Mini Gastric Bypass
The mini gastric bypass (MGB) is a type of weight loss surgery that involves creating a small stomach pouch and bypassing a portion of the small intestine. It is a less invasive version of the traditional gastric bypass surgery, which is a more complex procedure that involves dividing the stomach into two sections and rerouting the small intestine. The MGB is typically performed laparoscopically, which means that it is done through several small incisions using specialized instruments.
The main goal of the MGB is to help people with obesity lose weight by limiting the amount of food they can eat and reducing the absorption of calories from the food they do eat. The procedure is typically recommended for people with a body mass index (BMI) of 35 or higher, or for people with a BMI of 30 or higher who have other health problems related to obesity, such as type 2 diabetes or high blood pressure.

The MGB is generally considered to be a safe and effective procedure for weight loss, although it does carry some risks, such as bleeding, infection, and complications from the anaesthesia. Most people who undergo the MGB experience significant weight loss in the first year after surgery, although long-term success depends on factors such as diet and exercise habits, as well as the individual’s ability to follow their post-surgery care plan.
Table of Contents
Mini Gastric Bypass Side Effects
Like any surgical procedure, the mini gastric bypass (MGB) carries the risk of certain side effects. Some common side effects that may occur after MGB surgery include:
- Nausea and vomiting: It is common for people to experience nausea and vomiting after MGB surgery, especially in the first few weeks after the procedure. This may be due to changes in the digestive system or to the use of pain medications.
- Dumping syndrome: Dumping syndrome occurs when food moves too quickly through the small intestine, causing symptoms such as nausea, vomiting, diarrhea, abdominal cramps, and dizziness. This can be triggered by eating high-sugar or high-fat foods.
- Nutrient deficiencies: Because the MGB surgery bypasses a portion of the small intestine, there is a risk of developing nutrient deficiencies, such as low levels of iron, calcium, or vitamin B12. It is important to take supplements and follow a balanced diet to prevent these deficiencies.
- Gallstones: Some people who undergo MGB surgery may develop gallstones, which are hard, pebble-like deposits that can form in the gallbladder. These stones can cause abdominal pain and may require treatment.
- Anaesthesia complications: There is a risk of complications from the use of anaesthesia, such as allergic reactions or breathing problems.
- Infection: There is a risk of infection at the incision site or elsewhere in the body after MGB surgery.
- Bleeding: There is a risk of bleeding during or after the MGB surgery.
It is important to discuss the potential risks and side effects of the MGB procedure with a surgeon before deciding to undergo the surgery.
Read Also: What Is Mini Gastric Bypass? How To Do To Whom Is It Done?
Long-Term Effects of Mini Gastric Bypass
The long-term effects of mini gastric bypass (MGB) surgery can vary depending on the individual and their specific circumstances. In general, most people who undergo MGB surgery experience significant weight loss in the first year after the procedure. Studies have shown that people who have the MGB procedure are likely to lose between 50 and 80 per cent of their excess body weight within the first year after surgery.
However, the long-term success of MGB surgery depends on several factors, including the individual’s diet and exercise habits, their ability to follow their post-surgery care plan, and their overall health. Some people may regain some of the weight they lose after MGB surgery if they do not maintain a healthy lifestyle, while others may continue to lose weight or maintain their weight loss over the long term.
There are also potential long-term side effects of MGB surgery to consider. These may include nutrient deficiencies, such as low levels of iron, calcium, or vitamin B12, which can occur as a result of bypassing a portion of the small intestine. It is important for people who have had MGB surgery to take supplements and follow a balanced diet to prevent these deficiencies. Other potential long-term side effects of MGB surgery may include dumping syndrome, which occurs when food moves too quickly through the small intestine, causing symptoms such as nausea, vomiting, and diarrhoea, or the development of gallstones, which are hard, pebble-like deposits that can form in the gallbladder.
It is important to discuss the potential long-term effects of MGB surgery with a surgeon before deciding to undergo the procedure.

Mini Gastric Bypass Surgery Pros and Cons
Like any surgical procedure, the mini gastric bypass (MGB) has both potential benefits and risks to consider. Here are some pros and cons of MGB surgery:
Pros:
- Weight loss: MGB surgery can help people with obesity lose significant amounts of weight. Studies have shown that people who have the MGB procedure are likely to lose between 50 and 80 percent of their excess body weight within the first year after surgery.
