Dietary guidance and foods to avoid after gastric bypass surgery

Dietary guidance after gastric bypass surgery

Nutrition

The goal of early postoperative dietary management is to restrict calorie intake to achieve weight loss, help patients establish appropriate eating habits, and prevent anastomotic rupture and obstruction.

The general principles include the following: ① Adequate fluid intake to avoid dehydration; patients should consume 64 ounces (about 1900 ml) of water daily.

Patients should drink a glass of water every hour, and avoid drinking water 30 to 60 minutes before meals.

Drink your beverage slowly and without a straw.

② Sufficient protein intake is necessary.

③ Mineral supplements should meet the body's daily needs.

④ Trace elements and vitamin B₁₂ must be supplemented daily.

⑤ Avoid consuming high-calorie foods, soft drinks, and snacks.

⑥ Patients should chew their food thoroughly before swallowing to avoid making it difficult to pass through the anastomosis site.

⑦ The diet should be formulated gradually based on tolerance.

Generally speaking, patients should eat three meals a day and stop as soon as they feel full.

Each meal should last at least 20 minutes, but no more than 30 minutes.

High-calorie beverages such as soda, milkshakes, alcoholic drinks, fruit juice, sweetened iced tea, or sugary drinks should be avoided.

Similarly, high-calorie sweets such as candy, cakes, cookies, ice cream, and snacks such as potato chips and dried fruit should also be avoided.

Eating high-protein foods at each meal can ensure adequate protein intake.

Protein powder and milk powder, such as GNC, SYN, M&R, and some other products, can also be added to skim milk to increase protein intake.

Exercise should be started gradually, provided the patient's condition permits.

Patients should always carry a bottle of water with them to ensure they drink it on time.

Postoperative dietary steps

The patient's diet should be followed as follows:

Phase 1: Postoperative Period/Clear Liquid Consumption (<1 week postoperatively)

The most important goal for the first 1-2 weeks after surgery is adequate fluid intake.

The patient must drink water constantly throughout the day, with a target of 64 ounces (about 1900 ml) of water per day.

Patients can drink diluted fruit juice to avoid nausea and diarrhea, but should gradually adapt to pure fruit juice.

Nausea and vomiting are common during this stage, but drinking water should not be stopped because of these problems.

In the first stage after surgery, patients should consume clear liquids, such as apple juice, orange juice, and semi-liquid orange juice without jam, or residue-free beef broth, chicken broth, and vegetable broth.

In addition, sugar-free coffee and tea (with added sweeteners), sugar-free jellies, sugar-free popsicles and sugar-free iced juices, Gatorade and various energy drinks, flavored beverages (non-carbonated), and Kraft sugar-free instant solid beverages are also good choices.

Phase Two: Liquid diet (2-3 days to 1 month)

After patients have gradually adapted to a clear liquid diet, they can try a semi-liquid diet.

This stage involves consuming mashed, pureed foods, similar to baby food, to promote chewing and absorption.

However, the timing when a patient can accept this stage of diet varies from person to person.

The key objectives for this phase are:

(1) Add high-protein foods to your diet.

(2) Start taking chewable vitamin tablets containing various minerals.

(3) Drink at least 64 ounces (about 1900 ml) of water per day to avoid dehydration.

The protein portion of each meal should be consumed first.

High-protein foods that can be consumed at this stage include soft cheese, ricotta cheese, scrambled eggs or egg soup, beef sauce, chicken, turkey, fish (excluding shellfish), and meats suitable for infants.

Fish and chicken are generally more tolerable than beef.

Do not drink water half an hour before meals and half an hour to one hour after meals.

Liquids that can be consumed between meals include skim milk, fruit juice, broth, unsweetened coffee and tea, sugar-free jelly, and sugar-free popsicles (same as the previous stage).

Patients should chew their food thoroughly to avoid difficulty swallowing and nausea.

Therefore, liquid foods are consumed in the initial stage because they are more easily tolerated, and then gradually transitioned to solid foods.

It should be noted again that the pace of adaptation at this stage varies from person to person.

Phase 3: Adaptation Period / Soft Foods (1-2 months)

The goal at this stage is to adapt to more solid foods.

These should include soft foods such as tuna, mashed potatoes, unfiltered oatmeal, stir-fries, and canned fruit.

