country's record for the number of SASJ operations performed. Member of the expert council of the national Society of Bariatric Surgeons; a regular speaker at national and international congresses.
City Medical Centre bariatric surgery centre
— your path
to confidence and harmony
At City Medical Centre obesity is treated with a comprehensive approach. Once examined, each patient receives a personal lab and instrumental diagnostic program aimed at finding every disorder in the body.
A method matched to your goal
Choosing the surgical method is individual for each patient at our clinic. Doctors first review your health, history of weight and related conditions and then propose the most suitable surgical option.
Support that stays in touch
City Medical Centre's team remains with you after surgery. Over the first year specialists watch your weight loss, monitor test results and respond to all questions regarding diet and recovery.
Fast recovery
Bariatric operations at City Medical Centre are laparoscopic, which greatly shortens recovery. Most patients are up and moving on day one and return to normal life within a week.
Full diagnostics on site
Skip the trips between clinics. Our centre provides everything for your work-up, our own lab through ultrasound and gastroscopy. Prep is quick and free of queues, all in one building.
Recovery after bariatric surgery
Each patient recovers differently, but minimally invasive laparoscopic techniques keep rehabilitation as brief as possible.
Duration
Patients stay under observation at the clinic 1 to 5 days, depending on how extensive the surgery is and related conditions.
Activity
In the first hours post-op, sitting up, standing and drinking fluids are fine.
Wound care
Absorbable sutures are used; they dissolve on their own.
Work
7–14 days after surgery you can return to work, depending on how physical the job is.
Restrictions
The first weeks exclude bathhouse, sauna and intense physical exercise.
Diet
A staged diet is prescribed for 1–2 months — from liquids to solids to let the stomach adapt.
Pace
Following the specialists' advice, patients lose on average 10% of excess weight per month.
Stabilization
Full results are reached in 1.5–2 years. By then, stable eating habits are in place that prevent the weight from coming back.
Important! City Medical Centre specialists supervise your recovery and support you psychologically and medically at every stage of weight loss.
Duration
Patients stay under observation at the clinic 1 to 5 days, depending on how extensive the surgery is and related conditions.
Activity
In the first hours post-op, sitting up, standing and drinking fluids are fine.
Wound care
Absorbable sutures are used; they dissolve on their own.
Work
7–14 days after surgery you can return to work, depending on how physical the job is.
Restrictions
The first weeks exclude bathhouse, sauna and intense physical exercise.
Diet
A staged diet is prescribed for 1–2 months — from liquids to solids to let the stomach adapt.
Pace
Following the specialists' advice, patients lose on average 10% of excess weight per month.
Stabilization
Full results are reached in 1.5–2 years. By then, stable eating habits are in place that prevent the weight from coming back.
Important! City Medical Centre specialists supervise your recovery and support you psychologically and medically at every stage of weight loss.
Book a consultation
Call or message us -
our coordinator will contact you shortly
and book your consultation
Book a consultation
Call or message us -
our coordinator will contact you shortly
and book your consultation
Frequently asked questions
about bariatric surgery at CMC
Bariatric vs plastic surgery: what's the difference?
It is common to confuse them, but their goals are fundamentally different. Bariatric surgery treats obesity and related diseases medically. By changing how the digestive tract works, it addresses the causes of excess weight and metabolism. Plastic surgery shapes the body's outer contours; it does not treat obesity and has no effect on metabolism.
How soon can I return to work and normal life?
Will there be visible scars?
We work with modern laparoscopic technique. The operation needs only 4 small punctures, 5 to 15 mm each. Cosmetic sutures are applied, so healed marks are almost invisible.
What diet do I need to follow?
Eating changes gradually: liquid food first, then soft, then solid. The focus is protein, with high-calorie, fatty food kept to a minimum.
What types of bariatric surgery are there?
At City Medical Centre there are four main types of bariatric surgery — sleeve gastrectomy, Roux-en-Y gastric bypass, mini gastric bypass (MGB) and SADI-S duodeno-ileal bypass. Every method is chosen individually from BMI, related conditions and the patient's goals.
Can I plan a pregnancy after surgery?
Getting pregnant after bariatric surgery is possible, but doctors advise waiting at least 12–18 months, so the body can stabilize, weight can reach target values and nutritional status can normalize.
Do I need to take vitamins after surgery?
Yes, after bariatric surgery vitamins are a must. The altered digestive anatomy reduces absorption of some nutrients, which makes regular vitamin and mineral supplements a permanent part of the patient's life.
Can the weight come back?
Weight regain is possible after bariatric surgery but very unlikely provided you follow the doctor's advice. Eat properly, avoid high-calorie drinks and keep up regular follow-up with City Medical Centre specialists.
Prices
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About weight loss surgery for patients from Lyon
SADI-S combines a sleeve with intestinal bypass in two stages and is one of the most powerful bariatric operations, with 80–90% excess weight loss and a long-lasting result. It suits super obesity with a BMI over 50, severe type 2 diabetes, or a second stage after an ineffective sleeve. Anyone in Lyon in these situations can discuss it at a consultation.
Preparation is practical. Two to four weeks before surgery, cut fast carbohydrates and fats; a month before, quit smoking, reduce physical activity and avoid stress. The day before, switch to light meals, with the last light meal in the evening and last fluids 3–4 hours before the operation. The same plan applies to everyone preparing for bariatric surgery in Lyon.
Everything needed for the result is combined in one package, with no hidden fees and no surprises. For patients from Lyon, it includes surgery by a dedicated team, round-the-clock care in the ward with meals and nursing, a doctor nearby 24/7 and a personal coordinator. The first step is a free 15-minute consultation with a bariatric surgeon.
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