Having weight loss surgery? Here’s the lowdown on what you’re allowed on the pre op liquid diet:
There are no standardized guidelines for the pre bariatric surgery liquid diet, so there are many acceptable approaches.
The option I’ll describe here is a mostly liquid diet using approved bariatric specific meal replacement shakes + 1 whole food-based meal per day:
Drink 64 ounces of low calorie, sugar free, caffeine free beverages throughout the day.
Enjoy “free foods” as needed: sugar free jello, sugar free popsicles, and broth or miso.
Meal replacement shakes are different from protein shakes.
A meal replacement shake provides a balance of macronutrients (protein, fat, and small amount of carbs)…and fiber too… just like a balanced meal would. Protein shakes provide just that…protein.
Don’t underestimate the distinction. It matters. The fiber and small amount of carbs in the meal replacement shakes makes all the difference in the world when you’re on the pre op liquid diet.
Your daily whole food-based meal can consist of up to 2
cups of low carbohydrate (nonstarchy) vegetables and 1 teaspoon of oil.
Enjoy a variety of nonstarchy vegetables like these:
DON’T FORGET ABOUT
AND OF COURSE:
Lettuce/Salad Greens: Arugula, Bibb lettuce, Butter lettuce, Collard greens, Endive, Green leaf lettuce, Kale, Mustard greens, Red leaf lettuce, Romaine, Spinach, Swiss chard, Watercress
1 cup salad greens (example: romaine, butter
lettuce, spinach, arugula, and/or kale) + 4 added vegetables at ¼ cup each:
Top with 1 teaspoon olive oil, unlimited balsamic vinegar and spices as desired (pepper, dill, etc.)
Combine all ingredients and enjoy!
4-6 different vegetables to total 2 cups. Example:
Sauté all vegetables in 1 teaspoon sesame oil. Season to taste with low sodium soy sauce, garlic powder and/or red pepper flakes.
For the 2 weeks preop, avoid the starchier vegetables like
A sample day could look like this:
+ 64 ounces of calorie free beverages throughout the day
You may feel tired or low energy because your calories and carbs are so low.
What to do: Drink at least 64 ounces of water or low-calorie sugar free beverages, get plenty of sleep, and avoid strenuous exercise during the 2 week pre op diet. Just take it easy!
Unfortunately, yes, this is a potential :(
It's due to lactose intolerance or lactose sensitivity to the milk protein (whey protein) in most meal replacement shakes and protein drinks. Even if you have never been lactose intolerant before, this can happen due to the quantity of shakes you drink: 4 per day for a week = 28 liquid "meals." In two weeks that's 56 liquid meals. What comes in, goes out. You get the picture.
What to do: Talk to your surgery practice about switching to lactose free products or plant based products. Or START with them to begin with. This is the lactose free meal replacement drink I use with my patients: