Drink diet. Features, pros and cons.

As the name suggests, a drinking diet is a diet in which only liquids (or foods that become liquid at room or body temperature) are allowed. The diet is recommended for various reasons, such as when it is difficult to swallow or when there are problems with the digestive system. However, a drinking diet is also widely used for weight loss.

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Weight loss on a liquid diet will be rapid and significant, even if you have not been on a liquid diet for a long time. Once the calorie deficit created by the hypocaloric diet is corrected, the weight is generally regained.


In some situations, a full liquid diet is necessary to ensure safety. For example, if you have problems chewing and / or swallowing, you are at risk of choking or aspiration when eating or drinking. A full liquid diet helps reduce this risk.

Removing food debris, and therefore food particles, also helps reduce complications if you have had dental surgery or a jaw injury.

Also, a liquid diet is recommended for patients with open sores in the mouth. This will allow the mouth to heal and prevent chunks of food from getting stuck in the holes and causing an infection.

If your digestive system is slow or damaged by illness or surgery, following a liquid diet while you recover will help control pain and prevent complications such as a blockage in the intestines (intestinal obstruction).

When preparing for a test or imaging procedure, you may need to eat a liquid diet for a day or two before examining your stomach and intestines. This will help ensure that no undigested food remains in the GI tract to interfere with the results.

A liquid diet is also required to prepare for other medical procedures. For example, it is generally required to drink only clear liquids before surgery to reduce the risk of aspiration.

How does it work

A completely liquid diet allows you to drink both clear liquids and thicker liquids such as milk, fruit juices, and smoothies.

Your doctor may allow you to eat other foods, such as strained puree or yogurt. If you have a medical condition that is affected by what you eat and drink, there will be additional dietary restrictions.

These options are the only ones on a completely liquid diet. This plan will make it difficult to get enough nutrients and calories every day.

Not only will you have to adhere to diet foods and drinks, but you will also need to strictly follow your doctor's instructions to ensure good nutrition. A registered dietitian will also be a helpful resource.


Usually a liquid diet is given for a few days before returning to a normal diet. It is seldom necessary to observe it for more than two weeks. The exceptions are people preparing for bariatric surgery, recovering from a broken jaw, or using a diet to treat exacerbations of certain diseases.

Due to its restrictive nature, you should be closely monitored by your doctor if you are on a full liquid diet for more than a few days.

What is allowed to eat

You will have a selection of drinks on a liquid diet. With the right tools, you will also make many solid foods diet. Melting, thinning, straining, or mashing fruits, vegetables, cheese, and even meat can help keep you full and full.

Compatible Products

  • Fruit and vegetable juices (without pulp);
  • Broth;
  • Drinks without alcohol;
  • Sports drinks, electrolyte replacement drinks;
  • Coffee Tea;
  • Milk or milk substitutes (soy, almond);
  • Smoothies, malt, smoothies;
  • Clear or creamy soups (diluted, strained, no solids);
  • Honey, syrup, sugar;
  • Jelly, pudding, custard;
  • Ice cream, frozen yogurt, sorbet (no nuts, candy, hard fillings);
  • Yogurt (plain or Greek; no muesli, seeds, pieces of fruit);
  • Melted cheese;
  • Protein powder, milk powder, other food additives.

Incompatible products

  • Meat (if not rubbed, minced or drained);
  • Tofu, meat substitutes;
  • Nuts and seeds;
  • Raw fruits and vegetables;
  • Hard cheese;
  • Soft foods or mashed potatoes (like potatoes)
  • Soups or stews with noodles, meat or vegetables;
  • Bread;
  • Durum wheat pasta or rice;
  • Cereals, muesli, oats;
  • Coba;
  • French fries, crackers, pretzels, popcorn;
  • Cupcakes, cakes, cookies, cakes;
  • Hard candies or gummies
  • Any other solid food without the special permission of a doctor.


Fruit and vegetable juices are allowed on a completely liquid diet as long as they have been strained to remove any particulate matter (such as pulp). Juices that are high in fiber, such as prune juice, may need to be avoided entirely. Making yours with a high speed blender or juicer allows you to control the consistency. Then strain the juice through a fine strainer to remove any solid residue.


Mashed potatoes and other types of vegetable puree are generally discouraged, but allowed if diluted enough. The puree can be mixed with butter, sauce or sauces, seasoned to taste, and diluted with water or broth. In consistency, such a puree should be like a smoothie.


Cooked cereals are diluted with water or milk and then filtered. Farina and rice grits are also easy to make less viscous. If you are trying to add nutrients, cook the cereal with whole milk or cream instead of water or skim milk.


