Gastric Bypass

Gastric bypass surgery is performed to lose weight by reducing the size of their stomach and it is performed when non-surgical methods such as regular exercise and diets did not work to see the desired results.

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Gastric Bypass: All you need to Know

The popularity of Bariatric surgeries has grown in the last two decades and nowadays many hospitals have the needed facility for weight loss surgeries like bypass or sleeve. Read more about gastric bypass here:


There are overweight patients who had tried for years to lose weight through exercise and diet but didn’t achieve their goals. Gastric bypass (Roux-En-Y) is one of the most common weight loss (bariatric) surgery methods and like other weight loss surgeries, it will be done just when non-surgical weight loss methods like workout and diet didn’t work. All weight loss surgeries are done when the patient has serious weight-related problems like sleep disorders. The gastric bypass surgical procedure is like this: the surgeon creates a small pouch (bag) from the stomach and connects it to the small intestine. After the surgery, the food bypasses all of the stomach (just goes through the small pouch) and directly goes to the small intestine. So swallowed food bypasses most of the stomach and the first part of the small intestine. The primary reason for all weight loss surgeries is, of course, losing excess weight, but in fact, losing this excess weight reduces the risk of weight-related health problems like Gastroesophageal reflux disease (GERD), heart disease and stroke, high blood pressure, and cholesterol, obstructive sleep apnea, type 2 diabetes, and even infertility.


The cost of bariatric surgery other than the type of procedure depends on many factors like location, hospital quality, and surgery team fees. In fact, the main factor is location because the costs of living and services are the factors that determine facility costs and team fees. The cost of gastric bypass surgery is about 4,000 in Iran while it is about 20,000$ in Canada and 24,000$ in the US. Adding travel costs to this figure, gastric bypass surgery costs up to 5,000$ in Iran tops.


There are different kinds of weight loss surgery methods like gastric sleeve, gastric bypass, or gastric balloon. They are restrictive methods, meaning they limit the eating quantity; some other methods only stop absorbing food by the digestive system. After checking the patient both physically and mentally and discussing risks, benefits, and changes of lifestyle -the patient must commit to, the surgeon decides on the surgery method. If you are only overweight you could lose weight just by changing your lifestyle habits. But if you are obese or extremely obese and have tried for at least two years to lose weight by non-surgical methods like exercise or diet and couldn’t get a result, you are a weight loss surgery candidate. If your BMI is 30 to 35, you could be treated by gastric balloon and gastric banding and if your BMI is more than 35 gastric sleeve or gastric bypass surgeries would be chosen based on some other factors and surgeons’ decision. You can calculate your BMI by dividing your weight (Kg) by your square height in meters.

Frequently Asked Questions of the Gastric Bypass

What can you never eat again after gastric bypass?

Foods that can cause problems at this stage include:
Carbonated drinks.
Raw vegetables.
Cooked fibrous vegetables, such as celery, broccoli, corn or cabbage.
Tough meats or meats with gristle.
Red meat.
Fried foods.
Highly seasoned or spicy foods.

Is gastric bypass reversible?

Yes, gastric bypass is a reversible procedure. However its reversal would require an operation of the same or greater magnitude and risk as the original procedure.

Is gastric bypass safe?

While any surgical procedure has risks, bariatric surgery has been found to be one of the safest surgeries to undergo. It is considered as safe or more safe when compared to other elective surgeries

How does gastric bypass work?

A gastric bypass is where surgical staples are used to create a small pouch at the top of the stomach. The pouch is then connected to your small intestine, missing out (bypassing) the rest of the stomach.

How long does gastric bypass surgery take?

Gastric banding (LAP-BAND) and sleeve gastrectomy can be performed in 1-2 hours while gastric bypass is generally performed in 2-3 hours.

How to qualify for gastric bypass?

To be eligible for weight-loss surgery, you must meet the following requirements: Have a body mass index (BMI) of 40 or higher, or have a BMI between 35 and 40 and an obesity-related condition, such as heart disease, diabetes, high blood pressure or severe sleep apnea.

How to restart weight loss after gastric bypass?

Track intake. Eat protein first, then non-starchy vegetables, fruits, and carbohydrates (whole grains) last. Chew slowly, it should take you 25-30 minutes to eat. Avoid drinking liquids 30 minutes before and after meals

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