Primer plano del torso de una persona vistiendo un top deportivo azul texturizado, quien sostiene la cintura de unos pantalones vaqueros que le quedan notablemente grandes para mostrar su pérdida de peso.

What is bariatric surgery and how does it work?

Have you ever wondered what bariatric surgery really involves? Many people in Miami and across the United States have this question when they decide to seek help to lose weight. 

This procedure helps men and women manage severe obesity when diets, exercise, and other methods fail to produce results. 

In it At New Body Bariatric Center, we receive patients every day who want to know how it works., what the options are and what to expect from the process.

Here you will find a clear and detailed explanation to answer your questions and feel more confident in your decision.

What is bariatric surgery?

Bariatric surgery consists of a set of medical procedures to help people with severe obesity lose weight and improve their health. 

It changes the digestive system to limit the amount of food the stomach can hold or to modify the way the body absorbs nutrients.

In the United States, doctors often use body mass index (BMI) to determine if surgery is necessary., a BMI greater than 40, or greater than 35 with associated diseases such as type 2 diabetes or hypertension, This leads a specialist to consider intervention. This decision is made jointly with doctors, nutritionists, and psychologists after several consultations.

Most common types of bariatric surgery

There are several types of bariatric surgery, and each works differently. The most commonly used techniques in the United States are:

  • Gastric bypass (Roux-en-Y): A small pouch is created in the stomach and part of the intestine is diverted.
  • Gastric sleeve (vertical gastrectomy): A large part of the stomach is removed, leaving it in the form of a narrow tube.
  • Adjustable gastric band: A band is placed around the upper part of the stomach to limit the entry of food.
  • Duodenal switch: It combines the removal of part of the stomach with a more extensive intestinal diversion.

Here's a table to compare these options:

Type of surgeryMechanismAverage recoveryExpected weight loss
Gastric bypassRestriction + deviation2-4 weeks60-80% of the excess
gastric sleeveRestriction2-4 weeks50-70% of the excess
Gastric bandRestriction1-2 weeks40-50% of the excess
Duodenal switchRestriction + deviation4-6 weeks70-90% of the excess

How bariatric surgery works in the body

This procedure modifies the digestive system primarily in two ways: restricting the stomach's capacity or reducing food absorption. Some techniques also influence the hormones that control hunger and satiety.

That's why many patients report a reduced appetite and improvements in conditions like type 2 diabetes during the first few months. Their metabolism begins to function differently, and their body responds by gradually losing weight.

Who typically benefits from bariatric surgery

Not everyone who is overweight benefits from this surgery. Generally, candidates have the following characteristics:

  • Adults with a high BMI who have tried to lose weight through diet and exercise for a long time.
  • Men and women with weight-related health problems, such as sleep apnea, hypertension, and joint problems.
  • Patients willing to make lasting lifestyle changes after the operation.

It is customary to perform a complete medical evaluation before making a decision.

What to expect in the process

Those seeking bariatric surgery in the United States go through several stages:

  • PreoperativeLaboratory analysis, psychological evaluation, and dietary guidance.
  • Surgery day: usually under general anesthesia and via laparoscopy. The patient remains in the hospital for one or two days.
  • Recovery: rest in the first few weeks, gradual return to work and a diet adapted in phases.

The medical team closely accompanies and gives detailed instructions at each stage.

Care and changes after bariatric surgery

After bariatric surgery, the person follows specific instructions to achieve results and avoid complications.

  • Smaller, more frequent meals.
  • Vitamin and mineral supplements.
  • Constant hydration.
  • Regular check-ups to monitor health and weight.

Support groups are also very helpful in facing the challenges of this stage.

Possible risks and side effects

Like any surgery, bariatric surgery carries risks.

Among the effects that may appear are infections, bleeding, reflux, stenosis, and nutritional deficiencies. Therefore, it is important to stay in contact with healthcare professionals to detect any changes and correct them promptly.

Conclusion

Bariatric surgery offers an option for men and women facing severe obesity who have tried other solutions without success. Understanding how it works and what to expect helps you decide with more confidence. If you would like to learn more about the options available in Miami or schedule a consultation, the team at New Body Bariatric Center He's ready to help you.

Picture of Dr. Choi
Dr. Choi
Dr. Michael P. Choi, DO, is a board-certified general surgeon by the American Board of Surgery/American Osteopathic Board of Surgery and completed his bariatric surgery fellowship at the University of California, Davis. Over the past 12 years, he has performed more than 5,000 weight-loss procedures, including laparoscopic and robotic sleeve gastrectomy, gastric bypass, gastric balloon placement, and revision surgery. He graduated from Tulane University and earned his Doctor of Osteopathic Medicine degree from Nova Southeastern University, where he is currently an assistant professor and trains resident physicians. A native of South Florida, he treats patients in Spanish, English, Portuguese, and Korean.
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