- Improved health: Weight loss after MGB surgery can lead to improvements in health conditions related to obesity, such as type 2 diabetes, high blood pressure, and sleep apnea.
- Less invasive: MGB surgery is generally less invasive than traditional gastric bypass surgery, as it involves smaller incisions and does not require dividing the stomach.
- Shorter recovery time: Because MGB surgery is less invasive, people who have the procedure may have a shorter recovery time than those who have traditional gastric bypass surgery.
Cons:
- Risks of surgery: Like any surgical procedure, MGB surgery carries the risk of complications, such as bleeding, infection, and complications from the anaesthesia.
- Nutrient deficiencies: MGB surgery involves bypassing a portion of the small intestine, which can lead to nutrient deficiencies, such as low levels of iron, calcium, or vitamin B12.
- Dumping syndrome: MGB surgery can cause dumping syndrome, which occurs when food moves too quickly through the small intestine, causing symptoms such as nausea, vomiting, diarrhoea, abdominal cramps, and dizziness.
- Gallstones: Some people who undergo MGB surgery may develop gallstones, which are hard, pebble-like deposits that can form in the gallbladder. These stones can cause abdominal pain and may require treatment.
It is important to carefully weigh the pros and cons of MGB surgery and discuss them with a surgeon before deciding whether to undergo the procedure.
Mini Gastric Bypass vs Gastric Bypass
The mini gastric bypass (MGB) and gastric bypass surgery are both types of weight loss surgery that involve creating a smaller stomach pouch and bypassing a portion of the small intestine. However, there are some key differences between the two procedures:
- Invasiveness: MGB surgery is generally less invasive than traditional gastric bypass surgery. MGB surgery is typically performed laparoscopically, which means that it is done through several small incisions using specialized instruments. Gastric bypass surgery, on the other hand, involves a larger incision and requires dividing the stomach into two sections and rerouting the small intestine.
- Recovery time: Because MGB surgery is less invasive, people who have the procedure may have a shorter recovery time than those who have traditional gastric bypass surgery.
- Weight loss: Both MGB and gastric bypass surgery can lead to significant weight loss, but the amount of weight loss may differ between the two procedures. Some studies have shown that people who have MGB surgery may lose slightly less weight than those who have traditional gastric bypass surgery, although the difference may not be significant for most people.
- Risks and complications: Both MGB and gastric bypass surgery carry certain risks and complications, such as bleeding, infection, and complications from the anaesthesia. However, because MGB surgery is less invasive, it may carry a lower risk of complications than traditional gastric bypass surgery.
It is important to discuss the specific risks and benefits of both MGB and gastric bypass surgery with a surgeon before deciding which procedure is right for you.
Read Also: How Serious Is Gastric Bypass Surgery?
Mini Gastric Bypass vs Gastric Sleeve
Two procedures:
- How the stomach is modified: MGB surgery involves creating a small stomach pouch and bypassing a portion of the small intestine, while gastric sleeve surgery involves removing a large portion of the stomach and creating a smaller, sleeve-shaped stomach.
- Weight loss: Both MGB and gastric sleeve surgery can lead to significant weight loss, but the amount of weight loss may differ between the two procedures. Some studies have shown that people who have MGB surgery may lose slightly less weight than those who have gastric sleeve surgery, although the difference may not be significant for most people.
- Risks and complications: Both MGB and gastric sleeve surgery carry certain risks and complications, such as bleeding, infection, and complications from the anaesthesia. However, the specific risks and complications may differ between the two procedures.
- Nutrient deficiencies: MGB surgery involves bypassing a portion of the small intestine, which can lead to nutrient deficiencies, such as low levels of iron, calcium, or vitamin B12. Gastric sleeve surgery does not involve bypassing any part of the intestine, so the risk of nutrient deficiencies is generally lower with this procedure.
It is important to discuss the specific risks and benefits of both MGB and gastric sleeve surgery with a surgeon before deciding which procedure is right for you.
What is Mini Gastric Bypass Diet
After undergoing mini gastric bypass (MGB) surgery, it is important to follow a specific diet in order to promote healing, maximize weight loss, and prevent complications.
