
Bariatric surgery patients are often advised to follow a specific diet to ensure a successful recovery and sustained weight loss. A common recommendation is to consume between 900 and 1,200 calories daily, with a focus on counting macronutrients (macros) to ensure adequate intake of protein, carbohydrates, and fats. Carbs, specifically, play a crucial role in providing energy, and patients are typically advised to consume 50 to 75 grams of carbs daily after the first year of surgery. This amount can vary depending on individual factors, and it's important to distinguish between simple and complex carbs, with an emphasis on choosing quality carbs over mere quantity.
Bariatric Diet Characteristics and Values Table
| Characteristics | Values |
|---|---|
| Calories | 900-1200 calories a day |
| Macronutrients | 50% protein, 35% fat, 15% carbohydrates |
| Carbohydrates | 50-75 grams of carbs a day |
| Sugar | Less than 15 tsp of sugar a day |
| Carbohydrate Types | Sugar, starches, and fiber |
| Net Carbs | Calculated by subtracting fiber from total carbs |
| Carb Quality | Focus on quality over quantity, choose complex carbs |
| Fluids | Drink at least 2 liters of water or non-caloric fluids daily |
| Supplements | Vitamin and mineral supplements recommended |
| Portion Sizes | Use measuring tools and a food scale to check portion sizes |
| Meal Frequency | Eat three meals a day to prevent snacking |
| Eating Speed | Eat slowly and chew small bites thoroughly |
| Foods to Avoid | Rice, bread, raw vegetables, fresh fruits, pork, steak, carbonated beverages |
| Foods to Choose | Ground meats, whole grain breads, brown rice, whole grain/high protein pasta |
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What You'll Learn
- Bariatric patients are recommended to consume 1,000 to 1,200 calories a day
- Counting macros helps control food choices and holds you accountable for eating the right amount
- Simple carbs like cookies and bread can cause a sudden spike in blood sugar levels
- Complex carbs like oats and legumes provide sustained energy levels
- Fluids should be consumed between meals, not with them, to prevent overeating

Bariatric patients are recommended to consume 1,000 to 1,200 calories a day
Counting calories is essential for weight loss, but tracking macronutrients (macros) can provide more favourable results. Macros refer to the components of food that provide energy: fat, protein, and carbohydrates. Each gram of fat contains nine calories, while protein and carbohydrates contain four calories per gram. Counting macros can help individuals eat a balanced diet and ensure they are consuming adequate nutrients.
For bariatric patients, it is recommended to avoid carbohydrates for the first six months after surgery, focusing primarily on protein. After this initial period, patients can introduce 50 to 75 grams of carbohydrates per day for sustained weight loss. It is important to choose healthy, complex carbs that provide sustained energy and essential nutrients. Simple carbs, such as donuts, cookies, and chips, can lead to sudden spikes in blood sugar levels and weight gain.
In addition to calorie and macronutrient tracking, bariatric patients should focus on eating balanced meals in small portions. They should also prioritise adequate protein intake, which is crucial for preserving muscular tissue and promoting a healthy lifestyle. To stay hydrated, patients should aim to drink at least two litres of water or non-caloric fluids daily.
It is important to note that individual calorie needs may vary, and patients should consult their healthcare professionals for personalised recommendations. The above guidelines provide a general framework to support bariatric patients in their weight loss journey and promote long-term success.
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Counting macros helps control food choices and holds you accountable for eating the right amount
Counting macros can be a great way to control your food choices and ensure you are eating the right amount. Macros, or macronutrients, are the three categories of nutrients that provide your body with most of its energy: protein, carbohydrates, and fats. After bariatric surgery, it is generally recommended that patients consume between 900 and 1,200 calories a day. This will vary depending on individual factors such as height, weight, age, and activity level.
By counting macros, you can ensure you are meeting your caloric and percentage needs. For example, a person looking to build muscle and lose fat may aim for a ratio of 50% protein, 35% fat, and 15% carbohydrates. Counting macros can help you be more mindful of any imbalances in your current intake. For instance, you may realize you are eating too many carbohydrates and not enough protein, or vice versa. This can be especially helpful for bariatric patients, as they typically need to focus on consuming adequate protein while limiting carbohydrates in the initial months after surgery.