Patients should be able to eat all protein foods, fruits, vegetables, and starches.

Generally, our recommendations for this stage are: ① Continue to add high-protein foods to your diet; ② Continue to take chewable vitamin tablets containing minerals; ③ Continue to drink enough fluids (64 ounces per day); ④ Add some low-fat, low-calorie starchy foods, fruits, and vegetables, if tolerated.

Patients should stop eating when they feel full.

All food cooking processes should avoid adding fat. Meat, fish, and poultry should be cooked by roasting, boiling, or grilling, and vegetable seasonings can be used instead of cooking oil.

If the patient cannot tolerate milk, yogurt, cottage cheese, and eggs can be used as substitutes.

Phase 4: Stabilization Period/Regular Food (After 2 Months)

During this stage, patients can eat regular food.

However, this does not mean they can resume their pre-operative diet.

Patients should continue to eat a balanced diet of three meals a day, including nutritious foods such as meat, poultry, pork, dairy products, vegetables, fruits, and starches.

These foods contain ample protein, vitamins, and minerals.

Since patients can only eat small amounts of food at each meal, their food should be nutritious and avoid foods that are high in sugar but lack protein, vitamins, and minerals.

Although patients may have a diet rich in vitamins and minerals, supplementation with vitamins and minerals is still necessary because the total amount of food consumed is limited.

During this stage, patients should have three nutritious and balanced meals every day.

The diet should include enough protein and water, and additional vitamins and minerals should be provided.

It needs to be emphasized again that patients should stop eating immediately after feeling full, and each meal should not last more than 30 minutes.

No fat should be added to any food during cooking; instead, seasonings such as herbs and spices can be used to replace cooking oil.

Foods to avoid after gastric bypass surgery

In the first stage, some foods are difficult to tolerate, while in the fourth stage, most foods are tolerable.

Meat, starchy foods, and vegetables are the most easily tolerated foods.

Consuming large amounts of sweets, high-fat foods, and high-calorie drinks can lead to weight gain and digestive problems.

Patients may have some difficulty absorbing and digesting meat and meat substitutes such as steak, hamburgers, pork chops with bones, fried or greasy fatty meat, poultry and fish.

Some starchy foods, such as wheat bran, cereals, oats, popcorn, whole grain or whole wheat bread (unbaked), whole grain cereal porridge, and noodle soup (soup with vegetables or noodles), are also difficult to tolerate.

Foods to avoid include high-fiber vegetables (dried beans, peas, celery, cabbage), raw vegetables, mushrooms, French fries, potato chips, tortillas, foods with too many seasonings and spicy foods, pickles, and sunflower seeds.

Patients should also avoid consuming dried fruits, coconut meat, or orange and grape peels.

Sugary carbonated drinks, candy, desserts, jams, and jellies should also be removed from the patient's diet.

Caffeine is a stimulant that can be found in more than 60 plants, including cocoa beans, tea, and coffee.

Caffeine is added to many soft drinks, as well as many over-the-counter medications, protein powders, and energy drinks.

Caffeine can cause a short-term increase in heart rate and act as a diuretic.

Therefore, if the above-mentioned beverages are your main drinks, the caffeine in them may cause dehydration.

Caffeine intake should not exceed 300mg, or daily coffee consumption should not exceed 3 to 5 ounces.

Caffeine intake should be gradually reduced to avoid headaches caused by caffeine withdrawal.

in conclusion

The goal of postoperative dietary management is to help patients lose enough weight to treat obesity-related complications and improve their quality of life.

This goal can be achieved by educating patients to develop healthy eating habits and regular physical exercise.

Patient education is essential for a mature bariatric surgery program and usually requires the help of a support team and medical professionals.

To avoid long-term problems caused by insufficient protein intake, adequate protein intake must be emphasized. At the same time, patients should be given guidance on how to choose a palatable and affordable protein source.

Patients who have undergone gastric bypass surgery are usually given prophylactic multivitamin/mineral supplements, including vitamin B₁₂, iron, and calcium, to compensate for nutritional deficiencies caused by malabsorption.

There are also some essential nutrients for which there is no definitive daily recommended intake, so we can selectively supplement them based on our own circumstances.

With professional nutritional counseling and support, patients should be able to follow postoperative dietary recommendations to meet their nutritional needs.