What İs Obesity Surgery

The question what is obesity surgery is important for people who consider excess weight not only an aesthetic concern but also a serious health condition that can affect overall health. Obesity surgery includes surgical treatment methods that support weight control by affecting stomach capacity, the digestive process, or metabolic responses in patients whose body mass index is above a certain level and who have been unable to achieve sustainable weight loss despite diet and exercise. These procedures may be planned not only for weight loss but also to help control obesity-related conditions such as type 2 diabetes, hypertension, sleep apnea, fatty liver disease, and joint problems.

For patients seeking obesity treatment in Istanbul, the decision for surgery is not based solely on body weight. In Assoc. Prof. Dr. Ozan Şen’s approach to obesity and diabetes surgery, the patient’s body mass index, eating habits, metabolic status, accompanying diseases, previous weight loss attempts, and ability to comply with postoperative follow-up are evaluated together. Therefore, obesity surgery is a treatment process that is planned individually and requires multidisciplinary follow-up.

What Is the Purpose of Obesity Surgery?

Obesity surgery aims to support weight loss in patients with severe excess weight by reducing stomach capacity, increasing the feeling of fullness, or altering nutrient absorption. However, surgery alone is not sufficient for successful results. The surgical procedure should be considered together with dietary changes, regular follow-up, physical activity, and lifestyle modifications.

The main goals of obesity surgery include:

• Controlled reduction of excess weight
• Supporting the improvement of obesity-related metabolic diseases
• Improving mobility and quality of life

Maintaining long-term weight control
Reducing the risk of conditions such as diabetes, hypertension, and sleep apnea

For this reason, obesity surgeries should not be viewed merely as “weight loss surgery.” When performed with appropriate patient selection, they can be a significant surgical treatment option that may provide multidimensional benefits for overall health.

Who Is Suitable for Obesity Surgery?

The answer to the question who is eligible for obesity surgery is not determined solely by the patient’s weight. In general, surgical options may be considered for individuals with a body mass index of 40 or above. Obesity surgery may also be considered for people with a body mass index of 35 or above who have additional conditions such as type 2 diabetes, hypertension, sleep apnea, fatty liver disease, or joint problems.

In some patients, even when the body mass index is lower, surgical evaluation may be considered based on the status of metabolic diseases, diabetes control, and weight loss history. However, not every patient is suitable for surgery. Active stomach diseases, uncontrolled psychiatric conditions, severe addictions, or the possibility of being unable to comply with postoperative follow-up are carefully assessed during the decision-making process.

During an obesity surgery evaluation in Istanbul Şişli, medical suitability is just as important as the patient’s expectations. The goal is not rapid weight loss but the creation of a safe and sustainable health plan.

What Evaluations Are Performed Before Obesity Surgery?

A detailed preparation process is required before obesity surgery. During this process, the patient’s suitability for surgery, potential risks, and postoperative needs are determined. The initial assessment includes height, weight, body mass index, waist circumference, existing diseases, medications being used, and previously attempted weight loss methods.

The following evaluations are generally performed during the preoperative period:

• Blood tests and metabolic assessment
• Evaluation of the stomach structure with endoscopy
• Cardiology and anesthesia assessment
• Chest X-ray and other radiological examinations when necessary
• Abdominal ultrasonography to evaluate the liver, gallbladder, and other abdominal organs
• Dietitian consultation
• Psychological assessment when necessary
• Control of conditions such as diabetes, hypertension, and sleep apnea

These examinations are important for determining which surgical method may be more appropriate. For example, the choice of surgical method may differ in a patient with reflux symptoms, while options with stronger metabolic effects may be considered in a patient whose type 2 diabetes is more prominent.

Methods Used in Obesity Surgery 

Obesity surgery does not consist of a single procedure. Different surgical methods may be preferred according to the patient’s health condition, degree of excess weight, metabolic diseases, and stomach structure. The most commonly used methods include sleeve gastrectomy and gastric bypass.

The main methods used in obesity surgery include:

• Sleeve gastrectomy
• Gastric bypass
• Mini gastric bypass
• Revisional obesity surgery
• Metabolic surgery procedures

Each method has a different mechanism of action, advantages, risks, and postoperative follow-up requirements. Therefore, the most appropriate method for the patient should only be determined after examination and diagnostic evaluations.

For Which Patients Is Gastric Bypass Considered?

Gastric bypass is an obesity surgery method that not only reduces the size of the stomach but also changes the route that food follows through the small intestine. Therefore, it is considered a surgical option that has both restrictive and absorptive effects.

Gastric bypass may be considered in some patients, particularly in the following situations:

• When type 2 diabetes is a prominent concern
• Presence of severe reflux symptoms
• Having previously undergone a different obesity surgery
• Metabolic problems accompanying significant excess weight
• Stomach anatomy or medical conditions that are unsuitable for sleeve gastrectomy

The selection of this method requires detailed evaluation. This is because postoperative vitamin and mineral monitoring, dietary planning, and follow-up programs need to be managed more carefully.

What Is the Relationship Between Metabolic Surgery and Obesity Surgery?

