14,000 CMC patients already live in a different body. The result is stated in an official contract — in law, not just in talk.
Obesity Surgery in Sheffield: Bariatric Methods
Tick the situations that sound familiar.
From 2 matches — a reason to talk to a surgeon.
No secret fees and no surprises — one package takes you all the way.
Tick the situations that sound familiar.
From 2 matches — a reason to talk to a surgeon.
It is not only a high BMI that justifies a surgical consult — related diseases do too
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.
Surgery is prescribed only when clear criteria are met
To gauge obesity, doctors rely primarily on BMI, which equals body weight (kg) divided by the square of height (m²). An operation is usually warranted with a BMI over 40, or over 35 with serious associated conditions. Occasionally surgery is weighed at lower values as well, once non-surgical options have failed.
Years of various diets and workouts often end the same way: the body fights back, metabolism slows, appetite grows and the weight returns. If it becomes clear that medication and dietary changes alone cannot fundamentally improve the situation, bariatric surgery is the only effective way forward.
Key factors
The role of body mass index (BMI)
To gauge obesity, doctors rely primarily on BMI, which equals body weight (kg) divided by the square of height (m²). An operation is usually warranted with a BMI over 40, or over 35 with serious associated conditions. Occasionally surgery is weighed at lower values as well, once non-surgical options have failed.
Why don't diets and exercise work for everyone?
Years of various diets and workouts often end the same way: the body fights back, metabolism slows, appetite grows and the weight returns. If it becomes clear that medication and dietary changes alone cannot fundamentally improve the situation, bariatric surgery is the only effective way forward.
Chronic conditions? Please seek a consultation with a clinic doctor!
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

Sleeve gastrectomy
During surgery the surgeon removes most of the stomach, turning it into a narrow tube. This greatly reduces portion size and lowers ghrelin, the hunger hormone, so the patient feels full much faster and eats less.
Effectiveness: this method is for a BMI of 35 to 45. Patients drop 60–70% of excess weight on average.
Specifics: results are less lasting than with bypass surgery. Weight can return if the diet is not kept, especially with high-calorie drinks and liquid foods.

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: results hold better than with other bariatric methods. Related conditions like diabetes and hypertension frequently go into remission. Since digestive anatomy is altered, vitamin and mineral supplements are needed for life.

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: like the classic Roux-en-Y bypass, it helps patients lose up to 75–80% of excess weight.
Specifics: brief surgery and rapid recovery. While technically reversible, the procedure has a bile reflux risk linked to the single anastomosis.

Single anastomosis duodeno-ileal bypass (SADI-S)
SADI-S, a modern combined technique, pairs the benefits of sleeve gastrectomy and intestinal bypass. It is carried out in two stages: the stomach is reshaped into a narrow tube, after which the small intestine is rerouted so most of it is bypassed in active digestion.
Effectiveness: one of the strongest bariatric procedures, with 80–90% excess weight loss and a long-lasting result.
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
First comes a consultation with the surgeon — your medical history, the method and a recovery plan

Lab tests
A complete blood count, urinalysis, biochemistry, HbA1c and clotting test (coagulation panel).
Instrumental diagnostics
Leg vein Doppler, chest X-ray, ECG, and abdominal and kidney ultrasound.
Endoscopy
Gastroscopy (required) and colonoscopy (if indicated).
Specialists
GP and endocrinologist, psychiatrist, cardiologist, and gynecologist for women.

Diet
Avoid fast carbs and fats during the 2–4 weeks before surgery; eat lightly the day before.
Lifestyle
Quit smoking one month before, limit physical activity, avoid stress.
The day before
Evening: last light meal. Fluids: stop 3–4 hours before the operation.

Lab tests
A complete blood count, urinalysis, biochemistry, HbA1c and clotting test (coagulation panel).
Instrumental diagnostics
Leg vein Doppler, chest X-ray, ECG, and abdominal and kidney ultrasound.
Endoscopy
Gastroscopy (required) and colonoscopy (if indicated).
Specialists
GP and endocrinologist, psychiatrist, cardiologist, and gynecologist for women.

Diet
Avoid fast carbs and fats during the 2–4 weeks before surgery; eat lightly the day before.
Lifestyle
Quit smoking one month before, limit physical activity, avoid stress.
The day before
Evening: last light meal. Fluids: stop 3–4 hours before the operation.
Experienced bariatric specialists who are committed to patients' health

Ruslan S. Menzulin
Bariatric surgeon · surgical oncologist
Underwent training at Mercy clinic under Vadim Gushchin; spoke at the World Congress of bariatric surgery (2025). Co-authored international research published in The Lancet.

