Bariatric Surgery: Risks, Complications, and Side Effects


Bariatric surgery, a medical procedure designed to help individuals with severe obesity achieve lasting weight loss, has become increasingly popular in recent years. While the benefits of these surgeries are undeniable, it is crucial for potential patients to be aware of the associated risks, complications, and side effects. In this blog, we will delve into the potential pitfalls of bariatric surgery, shedding light on the importance of informed decision-making and the necessity of seeking expert guidance. For those considering bariatric surgery in Bangalore, we recommend consulting with Dr. Sumit Talwar, recognized as one of the best bariatric surgeons in the region.

Understanding Bariatric Surgery:

Bariatric surgery includes various procedures, such as gastric bypass, sleeve gastrectomy, and adjustable gastric banding. These surgeries aim to restrict the amount of food the stomach can hold or reduce nutrient absorption, leading to significant weight loss for patients who have struggled with obesity.

Risks Associated with Bariatric Surgery:

  1. Infection:
    Any surgical procedure carries a risk of infection. Patients must follow post-operative care instructions meticulously to minimize this risk.
  2. Bleeding:
    Excessive bleeding during or after surgery is a potential complication that requires prompt medical attention.
  3. Blood Clots:
    The risk of developing blood clots increases after surgery. These clots can be dangerous if they travel to vital organs, causing complications like pulmonary embolism.
  4. Dumping Syndrome:
    Rapid emptying of the stomach contents into the small intestine, known as dumping syndrome, can lead to nausea, weakness, and diarrhea after consuming certain foods.
  5. Gastrointestinal Leaks:
    In rare cases, leaks may occur at the surgical sites, leading to infection and other complications. Close monitoring and immediate intervention are necessary to address this issue.

Complications Arising from Bariatric Surgery:

  1. Nutritional Deficiencies:
    Reduced nutrient absorption may result in deficiencies in essential vitamins and minerals, necessitating long-term supplementation.
  2. Gallstones:
    Rapid weight loss can contribute to the formation of gallstones, causing pain and potentially requiring additional medical intervention.
  3. Hernias:
    Incisional hernias may develop post-surgery, necessitating further surgical procedures to address the issue.
  4. Strictures:
    Narrowing of the openings between stomach compartments can occur, requiring corrective measures to ensure proper digestion.

Side Effects of Bariatric Surgery:

  • Hair Loss:
    Some patients experience temporary hair loss due to changes in nutrient absorption. However, this is often reversible with proper nutrition.
  • Dumping Syndrome Symptoms:
    As mentioned earlier, dumping syndrome can result in symptoms like nausea, weakness, and diarrhea after consuming certain foods.
  • Changes in Bowel Habits:
    Alterations in bowel habits, such as constipation or diarrhea, may occur after bariatric surgery.


While bariatric surgery offers a transformative solution for individuals struggling with severe obesity, it is essential to acknowledge and understand the potential risks, complications, and side effects associated with these procedures. Choosing a highly qualified and experienced surgeon, such as Dr. Sumit Talwar in Bangalore, is paramount for ensuring a safe and successful outcome. Before embarking on the journey of bariatric surgery, prospective patients should engage in thorough discussions with their healthcare providers, weigh the potential benefits against the risks, and commit to comprehensive post-operative care to maximize the chances of a positive outcome.

Dr Sumit Talwar