
A full liquid diet is a temporary diet that is prescribed for a variety of reasons, including surgery, digestive issues, or swallowing problems. It is important to note that this diet does not include all liquids, and there are certain foods and beverages that are not allowed. While on a full liquid diet, it is crucial to avoid solid foods and those with a thick, lumpy, or chunky texture, as these can pose challenges for swallowing and digestion. This exclusion list includes raw, cooked, or canned fruits and vegetables with skin or seeds, as well as grains, cereals, and mashed foods like mashed potatoes. Additionally, high-fiber juices, such as prune juice, and nectars should be avoided, along with solid desserts and ice creams containing nuts, chocolate chips, or other hard pieces.
| Characteristics | Values |
|---|---|
| Solid foods | Not allowed |
| Thick, opaque fluids | Not allowed |
| High-fiber juices | Not allowed |
| Raw, cooked, or canned fruits or vegetables with skin or seeds | Not allowed |
| Sugary foods (for people who have had bariatric surgery) | To be avoided or limited |
| Oranges and other acidic fruit and vegetable juices (for people who have had stomach surgery) | Not allowed |
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What You'll Learn

Solid foods
A full liquid diet is typically recommended for those who are healing from an injury or surgery involving the mouth, neck, jaw, or throat, and those with swallowing or chewing problems. It is also used as a transition step between a clear liquid diet and solid food after gastrointestinal surgery or procedures. This diet includes liquids and foods that turn to liquid at room temperature, like ice cream, and those that melt at body temperature.
- Raw, cooked, or canned fruits and vegetables, especially those with skin or seeds. High-fibre juices like prune juice, nectars, and orange juice with pulp should also be avoided.
- Grains are typically not recommended, though cooked cereals like farina or rice can be thinned with water or milk and then strained.
- Solid desserts like nuts, chocolate chips, and cookie pieces are not allowed.
- Mashed foods like mashed potatoes or avocado are not considered liquid foods.
- Soft foods that are high in fibre or fat, even if they are easy to chew.
It is important to note that a full liquid diet can be challenging to obtain enough nutrients, especially long-term. It is typically low in vitamin A, iron, vitamin B-12, thiamine, and fibre. For this reason, it is usually recommended as a short-term strategy, and those on this diet long-term may need to take supplements to prevent nutritional deficits.
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Thick, opaque fluids
A full liquid diet is often recommended by doctors as a short-term strategy when a person has a medical issue that makes eating solids dangerous. It is also sometimes followed before a medical test or procedure, or before certain kinds of surgery. A full liquid diet includes all foods that are liquid or will turn to liquid at room temperature or melt at body temperature.
High-fibre juices, such as prune juice, nectars, and orange juice with pulp, are not allowed on a full liquid diet. If you are having stomach surgery, it is also recommended to avoid orange juice and other acidic fruit and vegetable juices, as they may cause burning.
While ice cream is allowed on a full liquid diet, melted ice cream is considered a less nutritious option. Puddings and custards can be thinned to a liquid consistency with milk and are therefore allowed.
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High-fibre juices
A full liquid diet typically includes all foods that are liquid or turn to liquid at room or body temperature. This means that solid foods are not allowed. A full liquid diet is often recommended before or after certain medical procedures or surgeries, especially those involving the stomach or intestines. It may also be suggested for those experiencing difficulty swallowing or chewing.
- Start with a base of high-fibre fruits and vegetables: Choose ingredients that are naturally high in fibre, even after being juiced. For example, carrots and apples are good options.
- Add fibre-rich ingredients: To increase the fibre content of your juice, consider adding ingredients like flaxseed meal, chia seeds, or psyllium husks. These supplements can be included in small amounts without significantly altering the consistency of the juice.
- Blend instead of juice: Opt for blending rather than juicing. Smoothies tend to be higher in fibre because the blending process retains the fibre from the ingredients. In contrast, juicing typically removes the fibre or "bulk" from the fruits or vegetables.
- Strain your juice: If you are using high-fibre ingredients, ensure you strain the juice thoroughly to remove any solid pieces or pulp. This will help achieve the required consistency for a full liquid diet while still benefiting from the fibre content.
- Pair with a high-fibre snack: If you prefer a lower-fibre juice, you can pair it with a high-fibre snack to increase your overall fibre intake. Good options include oats, wheat bran, nuts, seeds, beans, fruits, or vegetables.
It is important to note that the specific recommendations for a full liquid diet may vary depending on individual needs and medical conditions. Consult with a healthcare professional or registered dietitian to determine the appropriate guidelines for your specific situation.
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Raw, cooked, or canned fruits with skin or seeds
A full liquid diet is made up of fluids and foods that are normally liquid or turn to liquid at room or body temperature. It helps people who are recovering from gastrointestinal procedures or have problems chewing or swallowing by reducing stress on the digestive tract.
Fruits that are allowed on a full liquid diet include apples, grapes, pears, tomatoes, and strained orange juice. It is important to avoid high-fiber juices such as prune juice, nectars, and orange juice with pulp.
If you are on a full liquid diet, you can cook vegetables into a soup, puree them, and strain them to remove any chunks or visible pieces. It is important to blend foods until they reach a stage 1 or "baby food" consistency with no chunks or visible pieces.
Most people will only need to follow a full liquid diet for a short period of time, from a few days to up to 2 weeks.
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Pureed foods with chunks
A full liquid diet is made up of fluids and foods that are normally liquid or turn to liquid at room temperature, like ice cream. It does not include solid foods. People may need to follow a full liquid diet before a medical test, procedure, or surgery, or after surgery on their stomach or intestine. It may also be followed by those who have trouble swallowing or chewing.
Pureed foods are sometimes included in a full liquid diet, but they should not contain any chunks or visible pieces. Pureed foods can be mixed into soups and other liquids, and milk, water, salad dressings, and mayonnaise can be added to moisten them for easier blending.
To achieve a pureed consistency, foods should be blended until smooth. This can be done with a blender, which is useful for blending meats or larger portions. People following a budget may prefer to blend foods at home, as buying pre-made pureed foods can be expensive.
Some foods that can be pureed include well-cooked rice or pasta, crackers, breads, and other grain products such as wheat, rice, oats, cornmeal, barley, or other cereal grains. Vegetable baby food is also an option, but it is important to choose products made for babies rather than toddlers, as toddler food tends to be thicker and chunkier.
While a full liquid diet can provide a break for the digestive system, it may not contain enough fiber, vitamins, or minerals. Therefore, it is important to follow a full liquid diet under the supervision of a healthcare professional, who may recommend taking vitamins and supplements.
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Frequently asked questions
Any solid foods are not allowed on a full liquid diet. This includes soft foods that require chewing, such as mashed potatoes. People on a full liquid diet should also avoid thick, opaque fluids and high-fibre juices.
A full liquid diet includes all foods that are liquid or will turn to liquid at room or body temperature. This includes milk, broth, smoothies, shakes, and ice cream.
Doctors usually recommend full liquid diets as a short-term strategy when a person has a medical issue that makes eating solids dangerous. For example, a person may be put on a full liquid diet before a medical test or procedure, or before certain kinds of surgery.











