There are several ways to count macros. You can use a food scale to weigh your food and track your intake using a physical journal or a mobile application. Many nutrition apps, such as MyFitnessPal or Lose It!, are designed to simplify macro tracking. It is important to note that counting macros does not consider food quality, only quantity. Therefore, it is essential to focus on the quality of the food you are consuming and ensure you are meeting your nutritional needs beyond just macronutrients.
Additionally, when calculating your carbohydrate intake, it is recommended to calculate net carbs by subtracting fiber from the total carbs. Not all carbs are equal; complex carbs, such as whole grains, legumes, and starchy vegetables, are considered healthier options as they provide sustained energy levels and essential nutrients. On the other hand, simple carbs, like cookies, chips, and sugar, can lead to sudden spikes in blood sugar levels and are often associated with weight gain.
Overall, counting macros can be a valuable tool for bariatric patients to control their food choices and ensure they are consuming the right amount of nutrients to support their health and weight loss goals. However, it is always recommended to consult with a healthcare professional or a dietitian to determine the best dietary approach for your specific needs.
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Simple carbs like cookies and bread can cause a sudden spike in blood sugar levels
Bariatric surgery patients are advised to consume between 900 and 1,200 calories daily, depending on their specific needs and goals. Counting macronutrients ("macros") is a popular strategy to ensure adequate calorie and nutrient intake. Macros refer to the energy-providing macronutrients: fat, protein, and carbohydrates.
Carbohydrates, or "carbs," are particularly significant in the bariatric diet due to their impact on blood sugar levels. Simple carbs, such as cookies, bread, and other refined carbohydrates, can cause a sudden spike in blood sugar. This occurs because simple carbs are quickly broken down into sugar by the digestive system, leading to a rapid increase in blood sugar levels. While all carbs eventually turn into sugar, simple carbs have a basic chemical structure that the body can quickly and easily convert into energy.
In contrast, complex carbs are starchy, high-fibre foods that contain essential vitamins and minerals. They provide sustained energy levels and are considered the healthier option. Examples include whole grains, legumes, and certain fruits and vegetables.
Simple carbs like cookies and bread are often recommended against, especially in the initial months after bariatric surgery. They can cause a rapid increase in blood sugar levels, which can be dangerous for individuals with diabetes. When blood sugar spikes, the pancreas releases insulin, a hormone that prompts cells to absorb blood sugar for energy or storage. If the increased glucose from simple carbs is not utilised through exercise, it can turn into fat and contribute to weight gain.
To prevent blood sugar spikes, it is crucial to reduce the consumption of simple carbs and refined sugars. Additionally, staying hydrated by drinking enough water and engaging in regular exercise can help manage blood sugar levels.
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Complex carbs like oats and legumes provide sustained energy levels
Bariatric surgery patients are advised to consume 1,000 to 1,200 calories a day, with a focus on counting macronutrients ("macros") for weight loss. Macros refer to the components of food that provide energy in the form of calories: fat, protein, and carbohydrates. While carbohydrates are essential food nutrients, not all carbs are created equal.
Simple carbohydrates, found in foods like table sugar, syrups, sweets, canned fruit, juice, and soda, are quickly digested and absorbed, leading to a spike in blood glucose and a short-lasting energy boost. On the other hand, complex carbohydrates, such as those found in oats and legumes, take longer to digest and provide a more sustained release of glucose into the bloodstream, resulting in longer-lasting energy levels.
Complex carbs like oats, legumes, and other whole, minimally processed foods are starchy, high-fibre foods that contain essential vitamins and minerals (micronutrients). The high fibre content of complex carbs also contributes to a feeling of fullness and stable blood sugar levels over a longer period. This is particularly important for bariatric patients who may experience digestive issues and constipation due to insufficient fibre intake.
