Milly Gaines
Before bariatric surgery, it is important to switch to a low-sugar, low-fat, full-liquid diet that is high in protein and low in carbs. This is to reduce the size of the liver and make it easier for surgeons to perform the surgery. After surgery, you will begin with a clear liquid diet and gradually add thicker liquids to your diet. Two weeks following surgery, you may progress to blended and puréed foods.
High protein diet
Before bariatric surgery, it is recommended to follow a high-protein diet to promote healing and tissue repair after surgery. This diet typically involves consuming 60-100 grams of protein per day and limiting high-fat and high-sugar foods.
During the week or two before surgery, you will switch to a low-sugar, low-fat, full-liquid diet that is high in protein and low in carbs. This is done to reduce the size of the liver, making it easier for surgeons to perform the procedure.
After surgery, you will begin with a clear liquid diet and gradually introduce thicker liquids as you heal. Two weeks post-surgery, you can progress to blended and puréed foods, using high-protein liquid supplement drinks or powders to meet your protein requirements.
It is important to note that after bariatric surgery, your stomach will be significantly reduced in size, and you will need to manage portion sizes carefully. Your body will also require time to heal, so it is crucial to eat the appropriate foods in the right portions.
When following a high-protein diet before and after bariatric surgery, it is recommended to manage portion sizes and listen to your body's tolerance levels. If you experience any discomfort or difficulty tolerating certain foods, it is best to consult your healthcare team or a dietitian for guidance.
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Low sugar diet
A week or two before surgery, you’ll switch to a low-sugar, low-fat, full-liquid diet that’s high in protein and low in carbs. The protein will be important for healing and tissue repair after surgery, but there’s another reason for this step. The primary reason is to reduce the size of the liver so it’s easier to perform surgery, Lisa said. Fat and sugar increase the size of the liver. This can make it difficult for surgeons during bariatric surgery, which is performed laparoscopically through small incisions in the abdomen.
After bariatric surgery, you have a reconstructed stomach with much less capacity, so it’s very important that you give it time to heal by eating the appropriate foods in the right portions.
Get enough protein: Your body needs protein to build muscle and stay strong. Many bariatric surgery programs will recommend getting 60–100 grams of protein per day. Focus on eating high-protein foods and limiting high-fat, high-sugar ones. Manage portion sizes: Ask your healthcare team or a dietitian for recommended portion sizes for the foods you eat. Using smaller plates and utensils is one way to help limit your portions. Listen to your body: If you find that you can’t tolerate a certain food, such as something spicy or fried, don’t eat it.
Follow a diet low in calories, fats, and sweets. Keep a daily record of your food portions and of your calorie and protein intake. Eat slowly and chew small bites of food thoroughly. Avoid rice, bread, raw vegetables, and fresh fruits, as well as meats that are not easily chewed, such as pork and steak.
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Low fat diet
Before bariatric surgery, you will be required to switch to a low-sugar, low-fat, full-liquid diet a week or two before surgery. This diet will be high in protein and low in carbs. The protein will be important for healing and tissue repair after surgery, but there’s another reason for this step. The primary reason is to reduce the size of the liver so it’s easier to perform surgery. Fat and sugar increase the size of the liver. This can make it difficult for surgeons during bariatric surgery, which is performed laparoscopically through small incisions in the abdomen.
After 10 to 12 days, you can start to add soft foods back into your diet. Because you’ll want to focus on high-protein, you may consider eating scrambled eggs, steamed veggies, mashed potatoes, and other foods with similar consistencies. Your diet should continue to emphasize protein-rich foods while avoiding foods that are high in sugar and fat.
Get enough protein by eating high-protein foods and limiting high-fat, high-sugar ones. Manage portion sizes by asking your healthcare team or a dietitian for recommended portion sizes for the foods you eat. Using smaller plates and utensils is one way to help limit your portions. Listen to your body and avoid foods that you can’t tolerate.
Follow a diet low in calories, fats and sweets. Keep a daily record of your food portions and of your calorie and protein intake. Eat slowly and chew small bites of food thoroughly. Avoid rice, bread, raw vegetables and fresh fruits, as well as meats that are not easily chewed, such as pork and steak.
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Manage portion sizes
Managing portion sizes is an important part of the diet before and after bariatric surgery. After surgery, your stomach will have a much smaller capacity, so it's important to give it time to heal by eating the appropriate foods in the right portions.
Ask your healthcare team or a dietitian for recommended portion sizes for the foods you eat. Using smaller plates and utensils is one way to help limit your portions.
After surgery, you will begin with a clear liquid diet, and gradually start adding thicker liquids to your diet after you are discharged from the hospital. Two weeks following surgery, you may progress to blended and puréed foods.
You may use high-protein (more than 20 grams protein), low-calorie (less than 200 calories) liquid supplement drinks or powders to meet your protein requirements during this period. Many bariatric surgery programs will recommend getting 60–100 grams of protein per day.
Focus on eating high protein foods and limiting high fat, high sugar ones. Eat slowly and chew small bites of food thoroughly. Avoid rice, bread, raw vegetables and fresh fruits, as well as meats that are not easily chewed, such as pork and steak.
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Listen to your body
After 10 to 12 days, you can start to add soft foods back into your diet. Because you will want to focus on high-protein, you may consider eating scrambled eggs, steamed veggies, mashed potatoes, and other foods with similar consistencies. Your diet should continue to emphasize protein-rich foods while avoiding foods that are high in sugar and fat.
Get enough protein as your body needs it to build muscle and stay strong. Many bariatric surgery programs will recommend getting 60–100 grams of protein per day. Focus on eating high-protein foods and limiting high-fat, high-sugar ones. Manage portion sizes by asking your healthcare team or a dietitian for recommended portion sizes for the foods you eat. Using smaller plates and utensils is one way to help limit your portions.
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Frequently asked questions
A week or two before surgery, you’ll switch to a low-sugar, low-fat, full-liquid diet (64 ounces per day) that’s high in protein and low in carbs. The protein will be important for healing and tissue repair after surgery, but there’s another reason for this step. “The primary reason is to reduce the size of the liver so it’s easier to perform surgery,” Lisa said. “Fat and sugar increase the size of the liver. This can make it difficult for surgeons during bariatric surgery, which is performed laparoscopically through small incisions in the abdomen.”
After bariatric surgery, you have a reconstructed stomach with much less capacity, so it’s very important that you give it time to heal by eating the appropriate foods in the right portions. After 10 to 12 days, you can start to add soft foods back into your diet. Because you’ll want to focus on high-protein, you may consider eating scrambled eggs, steamed veggies, mashed potatoes, and other foods with similar consistencies. Your diet should continue to emphasize protein-rich foods while avoiding foods that are high in sugar and fat.
Many bariatric surgery programs will recommend getting 60–100 grams of protein per day. You may use high-protein (more than 20 grams protein), low-calorie (less than 200 calories) liquid supplement drinks or powders to meet your protein requirements during this period.
Follow a diet low in calories, fats and sweets. Keep a daily record of your food portions and of your calorie and protein intake. Eat slowly and chew small bites of food thoroughly. Avoid rice, bread, raw vegetables and fresh fruits, as well as meats that are not easily chewed, such as pork and steak.
Ask your healthcare team or a dietitian for recommended portion sizes for the foods you eat. Using smaller plates and utensils is one way to help limit your portions.