Andrey G. Ugay
Lead bariatric surgeon · surgeon
Top in the country by number of SASJ operations performed. Expert council member of the national Society of Bariatric Surgeons, with regular talks at national and international congresses.
City Medical Centre takes a full-picture approach to obesity. Once the first examination is done, each patient gets a tailored diagnostic program (lab and instrumental) that reveals every disorder in the body.

A method matched to your goal
Our doctors choose the surgical method individually for each patient. Before deciding, they review your health, weight history and related conditions to offer the most suitable surgical treatment.

Support that stays in touch
After surgery the City Medical Centre team continues to support you. Throughout year one, specialists track weight loss, review your tests and answer all your questions on diet and recovery.

Fast recovery
Bariatric operations at City Medical Centre use laparoscopy, which greatly cuts recovery time. Most patients move around on day one and get back to normal life within a week.

Full diagnostics on site
No need to travel between clinics. From our own lab to ultrasound and gastroscopy, the centre has all you need for your work-up. Preparation is fast, without queues, in one building.
Recovery largely depends on the individual, but minimally invasive laparoscopic techniques keep rehabilitation as short as possible.

Duration
The length of clinic observation is 1 to 5 days, depending on the extent of the operation 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 go back to work 7–14 days after surgery, depending on how physical the job is.
Restrictions
For the first few weeks, skip the bathhouse, sauna and intense exercise.
Diet
You follow a staged diet for 1–2 months, going from liquid to solid food as the stomach adapts.

Pace
Average monthly loss is 10% of excess weight for patients following the specialists' advice.
Stabilization
The final result comes in 1.5–2 years. By that point the patient has developed stable eating habits that stop the weight from returning.
Important! City Medical Centre specialists keep recovery under supervision and give psychological and medical support at every stage of losing weight.

Duration
The length of clinic observation is 1 to 5 days, depending on the extent of the operation 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 go back to work 7–14 days after surgery, depending on how physical the job is.
Restrictions
For the first few weeks, skip the bathhouse, sauna and intense exercise.
Diet
You follow a staged diet for 1–2 months, going from liquid to solid food as the stomach adapts.

Pace
Average monthly loss is 10% of excess weight for patients following the specialists' advice.
Stabilization
The final result comes in 1.5–2 years. By that point the patient has developed stable eating habits that stop the weight from returning.
Important! City Medical Centre specialists keep recovery under supervision and give psychological and medical support at every stage of losing weight.
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
Bariatric vs plastic surgery: what's the difference?
The two are often confused, yet their goals differ fundamentally. Bariatric surgery is a medical treatment for obesity and its related diseases. It alters how the digestive tract works, tackling the causes of excess weight and metabolism. Plastic surgery changes the body's outer contours; it neither treats obesity nor affects metabolism.
How soon can I return to work and normal life?
Will there be visible scars?
Modern laparoscopic technique allows the operation through 4 small punctures of 5 to 15 mm. Cosmetic sutures make the marks almost invisible when fully healed.
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?
City Medical Centre offers four main types of bariatric surgery: sleeve gastrectomy, Roux-en-Y gastric bypass, mini gastric bypass (MGB) and SADI-S duodeno-ileal bypass. The method is chosen individually according to 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, vitamins are a must after bariatric surgery. Changes in digestive anatomy mean the body absorbs some nutrients less effectively, so regular vitamin and mineral supplements are part of the patient's life for good.
Can the weight come back?
Regaining weight after bariatric surgery is possible, yet very unlikely when you stick to the doctor's advice. The keys are proper nutrition, no high-calorie drinks and regular check-ups with City Medical Centre specialists.
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Bariatric surgery is a medical treatment for obesity and related diseases. Unlike plastic surgery, it changes how the digestive tract works and addresses the causes of excess weight. For patients from Sheffield, four main methods are available: sleeve gastrectomy, Roux-en-Y gastric bypass, mini gastric bypass and SADI-S. Each is chosen individually based on BMI, related conditions and personal goals.
It begins with a surgeon's consultation: medical history, choice of method and a recovery plan. Patients from Sheffield then complete a work-up — blood and urine tests, biochemistry, HbA1c, coagulation, chest X-ray, ECG, abdominal and kidney ultrasound, leg vein Doppler and a required gastroscopy — plus consultations with a GP, endocrinologist, psychiatrist, cardiologist and, for women, a gynecologist.
Before spending on another diet, get a professional assessment. A short no-cost talk with the surgeon, about a quarter of an hour, shows whether your BMI and related conditions justify surgery. If they do, one package takes you through tests, the operation, care in the ward and follow-up, with the weight loss result set in a contract. Residents of Sheffield can apply online.
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Apply before the end of the year and get a consultation at the clinic's expense!