guarantee
Gastric Sleeve and Bypass in Yokohama
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
from excess weight
rating
Gastric Sleeve and Bypass in Yokohama
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
Hidden fees? None. Surprises? None. One package, full route.
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
You may need a surgical consultation because of related conditions, not only high BMI
Medical history
Excess weight since childhood or a genetic predisposition
Metabolic disorders
Type 2 diabetes and hypertension associated with obesity
Resistance to conservative treatment
Years of diets and medication without any lasting result.
Medical history
Excess weight since childhood or a genetic predisposition
Metabolic disorders
Type 2 diabetes and hypertension associated with obesity
Resistance to conservative treatment
Years of diets and medication without any lasting result.
When is bariatric surgery justified?
Surgery is prescribed only when clear criteria are met
The role of body mass index (BMI)
The degree of obesity is mainly assessed with BMI: body weight (kg) divided by height squared (m²). As a rule, surgery is justified when BMI exceeds 40, or exceeds 35 alongside serious related conditions. In some cases lower values may also qualify for surgery if non-surgical approaches have failed.
Key factors
- The patient's body mass index (BMI)
- Overall health and any related chronic conditions
- Standard approaches to weight loss have not worked before
Why don't diets and exercise work for everyone?
People often spend years on diets and physical activity, but the body counters: metabolism slows, appetite increases, lost weight creeps back. When it is plain that changing the diet and taking medication cannot fundamentally improve things alone, bariatric surgery is the only effective exit.
Key factors
- The patient's body mass index (BMI)
- Overall health and any related chronic conditions
- Standard approaches to weight loss have not worked before
The role of body mass index (BMI)
The degree of obesity is mainly assessed with BMI: body weight (kg) divided by height squared (m²). As a rule, surgery is justified when BMI exceeds 40, or exceeds 35 alongside serious related conditions. In some cases lower values may also qualify for surgery if non-surgical approaches have failed.
Why don't diets and exercise work for everyone?
People often spend years on diets and physical activity, but the body counters: metabolism slows, appetite increases, lost weight creeps back. When it is plain that changing the diet and taking medication cannot fundamentally improve things alone, bariatric surgery is the only effective exit.
Medical indications
for bariatric surgery
Please check with a clinic doctor if you live with 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 surgeon takes out most of the stomach and shapes the rest into a narrow tube. Portion size shrinks sharply and ghrelin, the hunger hormone, drops, so fullness comes much faster and the patient eats less.
Effectiveness: works for a BMI from 35 to 45. On average, 60–70% of the excess weight is lost.
Specifics: durability is lower than with bypass operations. If the diet slips, especially with high-calorie drinks and liquid food, lost weight may come back.
Roux-en-Y gastric bypass
The surgeon shapes a small pouch, 50–70 ml, from the top of the stomach and routes it directly to the small intestine. Food intake drops and calorie absorption decreases as food covers a shorter distance in the gut.
Effectiveness: this operation is seen as the “gold standard” with a BMI above 45–50 and type 2 diabetes. Excess weight falls by up to 75–85%.
Specifics: outcomes are more durable than with other bariatric procedures. Diabetes, hypertension and other related conditions often go into remission. With the digestive anatomy changed, lifelong vitamin and mineral supplements are a must.
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: close to the classic Roux-en-Y bypass, with patients losing up to 75–80% of excess weight.
Specifics: surgery takes less time and recovery is faster. It can technically be reversed; the single anastomosis, though, poses a risk of bile reflux.
Single anastomosis duodeno-ileal bypass (SADI-S)
SADI-S is a contemporary combined technique uniting what is best in sleeve gastrectomy and intestinal bypass. Two stages are involved: first a narrow tube is formed from the stomach, then the small intestine is rerouted, leaving most of it outside active digestion.
Effectiveness: one of the most potent bariatric operations; excess weight loss hits 80–90% and the result is long-lasting.
Specifics: removal of the ghrelin-producing zone shrinks the stomach and appetite, and routing food past part of the intestine curbs calorie absorption. Appropriate for super obesity (BMI over 50), severe type 2 diabetes, or as a second stage after a sleeve that failed.
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
You begin with a surgeon's consultation, where history, method and recovery plan are covered
Lab tests
Complete blood count and urinalysis, biochemistry, HbA1c, coagulation panel (clotting test).
Instrumental diagnostics
Chest X-ray, ECG, kidney and abdomen ultrasound, Doppler for leg veins.
Endoscopy
Gastroscopy (required) and colonoscopy (if indicated).
Specialists
GP, endocrinologist, cardiologist, psychiatrist and gynecologist (women only).
Diet
2–4 weeks before surgery, cut fast carbs and fats; the day before, switch to light meals.
Lifestyle
In the month before, quit smoking, scale down physical activity and avoid stress.
The day before
Final light meal in the evening; last drinks 3–4 hours before surgery.
Lab tests
Complete blood count and urinalysis, biochemistry, HbA1c, coagulation panel (clotting test).
Instrumental diagnostics
Chest X-ray, ECG, kidney and abdomen ultrasound, Doppler for leg veins.
Endoscopy
Gastroscopy (required) and colonoscopy (if indicated).
Specialists
GP, endocrinologist, cardiologist, psychiatrist and gynecologist (women only).
Diet
2–4 weeks before surgery, cut fast carbs and fats; the day before, switch to light meals.
Lifestyle
In the month before, quit smoking, scale down physical activity and avoid stress.
The day before
Final light meal in the evening; last drinks 3–4 hours before surgery.
Our specialists
Experienced bariatric specialists who are committed to patients' health
Ruslan S. Menzulin
Bariatric surgeon · surgical oncologist
Completed training at Mercy clinic with Vadim Gushchin; presented at the World Congress of bariatric surgery (2025). Co-authored an international study in The Lancet.
