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For the 42% of Americans who live with obesity, diet and exercise alone aren't always enough to reach a healthy weight. If you've been trapped in a cycle of failed weight loss, or your health is compromised, weight loss surgery (also called bariatric surgery) may be an option.

"Weight loss surgery is an option to consider for those who qualify, and it's a big decision to make that comes with a lifelong commitment to a healthy lifestyle,” Dr. Ziad Amr, a bariatric surgeon at Houston Methodist, said.

There are a few things to keep in mind when it comes to considering weight loss surgery. The first is whether a patient qualifies for weight loss surgery.

 

Typically, some basic guidelines apply. You should be age 18 or older, have a body mass index (BMI) of 40 or higher or a BMI of 35 or higher and an obesity-related condition, like diabetes, high blood pressure, high cholesterol or sleep apnea. For insurance coverage, patients will need a letter of medical necessity from their doctor. It's a good idea to talk with a weight loss surgeon about your situation and all the qualifications.

Dr. Amr also reminds patients that weight loss surgery is only one tool to help you on your journey to lose weight. You'll still need to make lifestyle changes such as diet and exercise along the way.  

 

As part of Houston Methodist’s program, patients receive nutritional guidance to create a plan that fits unique needs. Guidelines typically call for daily consumption of 800 to 1,500 calories and 60 to 80 grams of protein while avoiding too many carbohydrates such as bread, pasta and sugar.  

Foods high in sugar and fat will be reserved for special occasions and rarely eaten if you have gastric bypass surgery. Getting plenty of vitamin-rich and protein-rich foods is also important.

 

As for how much weight patients can expect to lose, it varies case by case.  

"It's hard to say exactly how much weight you might lose," Dr. Amr explained. "There are a lot of factors, including the type of weight loss surgery and how closely you follow your new diet after the procedure."

 

You'll want to talk with your doctor about what expectations are right for you. Generally, about 40 to 50 percent of weight is lost and kept off.

Dr. Amr points out that research shows successful weight loss surgery can help you live longer and reverse obesity-related conditions, while also providing other health benefits.  

 

"Not only will your physical health likely improve, but as you start moving and feeling better, your mental health can improve as well," Dr. Amr said. "It's a win for your overall well-being."