Can you eat a gastric bypass diet without the surgery?

In this brief guide, we will discuss the following question, “can you eat a gastric bypass diet without the surgery?”, and other queries related to this topic.

Can you eat a gastric bypass diet without the surgery? 

Yes, you can eat a gastric bypass diet without surgery but it is not recommended to be done. Losing weight is not an easy procedure and during the journey, there are a lot of ups and downs. However, to lose weight people should follow a healthy lifestyle.

Fad diets are only effective for weight loss in the short term, so when the patient goes back to the normal diet he will gain more weight than before. 

Thus, lifestyle and behavior changes are major components of weight loss, especially in obese patients.

Gastric bypass and other weight-loss surgeries are recommended for morbidly obese patients that have followed many diets in the previous year along with pharmacotherapy and they failed to lose weight. 

Along with all the previously mentioned requirements, the patient should suffer from chronic and life-threatening diseases such as obesity, diabetes, and cardiovascular diseases. So, not everyone can undergo bariatric surgery or follow the gastric bypass diet.

Additionally, after the surgery, the patient will follow the gastric bypass surgery diet which has many stages to introduce food progressively. 

Moreover, this diet is not very nutritious and might lead to vitamin and mineral deficiency due to their inability to ingest nutritious food.

Moreover, the gastric bypass diet is very low in calories since the patient will be able to ingest liquids and only eat small amounts. 

So, it is hard to follow a normal patient because he will be hungry all the time and he will not continue with this starving diet.

Furthermore, the body will reduce its burning capacity due to the few calories ingested, so, after a long period the patient will stop losing weight and will end up having a weight plateau. 

Generally, no one is advised to consume 1200 calories per day to allow the minimal functioning of the metabolism.

What is a gastric bypass diet?

The gastric bypass diet is designed for patients who underwent gastric bypass surgery. It consists of different stages at each stage the patient can start introducing different types of food according to his tolerance.

The gastric bypass diet is not a weight loss diet. It is a diet planned to allow the healing of the gastrointestinal tract after surgery. Regular food is reintroduced slowly and progressively to the diet. Also, the patient might take months to go back to eating regular food.

In the first five to seven days following the surgery, the patient should follow a liquid diet that includes broth without spices, unsweetened juices without pulp, green tea, and jello. During this phase, milk, coffee, black tea or carbonated beverages should be completely avoided. 

Moreover, the patient is advised to take small frequent meals during the day since he can not tolerate large amounts of liquids at the same meal. When the first phase is done, it will be the time to shift to the next phase of the gastric bypass diet.

During this phase, the patient should go on a pureed diet. After one week of a full liquid diet, the patient will be able to tolerate thick and pureed food. This diet consists of consuming fat-free dairy products like milk, cheese, and yogurt, and puddings, custard, and pureed soups.

In addition, lean ground meat and scrambled eggs can be introduced to the diet. The patient should eat three to six small meals per day. 

Also, he should make sure to eat slowly and when he feels full, the patient should stop eating to avoid discomfort which can cause vomiting.

The pureed diet should be followed for a period of two weeks. In the next step, the patient should follow a soft diet. The patient can start consuming his calorie requirements as well as reaching his macronutrient requirements.

So, the patient can consume all the previously listed food while adding soft food such as milk with cornflakes, boiled rice and pasta, boiled vegetables like carrots, and zucchinis, or vegetables without skin, boiled lean meat, fish, and chicken. 

Here the patient can start consuming some types of fruits like soft bananas or applesauce. A soft diet should be followed for at least three weeks. After about six weeks to two months, the patient can go back to the regular diet.

However, the patient should avoid fatty and fried food, carbonated and caffeinated beverages, as well as all sweets, jams, and honey. In addition, the regular food should be reintroduced slowly and to the patient’s tolerance.


In this brief guide, we will discuss the following question, “can you eat a gastric bypass diet without the surgery?”, and other queries related to this topic.


Hi, I am Charlotte, I love cooking and in my previous life, I was a chef. I bring some of my experience to the recipes on this hub and answer your food questions.