Obtaining detailed information before gastric sleeve surgery will help you prepare for both the process and the post-operative outcomes. It is important to ensure that the weight-loss goal you set aligns with the realistic weight you can achieve after surgery. Setting realistic goals is a healthier path to achieving long-term success. Common questions include how much weight can be lost and post-operative nutrition.
How Much Weight Can You Lose with Gastric Sleeve Surgery?
Gastric sleeve surgery is one of the most preferred methods in obesity surgery. First performed in 1988 in the U.S., it has since proven to be a highly effective procedure. Over the years, data has shown that, when performed by skilled surgeons, the likelihood of post-operative complications is very low, making it a reliable option for many seeking weight loss.
This surgery results in rapid weight loss in the first six months. Since the stomach volume is significantly reduced, the initial weight loss happens very quickly. Although the rate of weight loss decreases over time, it continues for an extended period. With the surgery’s effect, the weight-loss process can extend up to 18 months.
During the first month, due to the reduced stomach volume and hormonal changes, weight loss typically accounts for 10% of the initial body weight. It’s essential to focus on the percentage of weight loss rather than the total pounds lost. For example, a person weighing 300 lbs (136 kg) will lose more weight in the first month compared to someone weighing 250 lbs (113 kg). At the three-month mark, about 20% of the initial weight is lost, and by the 18-month mark, the total weight loss reaches 40% of the starting weight.
Example Calculation:
For someone weighing 330 lbs (150 kg):
- First month: 15 kg (33 lbs) lost, leaving the person at 135 kg (297 lbs).
- Three months: A total of 30 kg (66 lbs) lost, reducing the weight to 120 kg (264 lbs).
- 18 months: A total loss of 60 kg (132 lbs), bringing the weight to 90 kg (198 lbs).
The patient may continue losing weight beyond this period by maintaining healthy eating habits and regular exercise. The exact weight loss percentages can vary based on initial weight, gender, age, post-operative diet, and exercise.
Healthy Weight Loss After Gastric Sleeve Surgery
Instead of focusing solely on the total weight lost, the priority should be achieving healthy weight loss. Weight loss is a gradual process that requires patience and consistency for smooth progress. Rapid and excessive weight loss due to inadequate nutrition—particularly protein intake—can lead to complications such as muscle loss.
To prevent this, additional protein supplements should be consumed alongside meals during the first month. Over the following 12 months, patients must ensure their diet includes sufficient protein, vitamins, and minerals. Regular blood tests and muscle mass evaluations should be conducted to identify deficiencies and address them with necessary supplements. Post-operative follow-up appointments are essential for maintaining a healthy weight-loss process.
While the surgeon’s skill plays a significant role, the patient’s commitment, perseverance, and adherence to post-operative instructions are equally critical. Keeping a high level of motivation and understanding that the process is lengthy are key to reaching the desired outcome.
Is a Pre-Surgery Diet Necessary?
Patients preparing for obesity surgery must enter a pre-surgery preparation phase, including a customized nutrition plan based on their current condition and weight. By carefully adhering to the diet plan, patients can approach surgery safely and effectively.
Every surgical procedure carries its own risks, and the risk of complications increases with a higher Body Mass Index (BMI). Patients with a BMI above the threshold for gastric sleeve surgery may need to follow a diet to lose weight before undergoing the procedure.
One major risk factor is enlarged liver size, which increases surgical risks. Patients with a BMI of 50 or above are classified as morbidly obese and are usually placed on a special pre-operative diet to reduce BMI and shrink liver size. Whether you need a special diet before surgery is determined through medical evaluations. If necessary, our clinic provides dietary support. Following a personalized nutrition plan ensures the surgery can be performed safely and with minimal risk.
What About Patients Not in the Risk Group?
Patients who are not classified as high-risk do not need to follow a pre-operative diet. If evaluations show no additional risks, the surgery can proceed directly. After surgery, it is essential to strictly follow all instructions to ensure a healthy recovery process.
Gastric sleeve surgery initiates an 18-month weight-loss process. Success depends on strictly adhering to the prescribed diet and exercise plans during this period.
If you have further questions or need detailed guidance on gastric sleeve surgery, please feel free to reach out to us.
