Obesity and weight
For those of you who are struggling to remove
We appreciate your efforts so far.
I don't deny it
Experienced surgeons and anesthesiologists perform the surgery
Comprehensive treatment utilizing the strengths of a general hospital
Comprehensive treatment utilizing the strengths of a general hospital
Let's think together about future treatments at Jikei University Hospital
How are (severe) obesity treated?
Proper diet and exercise are effective for weight loss
However, for those with severe obesity, it is difficult to lose weight sufficiently through this alone.
Recently, there are effective anti-obesity medications available, but they cannot be started immediately.
Side effects, cost, and continuity remain issues.
On the other hand, surgery for severe obesity has the problem of invasiveness,
A scientifically proven method for long-term weight loss and metabolic improvement .
It is the most commonly performed gastrointestinal surgery in the world.
Diet and exercise therapy
Diet and exercise are the foundations of obesity treatment, and without them, dieting will not be successful. However, it is known that it is difficult to lose weight sufficiently through diet alone. Many dietary therapy methods have been proposed, but there is still no absolute method, and the type and level of exercise that can be done will vary depending on the individual's situation. At Jikei University Hospital, you can receive support from nutritionists and physical therapists.
Which obese people should consider surgery?
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For those with severe obesity*,
Even if you can lose weight by working hard on your diet and exercise,
The weight loss is much less than ideal,
It probably didn't last long?
Surgeons have high hopes for future drug treatments.
You won't know if it's right for you until you try it.
If you hesitate to undergo obesity treatment or if treatment is not successful,
Obesity-related health problems will inevitably progress.
Once the disease has progressed, there is no going back.
Naturally, many people are afraid of surgery.
But if you postpone surgery,
You are also more likely to get less benefit from surgery.
Are you unsure about which treatment is right for you ?
Please consider the treatment option of surgery.
Why not ask your surgeon?
*To be precise, the BMI must be 35 or above, but since insurance coverage is for a BMI of 32 or above, on this website we will define severe obesity as a BMI of 32 or above.
Guidelines for those who are eligible for weight loss and metabolic improvement surgery under health insurance
Obesity with a BMI of 32 or more
People suffering from obesity-related illnesses
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Those who have not seen sufficient results from medical treatment (dietary and exercise therapy, drug therapy) for more than six months
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Ultimately, whether or not you can undergo surgery will be decided by the results of a multidisciplinary conference.
Is the surgery safe?
Safety No. 1
術前に適切な減量（5％が目標）や肥満関連健康障害の治療を行っていれば、消化器手術の中でも安全な手術であると考えられています（胆石や虫垂炎の手術と比較しても）。術後3日で退院を基本としています（入院期間は前日入院、手術日含めて5日間程度になります）。
What are the effects of the surgery?
Effect 1
術式によっても異なりますが、元の20～30％程度の体重が落ち、長期に減量が維持できると言われています。
Please be aware that the results of surgery vary from person to person.
In addition to sleeve gastrectomy , we also offer
Sleeve gastrectomy with bypass surgery
(On this website, we call it Sleeve Plus )
It is available as a medical treatment covered by insurance.
In addition, Roux-en-Y gastric bypass surgery is available at private expense.
We also offer OAGB (one anastomosis gastric bypass).
Reflux esophagitis with hiatal hernia after sleeve gastrectomy
Corrective surgery * for those who have had difficulty losing weight (including rebound)
This can be provided, so please speak to your surgeon.
In addition, our hospital also uses a method to prevent reflux esophagitis after sleeve surgery.
We are actively working on this.
Preoperative reflux esophagitis symptoms, endoscopic examination, esophageal manometry,
pH monitor testing is used as a reference.
For eligible patients,
Toupet sleeve with reflux prevention effect (only available at Jikei University Hospital in Japan)
We also offer this service.
* There are conditions for this treatment to be covered by insurance, so please ask your doctor.
Reasons why people choose our hospital
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Team medical care that supports obesity patients
I don't think anyone wants to be fat until they become severely obese. I'm sure many of you have tried various diets up until now. However, it is difficult for severely obese people to lose weight on their own. We will never dismiss your efforts up to now. Why not think about dieting together with us? We will support you with team medical care.
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Selectable obesity treatments
At Jikei University Hospital, internists and surgeons work together to propose the most appropriate treatment for you. We offer a range of treatments to suit your needs, from nutritional guidance and exercise therapy to evidence-based weight loss medication, endoscopic gastroplasty performed by a specialist endoscopist , and weight loss and metabolic improvement surgery.
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Types of surgery available
At Jikei University Hospital, your surgery will be performed by a surgical team boasting some of the most extensive surgical experience in Japan. We would like to work with you to determine what surgery you truly need. In addition to sleeve gastrectomy, which accounts for over 90% of surgeries in Japan, we also offer sleeve plus surgery (sleeve gastrectomy with bypass surgery) as covered by health insurance. At our hospital , sleeve plus surgery comes in three variations: sleeve bypass, sleeve PJB, and sleeve bipartition . In addition, we also offer Roux-en-Y gastric bypass and OAGB (both of which allow the stomach to be preserved) on a private basis. We would like to propose the surgical procedure that is best suited to you.
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All cases are performed using laparoscopic surgery with minimal scarring.
Using the latest 4K cameras and surgical instruments, we aim to perform safe and careful laparoscopic surgery under clear images. Surgery is performed using 5-10mm port incisions (4-5 locations) and 15mm port incision (1 location: 15mm for removing the resected stomach). Because the incisions are small, there is little pain, and patients can return to their daily lives quickly.