Andrey G. Ugay
Lead bariatric surgeon · surgeon
Has done more SASJ operations than anyone else in the country. Sits on the expert council of the national Society of Bariatric Surgeons and regularly speaks at national and international congresses.
City Medical Centre bariatric surgery centre
— your path
to confidence and harmony
City Medical Centre approaches obesity in a comprehensive way. Each patient, after the first examination, is assigned a personal diagnostic program (lab and instrumental) to identify all disorders in the body.
A method matched to your goal
Our doctors decide on the surgical method case by case. Before choosing, they evaluate your health, weight history and related conditions in order to offer the surgical treatment that fits best.
Support that stays in touch
The City Medical Centre team keeps supporting you after the operation. All through the first year, specialists track how your weight drops, check your tests and handle every question on diet and recovery.
Fast recovery
Bariatric surgery at City Medical Centre is done laparoscopically, greatly shortening recovery. Most patients stand and walk on the first day and are back to normal life within a week.
Full diagnostics on site
No shuttling between clinics. Your full work-up happens at our centre, from our own lab to ultrasound and gastroscopy. Preparation is quick, there are no queues, and it is all in one building.
Recovery after bariatric surgery
The pace of recovery is largely personal, but minimally invasive laparoscopic techniques shorten rehabilitation as much as possible.
Duration
A clinic stay of 1 to 5 days under observation follows, depending on surgical extent and related conditions.
Activity
You are permitted to sit up, stand and drink fluids in the first hours after surgery.
Wound care
Absorbable sutures are used; they dissolve on their own.
Work
You can return to work 7–14 days after surgery, depending on how physical your job is.
Restrictions
For the first weeks, no bathhouse, sauna or intense physical exercise.
Diet
Doctors prescribe a staged diet for 1–2 months, from liquids through to solids, for the stomach to adapt.
Pace
Average monthly loss is 10% of excess weight for patients following the specialists' advice.
Stabilization
The final result is reached in 1.5–2 years. By then the patient has built stable eating habits that prevent the weight from returning.
Important! City Medical Centre specialists oversee recovery, offering psychological and medical support at every stage of weight loss.
Duration
A clinic stay of 1 to 5 days under observation follows, depending on surgical extent and related conditions.
Activity
You are permitted to sit up, stand and drink fluids in the first hours after surgery.
Wound care
Absorbable sutures are used; they dissolve on their own.
Work
You can return to work 7–14 days after surgery, depending on how physical your job is.
Restrictions
For the first weeks, no bathhouse, sauna or intense physical exercise.
Diet
Doctors prescribe a staged diet for 1–2 months, from liquids through to solids, for the stomach to adapt.
Pace
Average monthly loss is 10% of excess weight for patients following the specialists' advice.
Stabilization
The final result is reached in 1.5–2 years. By then the patient has built stable eating habits that prevent the weight from returning.
Important! City Medical Centre specialists oversee recovery, offering psychological and medical support 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?
Many people confuse them, but the goals are fundamentally different. Bariatric surgery is a medical way to treat obesity and related diseases. It changes how the digestive tract works, getting at the causes of excess weight and metabolism. Plastic surgery only reshapes the body's outer contours; it does not treat obesity or affect metabolism.
How soon can I return to work and normal life?
Will there be visible scars?
We use modern laparoscopic technique. The operation is done through 4 small punctures of 5 to 15 mm. Cosmetic sutures are placed, so once healed the marks become almost invisible.
What diet do I need to follow?
The diet shifts in stages — liquid, then soft, then solid food. Protein is the priority, while high-calorie, fatty food is limited.
What types of bariatric surgery are there?
Four main types of bariatric surgery are performed at City Medical Centre: sleeve gastrectomy, Roux-en-Y gastric bypass, mini gastric bypass (MGB) and SADI-S duodeno-ileal bypass. Each is selected individually based on BMI, related conditions and patient goals.
Can I plan a pregnancy after surgery?
Pregnancy is possible after bariatric surgery; doctors advise waiting no less than 12–18 months. This gives the body time to stabilize, for weight to reach target values and nutritional status to normalize.
Do I need to take vitamins after surgery?
Yes, taking vitamins after bariatric surgery is mandatory. Because digestion is anatomically altered, the body absorbs some nutrients poorly, so regular vitamin and mineral supplements stay in the patient's life permanently.
Can the weight come back?
It is possible to regain weight after bariatric surgery, but very unlikely if you follow your doctor's advice. Proper nutrition, avoiding high-calorie drinks and regular follow-up with City Medical Centre specialists are essential.
Prices
Send a request before month-end for a free consultation on any service
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Discounted price
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When bariatric surgery in Yokohama makes sense
Sleeve gastrectomy turns most of the stomach into a narrow tube, reducing portion size and levels of ghrelin, the hunger hormone. It suits a BMI of 35 to 45, with patients losing on average 60–70% of excess weight. For anyone from Yokohama with a higher BMI or type 2 diabetes, a bypass may fit better; the surgeon compares options at the consultation.
The work-up is done in one building with its own lab, ultrasound and gastroscopy, so preparation is quick and without queues. After laparoscopic surgery, the patient stays under observation for 1 to 5 days depending on the extent of the operation. Within the first hours you may sit up, stand and drink. Most Yokohama patients are up and moving on day one.
If you are comparing bariatric surgery options in Yokohama, look beyond the operation itself. Here the package bundles the work-up in the centre's own lab, laparoscopic surgery, the stay with meals and nursing, a doctor on hand 24/7 and a year of follow-up. Apply for a free surgeon consultation to see how this applies to your case.
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