If you’re considering bariatric surgery, you’re not alone in this journey. Thousands of people choose this life-changing procedure yearly for better health and a more manageable weight. However, similar to any surgery, bariatric surgery carries its own set of risks and potential complications. Whether you’re curious, nervous, or already on your journey, this article is your go-to for understanding bariatric surgery.
The Most Prevalent Post-operative Risks and Side Effects Linked to Bariatric Surgery
You’ve made it through surgery, and now it’s time to heal. But let’s be real: the road to recovery isn’t always smooth. From acid reflux to infection, the potential risks and complications vary in severity and frequency. Understanding them ahead of time can help you prepare and, most importantly, avoid them when possible.
Acid Reflux
One of the most common post-op side effects is acid reflux, or GERD (Gastroesophageal Reflux Disease). Imagine the discomfort of stomach acid creeping up your esophagus, leaving a sour taste in your mouth and a burning sensation in your chest.
Acid reflux can occur after bariatric surgery because the stomach is significantly smaller, and the valve that separates the stomach and esophagus may be affected. If patients don’t follow the post-op diet and try to eat too quickly or consume foods that irritate the stomach, reflux can worsen.
Stick to the recommended post-op diet, which typically includes small, frequent meals, and avoid foods that trigger any excess acid production. While this might seem easy, keep present that patience is your best friend here.
Anesthesia-Related Risks
Anesthesia, the miraculous method that allows us to sleep through surgery, comes with its own set of potential complications. While rare, risks associated with anesthesia can include allergic reactions, blood clots, and respiratory issues.
Anesthesia affects individuals differently. Pre-existing conditions such as heart disease or lung issues can increase risks. That’s why Dr. Choi and an anesthesiologist will review your medical history in great detail before surgery.
Ensure that Dr. Choi’s team has a full understanding of your health before the surgery, and express any concerns you may have. It’s better to be thorough than regretful. Don’t hesitate to ask questions; it’s your body, after all!
Chronic Nausea and Vomiting
While some discomfort is expected after surgery, chronic nausea and vomiting could indicate a more serious issue. If you’ve ever experienced persistent queasiness, you know how unbearable it can be.
Nausea and vomiting after bariatric surgery can be due to several factors, such as over-eating, eating the wrong types of food, or, in more severe cases, a blockage or narrowing of the stomach opening.
Eat slowly, chew your food thoroughly, and be aware of portion sizes. It’s tempting to go back into your favorite slop meals, but taking it slow will save you from an upset stomach and the bathroom.
Dilation of the Esophagus
Esophageal dilation occurs when the esophagus becomes stretched, causing difficulty for food to pass through easily, potentially leading to discomfort and regurgitation of food. In some cases, this might happen if the stomach opening becomes too tight after surgery.
Following Dr. Choi’s post-op guidelines, which include portion control and dietary adjustments, can help minimize the risk of esophageal dilation. It’s important to treat your newly remodeled stomach with respect.
Weight Gain or Failure to Lose Weight
Perhaps the most disappointing outcome for patients is the weight potential regain or insufficient weight loss. Bariatric surgery is only a tool, not a magic wand, and necessitates lifestyle changes for long-term success.
Commit to the long-term lifestyle changes recommended by Dr. Choi. The surgery is just one part of the journey, consistent effort and healthy habits are the most important aspects to consider while maintaining your results.
Long-Term Risks of Post-Bariatric Surgery
Bariatric surgery is not a quick solution for weight loss. It is a complex procedure that permanently alters your digestive system. Like all surgeries, bariatric surgery involves long-term risks that may not be immediately obvious and could take years to appear.
Dumping Syndrome
Dumping syndrome is the thing that happens when food moves too quickly from the stomach to the small intestine before excretion. This is more likely after surgeries like gastric bypass, where the size of the stomach is significantly reduced. When food passes through the stomach too quickly, it can lead to various unpleasant symptoms. It’s as if the body goes into shock mode, putting the stomach and intestines against each other.
You’re likely to feel nausea, dizziness, and sometimes even a rapid heartbeat. Early dumping syndrome can start as soon as 10 to 30 minutes after eating, while late dumping syndrome may hit about 1 to 3 hours post-meal. This is quite a common issue, with studies showing that up to 20-50% of patients may experience some degree of dumping syndrome following bariatric surgery.

Low Blood Sugar
After bariatric surgery, some patients may experience low blood sugar or hypoglycemia. The surgery changes how the body processes food, and sometimes it causes an overproduction of insulin after eating.
Feeling shaky, sweaty, anxious, or confused? Your body might need sugar. Severe cases can lead to loss of consciousness. Some individuals, particularly those who have had gastric bypass surgery, may experience this issue frequently. Studies show that around 5-10% of patients develop hypoglycemia after the surgery, often several years later.
