When preparing for bariatric surgery like gastric sleeve surgery in Tijuana, undergoing a pre-surgery diet is vital to ensure a successful outcome. The pre-bariatric surgery diet aims to reduce the size of your liver and help you lose weight, making the procedure safer for you and your surgeon.

The length and specifics of your pre-surgery diet plan may vary depending on your surgeon’s preferences or the type of procedure you’re having. However, most pre-bariatric surgery diets typically start 2 to 3 weeks before the procedure day, with a focus on high-protein, low-carb, and low-fat foods.

This article will give you tips and meal ideas for your pre-bariatric surgery diet, helping you to develop healthy eating habits and achieve your weight loss goals before the surgery. By following this diet plan, you’ll get your body in the best possible shape for surgery day and aid a smooth recovery.

Planning Your Pre-Bariatric Surgery Diet

Planning your pre-bariatric surgery diet is crucial for achieving successful weight loss surgery outcomes. One of the main objectives of this diet is to reduce the size of the liver, making it easier for the surgeon to access and operate on the stomach. The diet also helps to reduce the risk of complications during and after surgery.

Here are some key points to keep in mind when planning your pre-bariatric surgery diet:


  • Your surgeon will provide you with detailed instructions on the specific diet to follow, but in general, the pre-surgery diet involves consuming high-protein, low-carbohydrate and low-fat foods.


  • The diet typically lasts for 2-4 weeks, although some surgeons may recommend longer periods depending on the surgery type and the patient’s overall health.


  • Avoid foods that are high in sugar and fat, as they can lead to weight gain and other health problems.


  • Prioritize lean proteins, like chicken, fish, eggs, and low-fat dairy. These are essential to preserving muscle while you lose weight.


  • Incorporate healthy carbohydrates, such as whole grains, fruits, and vegetables into your meals.


  • Stay hydrated by drinking plenty of water throughout the day. It’s also important to limit caffeine and carbonated beverages as they can dehydrate you.


  • Consult with a registered dietitian who specializes in bariatric surgery to help you develop a meal plan that works best for your individual needs and health goals.


By planning and following a pre-bariatric surgery diet, you can help reduce the risk of complications and boost your chances of success. Remember to follow your surgeon’s instructions closely, ask questions when you need clarification, and stay committed to making healthy choices that will benefit your long-term health journey.

The Importance of Following Your Pre-Bariatric Surgery Diet

Following a pre-bariatric surgery diet is crucial for the success of your procedure. Not following the diet as recommended can lead to serious complications during the surgery, such as bleeding, longer operation time, and increased risk of infection.

The pre-bariatric surgery diet is designed to help you lose weight, decrease the size of your liver and improve your overall health before undergoing surgery. The diet is high in protein and low in carbohydrates and fats. It may also include a protein-based meal replacement program to achieve the necessary calorie and nutrient levels.

Failure to properly follow your pre-bariatric surgery diet can also result in poor weight loss outcomes following your procedure. The first year post-surgery is when most people experience significant weight loss, and adhering to the pre-surgery diet plays a significant role in achieving this outcome.

Your pre-bariatric surgery diet is individualized based upon your health history, weight, and specific surgery procedure. Medical and nutritional professionals will provide you with guidance and information to ensure you are following the appropriate nutrition plan. It is essential to follow their instructions and communicate any challenges or concerns you may have.

Foods to Incorporate Into Your Pre-Bariatric Surgery Diet

When preparing for bariatric surgery, it is essential to follow a strict pre-surgery diet to reduce the size of the liver and decrease the risk of complications during the operation. A pre-bariatric surgery diet typically includes an intake of high-protein and low-calorie foods. Here are some of the foods that you should incorporate into your pre-bariatric surgery diet:

Lean Protein Sources

Individuals who undergo bariatric surgery will consume less food and fewer calories after the operation. Therefore, a high-protein diet is crucial in maintaining muscle mass and promoting weight loss. Incorporating lean protein sources like skinless poultry, fish, eggs, and low-fat dairy products will help you meet your protein needs, maintain your muscle, and keep you feeling fuller for longer periods.