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An anesthesiologist experienced in weight loss surgery will be in charge of anesthesia.
There are still not many anesthesiologists in Japan who are accustomed to treating severely obese patients. At Jikei University Hospital, Dr. Kida of the Department of Anesthesiology leads the way by administering general anesthesia using a method that puts minimal strain on the body and monitoring the patient during surgery.
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術後鎮痛も積極的に行っています
Even with surgery that leaves only a small scar, the amount of postoperative pain varies from person to person. That's why Jikei University Hospital uses PCA (Patient Controlled Analgesia, or "self-controlled analgesia" in Japanese). A medical professional sets up the PCA pump, and the patient presses a button when they feel pain, allowing them to immediately receive a safe and effective amount of pain medication. The advantage of PCA is that the patient, who has the best understanding of their pain state, can use pain medication immediately when they feel pain.
In addition, a specialized team called the Jikei University Hospital Postoperative Pain Management Team will work to alleviate postoperative pain as much as possible.
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A backup system unique to a university hospital
Many patients with severe obesity have problems with multiple organs. We work with the necessary departments before surgery to ensure a safe surgery. Weight loss and metabolic improvement surgery is said to be one of the safest digestive surgeries, but you may encounter unexpected situations. In the unlikely event that this happens, Jikei University Hospital will do everything in its power to protect you.
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Surgeons who are well versed in treating surgical complications
Weight loss and metabolic improvement surgery is not 100% safe. Although rare, complications such as postoperative bleeding, suture failure (leakage), obstruction, and reflux esophagitis can occur. At Jikei University Hospital, surgeons with expertise in treating complications are among the most experienced in Japan, and will work in cooperation with the radiology and endoscopy departments to respond appropriately in the unlikely event of such a situation.
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Located in the city with good access.
It is an easy-to-visit hospital
Jikei University Hospital, located in Nishi-Shinbashi near Tokyo Tower, is easily accessible from major stations . When choosing a hospital, ease of access is also an important factor .
Nearest station:
A 3-minute walk from Exit A5 of Onarimon Station on the Toei Mita Line, a 7-minute walk from Exit 3 of Kamiyacho Station on the Hibiya Line, a 10-minute walk from Exit 1 of Toranomon Station on the Ginza Line, and a 12-minute walk from Shinbashi Station on the Ginza Line/Toei Asakusa Line (Exit 8)/JR (Karasumori Exit).
It is also an 8-minute taxi ride from JR Hamamatsucho Station and a 12-minute taxi ride from Tokyo Station.
Frequently asked questions
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Please feel free to ask your surgeon or bariatric staff any additional questions you may have.
Doctor introduction
Takashi Oshiro
Takashi Ohshiro
I don't think anyone wants to become severely obese.
We are well aware that obesity is not as simple as simply saying it is the individual's fault. It involves a complex interplay of genetics, lifestyle, and psychological issues.
We want everyone to understand that the surgery we provide is never a last resort. We want you to have surgery at the best time for you and receive the best results. Now is the time to regain your health for the future. Let's think about treatment together.
With the motto "Hate obesity, not the person," we promise to provide medical care that is close to the patient.
100 Tips for Dieting
Kohei Uno
Kohei Uno
Obesity is a disease that requires appropriate treatment.
When lifestyle management through diet and exercise and medication are insufficient, surgery is a treatment option.
As an expert in obesity treatment, I strive to keep up with the ever-evolving knowledge in this field and provide appropriate treatment.
We are currently in a position to offer a variety of treatment options, so if you are suffering from obesity, please come and see us.
Surgery Results
Sleeve Technique
408 items
Sleeve Plus Technique
80 items
Other bypass procedures
16 items
corrective surgery
29 items
This is the surgical record at Jikei University Hospital and Toho University Sakura Medical Center Hospital (Oshiro) up until August 2025.
Sleeves include 5 Toupet sleeves
Other bypass surgeries include Roux-en-Y gastric bypass and OAGB
Access information
Jikei University Hospital Obesity Outpatient Clinic (Weight Loss Surgery)
3-19-18 Nishi-Shinbashi, Minato-ku, Tokyo 105-8471
Easy access from multiple stations
Convenient location for visiting the hospital
We look forward to seeing you in Outpatient Building 4B.
Jikei University Hospital Outpatient BuildingPlease check here
inquiry
We will respond to your inquiries in the order they are received.
Depending on the content of your question, it may take some time for us to respond.
For inquiries regarding specific medical procedures and treatment details,
We are unable to provide an answer .
Please consult your doctor at the Obesity Clinic (Weight Loss Surgery).
To all medical institutions
This time, please consider referring patients with obesity .
Thank you very much.
We work with our doctors to provide treatment that will help patients achieve good health .
Medical Information Partnership Letter (Referral Letter)
" To Takashi Oshiro or Kohei Uno, Department of Surgery (Obesity Outpatient Clinic), Jikei University Hospital, Tokyo "
Please prepare a medical information form (letter of referral) at the time of your appointment.
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Takashi Oshiro
Monday Afternoon
Kohei Uno
Wednesday morning and afternoon
Outpatient day
Patient testimonials
To parents worried about their children's obesity
Childhood obesity is
There are few facilities that can provide specialized treatment,
In particular, in the case of severe obesity,
Unlike adults, the medications that can be used are limited .
Its treatment is very difficult .
In the "Obesity Treatment Guidelines 2024,"
Guidelines for weight loss and metabolic improvement surgery for children aged 13 and over have been published.
If you have any questions, please contact us.