Metabolic surgery refers to surgical approaches performed to support the management of type 2 diabetes and other metabolic diseases associated with obesity. While obesity surgery primarily aims for weight loss, metabolic surgery also aims to influence blood glucose control, insulin resistance, and metabolic balance in addition to weight loss.

These two fields are not completely separate from each other. Many obesity surgery methods can also produce metabolic effects. Particularly in patients with type 2 diabetes, the decision for surgery is based not only on weight but also on the duration of diabetes, medications being used, insulin requirements, pancreatic reserve, and other health indicators.

In Assoc. Prof. Dr. Ozan Şen’s approach to obesity and diabetes surgery, the patient’s metabolic status is an important part of surgical planning. This allows treatment to be shaped not only according to weight loss goals but also according to overall health objectives.

The Process After Obesity Surgery 

The weight loss process after obesity surgery varies from person to person. In the initial postoperative period, a liquid diet is followed, after which the patient gradually progresses to pureed and soft foods. Over time, solid foods are introduced in a controlled manner.

Weight loss is generally faster during the first few months. However, long-term success depends on the patient turning the new dietary pattern into a lasting habit. Regular protein intake, sufficient fluid consumption, eating slowly, portion control, and regular physical activity are fundamental parts of this process.

During postoperative follow-up visits, weight loss, blood test results, vitamin and mineral levels, dietary compliance, and possible complaints are monitored. It is important that the patient is not left unsupported during this period and continues the process with the guidance of the surgeon and dietitian.

Nutrition After Obesity Surgery 

Nutrition after obesity surgery is one of the most important factors determining the success of the procedure. Because stomach capacity is reduced, the patient cannot eat as much as before; therefore, sufficient protein, vitamins, and minerals must be obtained from smaller amounts of food.

The main points to consider during the postoperative period include:

• Meals should be planned in small portions.
• Protein intake should be prioritized.
• Adequate water consumption should not be neglected.
• Sugary and carbonated beverages should be avoided.
• Food should be eaten slowly and chewed thoroughly.
• Vitamin and mineral supplements should be used according to the doctor’s recommendations.

If the patient does not adapt to the nutritional program, fatigue, hair loss, muscle loss, vitamin deficiencies, or a plateau in weight loss may occur. Therefore, postoperative follow-up should not be limited solely to changes on the scale.

What Are the Risks of Obesity Surgery?

Risks of obesity surgery may vary depending on the surgical method used, the patient’s general health condition, surgical experience, and the postoperative follow-up process. As with any surgical procedure, obesity surgery may involve risks such as bleeding, infection, leakage, blood clot formation, anesthesia-related complications, and nutritional deficiencies.

To reduce these risks, the preoperative assessment should be thorough, the patient should be prepared for surgery using the appropriate method, and postoperative follow-up appointments should not be neglected. The presence of risks does not mean that obesity surgery is unnecessary; rather, it demonstrates the importance of managing the process with an experienced team.

The patient’s smoking status, diabetes control, cardiovascular health, liver condition, and adherence to postoperative recommendations are also important factors in risk assessment.

What Should Be Considered When Choosing a Doctor for Obesity Surgery in Istanbul?

For patients searching for obesity surgery in Istanbul, choosing a doctor is not limited to deciding who will perform the operation. Obesity surgery is a process that requires long-term follow-up. Therefore, the surgeon’s experience, approach to the patient, preoperative assessment system, postoperative follow-up plan, and availability of multidisciplinary support should all be considered together.

Patients looking for an obesity surgery doctor in Istanbul should pay attention to the following points:

• The surgeon’s experience in obesity and metabolic surgery
• Selection of the surgical method according to the patient’s individual risks
• Detailed planning of preoperative examinations
• Availability of dietitian support and a follow-up process
• Transparent, realistic, and non-exaggerated information
• Hospital facilities and anesthesia capabilities

Obesity Surgery Prices 

Obesity surgery prices cannot be expressed as a single standard amount. This is because the surgical method to be performed, hospital conditions, materials used, the patient’s accompanying diseases, preoperative tests, length of hospital stay, and postoperative follow-up program may all affect the cost.

The costs of different methods such as sleeve gastrectomy, gastric bypass, or revisional surgery are not the same. In addition, conditions such as diabetes, heart disease, sleep apnea, or severe obesity may require additional evaluation and follow-up.

The appropriate approach in healthcare is not to make a decision based solely on price, but to consider the surgeon’s experience, hospital safety, follow-up system, and individualized treatment planning together. The most accurate price information is determined individually after examination and diagnostic assessments.

Is Obesity Surgery a Permanent Solution?

Obesity surgery can be a powerful treatment option for long-term weight control; however, lasting success depends on the patient’s adherence to lifestyle changes. Surgery can reduce stomach capacity, increase the feeling of fullness, and influence metabolic processes. However, if previous eating habits are resumed, weight loss may slow over time or weight regain may occur.

Therefore, obesity surgery should be considered a starting point. Regular follow-up, balanced nutrition, physical activity, adequate protein intake, and psychological adaptation are important for long-term success.