Fresh Vegetables and Fruits

Eating fresh vegetables and fruits is an excellent way to get essential vitamins, minerals, and fiber. They are low in calories, fat, and high in nutrients, which means you can consume them in larger amounts without compromising your health. Leafy greens, broccoli, carrots, asparagus, berries, and citrus fruits are examples of nutrient-dense vegetables and fruits that you should include in your pre-bariatric surgery diet.

Whole Grains

While carbohydrates are not a primary macronutrient in pre-bariatric surgery diets, whole grains like quinoa, brown rice, whole wheat bread, and oats can be included in moderation. They are excellent sources of fiber, which can improve digestion and prevent constipation. Whole grains also contain essential vitamins and minerals that will support your health before and after the surgery.

Healthy Fats

Although high-fat foods should be avoided or limited in a pre-bariatric surgery diet, healthy fats like avocado, olive oil, and nuts should still incorporate into your meal plan. Healthy fats promote satiety, help absorb essential vitamins, and support cardiovascular health.

Before you start your pre-bariatric surgery diet, consult with a registered dietitian or healthcare provider to ensure that you are meeting your nutritional needs and achieving your weight loss goals.

Protein, Vitamins, and Nutrients to Focus On

When preparing for bariatric surgery, focusing on consuming sufficient amounts of protein, vitamins, and nutrients is essential. This is especially important since you’ll be on a low-calorie diet in the weeks leading up to your surgery, and ensuring that you get enough protein and nutrients is key to maintaining good health during this critical period of time.

Here are the essential nutrients you should focus on when planning your pre-bariatric surgery diet:


Protein is an essential macronutrient that is critical for maintaining muscle mass and supporting healthy metabolism. When preparing for bariatric surgery, it’s essential to consume protein-rich foods. This could include lean meats, poultry, fish, low-fat dairy products, beans, and legumes. In addition, you may want to consider incorporating high-quality protein supplements into your diet.


After bariatric surgery, patients are at risk of vitamin deficiencies, so it’s critical to boost vitamin intake before surgery to prevent any deficiencies. You should focus on consuming foods that contain vitamins A, B-1, B-12, C, and D, as these are the most commonly deficient vitamins in bariatric patients.

In addition to dietary sources, vitamin supplements are essential in preventing deficiencies. Vitamins will also help you recover faster after surgery, so it’s important to keep taking them after the surgery.


Nutrient-rich foods and supplements including magnesium, iron, calcium, and zinc, are essential for a pre-bariatric surgery diet. These nutrients help to maintain optimal organ function, aid in recovery, and also help to prevent deficiencies.

In addition to dietary sources, adding vitamin and mineral supplements to your diet plan can help ensure you are getting the essential nutrients your body needs.

It is essential to consult with your doctor or dietician before making significant changes to your diet, including a change to your pre-bariatric surgery diet. Your doctor can guide you on the right path and ensure that you have a healthy and balanced diet, ensuring that you are in optimal health when it’s time for surgery.

Preparing for bariatric surgery requires a significant commitment, but the benefits of the procedure far outweigh the necessary changes to your lifestyle, habits, and diet. The most critical aspect of preparation is following the pre-bariatric surgery diet plan, which involves consuming smaller portions of nutrient-rich foods and avoiding high-fat, high-carbohydrate, and sugary items.

By sticking to your pre-bariatric surgery diet, you’ll not only reduce the size of your liver, but you’ll also develop healthier eating habits that will continue long after the surgery. Remember that adherence to this diet is a tremendous factor in the success of bariatric surgery, as it helps reduce the risks and complications associated with the procedure.

When following the pre-bariatric surgery diet, it’s essential to stay in contact with your bariatric surgeon, dietitian, and primary care doctor to ensure that you’re progressing as expected and that you can maximize your health benefits after the surgery. Always be sure to follow their recommendations, remain committed to the pre-bariatric surgery diet plan, and you’ll be one step closer to an improved quality of life.

At Baja Plastic, you can rest assured that you will receive all the information and support you need for both pre and post-surgery care to achieve optimal results.