Malnutrition
Bariatric surgery limits how much food you can eat, but it also changes how your body absorbs nutrients. When your stomach is smaller or bypassed, it’s more difficult for your body to obtain the necessary vitamins and minerals. This is not just about appearing slim, but about maintaining good health.
Malnutrition is sneaky. It might start as simple fatigue or hair loss but can progress to more severe issues like anemia, osteoporosis, or even nerve damage. Studies indicate that 30-50% of patients may experience nutrient deficiencies within a few years after surgery.
Ulcers
Procedures like gastric bypass and sleeve gastrectomy reduce the size of the stomach, which can lead to an increased risk of ulcers. The stomach’s natural acid is now concentrated in a smaller area, which can irritate the stomach lining, leading to malicious ulcers.
This pain often worsens on an empty stomach and may improve after eating, but it’s not a quick fix. Studies suggest that 10-20% of bariatric patients will develop ulcers within a few years after their procedure. Smoking, NSAID use (like ibuprofen), and even stress can increase this risk, so staying vigilant is essential.
Bowel Obstruction
Bowel obstruction is a serious condition in which the intestines become blocked, leading to a blockage of food, fluids, and excretions. Surgery may involve rerouting the intestines, which can sometimes lead to postoperative complications.
Bloating, severe abdominal pain, and vomiting are the main signs of bowel obstruction. If you experience these symptoms, it’s a medical emergency, seek help from Dr. Choi immediately. Unfortunately, bowel obstruction can occur in about 1-4% of bariatric patients, and it often requires additional surgery to correct.
Hernias
A hernia occurs when an internal part of the body pushes through a weakness in the muscle or surrounding tissue wall. After surgery, the abdominal muscles are weaker, and that makes it easier for parts of your intestines to slip through, causing a hernia.
Hernias often cause a noticeable bulge in the abdomen, along with pain and discomfort, especially when lifting heavy objects or straining. Hernias are quite common after bariatric surgery, affecting about 10-20% of patients, especially those who have had open rather than laparoscopic surgery.
Reducing Your Bariatric Surgery Risks
Whether it’s lowering your BMI, increasing your exercise, or stopping smoking, each of these steps is essential in ensuring that your journey to a healthier, more fulfilling you is as smooth as possible. Are you ready to dive in? Let’s get started.
Why Lowering Your BMI Before Surgery?
Before bariatric surgery, losing weight isn’t just about looking good in a hospital gown. It’s about improving your body’s ability to handle the procedure. When you decrease your BMI before surgery, you reduce the amount of fat that Dr. Choi has to navigate through.
How Much Should You Lose Before Surgery?
Dr. Choi recommends that you aim to lose between 5% to 10% of your body weight before your surgery. That might not sound like a lot, but trust Dr. Choi, those few pounds can make a world of difference. Every pound you lose isn’t just reducing your BMI, it’s boosting your confidence and empowering you to take control of your life. You can use Dr. Choi’s free BMI calculator to help you lose those pounds.
Increasing Your Exercise
The significance of exercise goes beyond burning calories and improving appearance. It also strengthens the cardiovascular, pulmonary, and musculoskeletal systems to prepare the body for surgical procedures.
What Types of Exercise Should You Do Before Surgery?
Here’s the thing: You don’t have to engage in intense workouts unless that’s your preference. Even gentle, graceful movements like walking, yoga, or swimming can greatly benefit your body. Imagine yourself on a long, leisurely walk, the sun kissing your skin, your body moving gracefully. Approach your exercise routine with positive energy. It’s not about punishing yourself, it’s about caring for your body and getting in the best possible shape for the life-changing journey of bariatric surgery.
Stopping Smoking
Smoking is a serious threat to our health, and it’s important to stay vigilant about its harmful effects. When it comes to bariatric surgery, smoking poses more than just a habit, it presents a real risk. Smoking can elevate the likelihood of complications during and after surgery. It’s akin to introducing turbulence into an otherwise smooth flight. Who would want that? Your body needs every bit of oxygen it can get during surgery, and smoking robs you of that.
How to Quit Smoking Before Surgery
Dr. Choi knows quitting smoking isn’t easy. It’s like breaking up with a toxic lover. But it’s worth it. If you need help quitting, don’t think twice about reaching out to Dr. Choi for resources. Whether it’s nicotine patches, gum, or counseling, there are so many ways to help you break free from the grip of smoking.

Every cigarette avoided brings you closer to a safer surgery and a healthier you. Imagine the invigorating sensation of fresh, clean air filling your lungs.