While simple carbs are often associated with weight gain due to their empty calories, complex carbs can support sustained weight loss by providing a more stable energy source. However, it's important to note that not all complex carbohydrates are healthier choices. Refined grains, such as white flour and white rice, have been processed, removing many beneficial nutrients and dietary fibre. Therefore, it's essential to consider the overall nutritional profile of a food rather than solely focusing on its carbohydrate content.
For bariatric patients aiming for sustained weight loss, it is recommended to limit sugar intake to less than 15 teaspoons per day and consume 50 to 75 grams of carbohydrates. By incorporating complex carbs like oats and legumes into their diet, patients can benefit from sustained energy levels and a reduced risk of nutrient deficiencies.
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Fluids should be consumed between meals, not with them, to prevent overeating
Bariatric surgery can be life-changing, but it's essential to follow a strict diet and lifestyle plan to ensure the best results and overall health. A common question is, "How many carbs can I eat after bariatric surgery?" and the answer varies depending on the individual and their stage of recovery. Generally, it is recommended to avoid carbs in the first six months, focusing primarily on protein sources. After this initial period, some carbohydrates can be reintroduced, but it is essential to choose the right types and amounts.
The role of carbohydrates in the body is crucial to understand. Carbs come in three forms: sugar, starches, and fibre. When reading nutrition labels, the "total carbs" include all three types. Sugar is the most well-known form of carbohydrate, and it is often associated with weight gain and blood sugar spikes. Starches, on the other hand, are found in whole, minimally processed foods like corn, beans, oats, and whole wheat. These starches are complex carbohydrates, also known as "good carbs," as they provide sustained energy levels and essential vitamins and minerals. Simple carbohydrates, or "bad carbs," are usually to blame for weight gain and health issues. These include donuts, cookies, chips, and white bread.
Counting macronutrients ("macros") is a popular way to ensure a balanced diet after bariatric surgery. Macros include fat, protein, and carbohydrates, and they provide the bulk of the body's energy. Counting macros allows individuals to be more mindful of their food choices and ensures they meet their caloric and nutritional needs. For example, a person looking to lose weight and build muscle may aim for a diet of 50% protein, 35% fat, and 15% carbohydrates. However, it's important to note that counting macros doesn't consider food quality, only quantity, so it's crucial to choose healthy options within each macronutrient group.
Now, let's focus on fluids. It is recommended to consume fluids between meals rather than with them to prevent overeating and promote better digestion. While there is a common misconception that drinking water with meals is harmful, this has been proven false by experts. Drinking water with meals can aid digestion, especially during the chewing and swallowing stages, and it does not affect the rate at which food moves out of the stomach. Additionally, water can help pause between bites, allowing individuals to check in with their hunger and fullness signals. This mindful eating practice can prevent overeating and promote weight loss.
However, it is important to note that this advice primarily applies to water and non-caloric fluids. Sugary drinks, milk, and juice consumed with meals can increase total calorie intake by 8-15%. Alcoholic and highly acidic drinks may also negatively impact digestion by drying up saliva, although this mainly refers to hard liquor. Individuals should base their fluid consumption with meals on what feels best for their bodies. If drinking fluids with meals causes discomfort, bloating, or worsens gastric reflux, it is best to stick to drinking fluids between meals.
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Frequently asked questions
Bariatric patients are recommended to consume anywhere from 900 to 1,200 calories a day. This may vary depending on individual factors.
The recommended daily carb intake for bariatric patients depends on the individual and the type of bariatric surgery they have had. As a general guideline, patients who are over a year out from surgery should stick to 50 to 75 grams of carbs per day.
The focus should be on including complex carbs such as flaxseed, oats, whole grain bread, and legumes. These provide sustained energy levels and are high in fibre. Simple carbs, such as donuts, cookies, and chips, should be limited as they can lead to sudden spikes in blood sugar levels and weight gain.
It is important to prioritise the quality of carbs over quantity. Counting macros can be helpful, but it is also important to consider food quality and choose complex carbs that provide sustained energy. Additionally, fluids should be consumed between meals, not with meals, to prevent stretching the stomach pouch and feeling hungry sooner.











