In the first few weeks after MGB surgery, you will be on a liquid diet to allow your stomach time to heal. You will need to consume protein shakes, broth, and other low-fat, low-sugar liquids. As you progress, you will be able to add soft foods to your diets, such as mashed potatoes, scrambled eggs, and pureed vegetables.
After about six weeks, you will be able to eat most types of solid foods, although you will need to eat small, frequent meals and avoid foods that are high in sugar or fat. You will also need to chew your food very well in order to help your body digest it properly.
It is important to follow your surgeon’s specific guidelines for your MGB diet and to take any recommended supplements to prevent nutrient deficiencies. You may also be advised to follow a low-carbohydrate diet in order to help you lose weight and improve your overall health.
It is also important to drink plenty of fluids after MGB surgery, as this can help to prevent dehydration and constipation. You should aim to drink at least 64 ounces (about 2 liters) of water per day.
It is essential to follow your MGB diet carefully in order to promote weight loss, improve your overall health, and prevent complications.
Mini Gastric Bypass In Turkey Frequently Asked Questions.
Weight loss after mini bypass surgery, also known as a single anastomosis gastric bypass (SAGB) or mini gastric bypass (MGB), can vary widely among individuals. Some people may experience significant weight loss after the surgery, while others may lose only a small amount of weight or even gain weight.
The amount of weight you lose after mini bypass surgery will depend on a number of factors, including your starting weight, your diet and exercise habits, and your individual metabolism. Some people may lose a significant amount of weight in the first few months after surgery, while others may lose weight more slowly.
After mini gastric bypass surgery, it is important to follow a balanced, nutrient-dense diet to support your overall health and help you achieve and maintain your weight loss goals. This may involve making some changes to your diet, such as eating smaller, more frequent meals and avoiding high-fat, high-sugar, and high-calorie foods.
It is also important to drink plenty of fluids, especially water, to stay hydrated and help prevent constipation, which can be a common side effect after mini gastric bypass surgery.
While it is not necessary to be on a specific diet for life after mini gastric bypass surgery, it is important to continue making healthy lifestyle choices, including eating a healthy diet and being physically active, to support your long-term weight loss and overall health.
Obesity is a serious health condition that can increase the risk of a number of health problems, including type 2 diabetes, high blood pressure, heart disease, stroke, and some cancers. Losing weight can help reduce the risk of these health problems and improve overall health.
In addition to helping with weight loss, mini gastric bypass surgery can also have other health benefits, such as improving blood sugar control in people with type 2 diabetes, reducing high blood pressure, and improving sleep apnea and other sleep disorders.
It’s important to note that mini gastric bypass surgery is not a quick fix and requires a long-term commitment to healthy lifestyle changes, including a healthy diet and regular physical activity, to achieve and maintain the health benefits of the surgery. Working closely with your healthcare team, including a registered dietitian and a physical therapist, can help you make the necessary lifestyle changes and achieve your weight loss and health goals.
In general, the recovery process after mini bypass surgery follows a similar pattern for most people. Immediately after surgery, you will need to stay in the hospital for a few days to allow your healthcare team to monitor your progress and ensure that you are recovering well. During this time, you will be given pain medication to help manage any discomfort you may be feeling.
Once you are discharged from the hospital, you will need to take it easy for the first few weeks to allow your body to heal. This may include avoiding strenuous activity and lifting heavy objects. Your healthcare team will provide you with specific instructions on how to care for yourself during the recovery period.
As you recover, you will gradually be able to return to your normal activities. Most people are able to return to work within a few weeks of surgery, although it may take longer if your job involves physical labor. It’s important to follow your healthcare team’s instructions and take it easy as you recover to ensure a smooth and successful recovery.
There are a few key differences between gastric bypass surgery and mini gastric bypass surgery:
Procedure time: Mini gastric bypass surgery typically takes less time to perform than traditional gastric bypass surgery.
Hospital stay: Most people are able to go home the same day after having mini gastric bypass surgery, while traditional gastric bypass surgery usually requires a longer hospital stay.
Recovery time: Mini gastric bypass surgery generally has a shorter recovery time than traditional gastric bypass surgery.
Effectiveness: Both gastric bypass surgery and mini gastric bypass surgery can be effective for weight loss, but traditional gastric bypass surgery may be more effective for some people.