Milk substitutes or lactose free are approved. Drink your favorite beverage out of the glass or add it to smoothies for added nutrition. Powdered milk is a versatile option that is added to cereals, soups, and eggs. You will increase the protein level in regular milk by mixing it with skimmed milk powder before using it to prepare liquid meals.

Yogurt and cottage cheese:

Plain yogurt works well as a base for sweet and liquid dishes, while Greek yogurt is a good base for savory recipes. Curd is easy to mix with liquid foods and most of the grated cheese will melt easily with a little heat.

Butter :

Although you are limited to a completely liquid diet, use oil as often as possible to add calories and fat to your food.


Meat is allowed if it has the consistency of baby food. Combine the meat with the potato flakes and milk before or after cooking to give it the consistency of a liquid diet.

Peanut butter :

Nut butter is a good source of healthy fats and proteins that are easy to add to smoothies and shakes.


Eggs, egg whites or egg substitutes are cooked soft and mixed with liquid food.


Ice cream, frozen yogurt, and ice cream that melts at room temperature are allowed for a liquid diet as long as they do not contain nuts, candy, or other hard lumps. The puddings and custards should be diluted to a runny consistency. If you need to add calories, try adding carefully chopped fruit with whipped cream to ice cream, pudding, malt, or smoothies.


Any clear broth, pulpless juices, or other beverages are allowed for a full liquid diet. You can use milk or powdered milk to add calories to your coffee or tea. Other hot beverages such as milk-based cider, tea and espresso are approved as long as they do not contain particles such as chocolate flakes or small spices.

To ensure proper nutrition and hydration, try to drink at least 1. 8 liters of fluid at the end of each day.

Recommended time

One of the problems with a liquid diet is knowing if you have been eating enough during the day.

However, if you have certain digestive disorders or are recovering from illness or surgery, you will often feel full quickly. The discomfort will come before you have enough calories to eat right.

Start drinking as much as you can every 15 minutes. Try sipping from a small glass rather than trying to drink more than once. You may need to schedule meals at least six to eight times a day.

Cooking tips

The easiest way to dilute soft foods to make them suitable for a full liquid diet is to add water. If food doesn't turn liquid at room or body temperature, apply a little extra heat.

Dairy products like grated cheese can be melted in the microwave and added to soups or purees. The chocolate also melts in a saucepan on the fire.

Kitchen utensils such as a food processor will be of great help when preparing liquid meals at home. The blender is especially useful when you are mashing fruits and vegetables, or when you are using it at low speed to blend tougher foods like oatmeal to a safe consistency.

Pasta, rice, and potatoes should be boiled until very soft and then diluted with water, oil, or sauce. You can also use warm water or milk to soften the cookies, which can then be added to soup or broth.


Additional restrictions will apply depending on why the diet was prescribed for you. If the diet is aimed at cleaning the intestines before the colonoscopy, you will be advised to avoid the use of red or purple gelatin or drinks. The dyes stain intestinal tissue and are often mistaken for blood under a microscope.

If you are tempted to include other full liquid diet options because you feel too limited, talk to your doctor before doing so. Although you will likely be prescribed a full liquid diet, there are times when the recommendations are weakened.


Following a totally liquid diet is a major change that will require adjustments, planning (both in terms of logistics and overall health), and integration into daily work, home, and family life.

Nutrition and general safety

Liquid diets are usually low in calories. The standard goal is around 1, 200 calories a day, but sometimes it can be less than 800. Although they are nutritionally balanced, careful planning is required. You may not feel hungry on a full liquid diet, but it usually does not contain enough fiber or essential vitamins and minerals.

A team of healthcare professionals will monitor you for weight loss and nutritional deficiencies that can occur with such a restricted diet. Doctors and a dietitian can help you create a diet with enough calories and nutrients to help you stay healthy. They will also recommend the supplements you need.


While there won't be the variety of diets most are used to with solid foods, you won't be completely limited to a liquid diet. Eating out with this meal plan is usually straightforward, although some items will need to be removed from the menu (for example, ordering soup, but not eating pieces of ingredients).

The cost

You may be able to save a little time by buying pre-ground foods, although fresh foods will be expensive (and in some cases, hard to find). You may find it cheaper to grind your food yourself at home.

Baby food is an option, but small portions are not enough for an adult. Use strained meats, vegetables, and baby fruits as a base for liquid meals.

Kitchen appliances that make it easy to prepare food for a liquid diet can be expensive. If the kitchen appliance is only necessary for the base of a liquid dish, you can find more affordable options on the Internet.

Side effects

If you have to follow a completely liquid diet for more than a few days, you will be constipated due to a lack of fiber. Your doctor will recommend adding an over-the-counter fiber powder, such as metamucil, to your liquid food.

It is also not uncommon to have frequent loose stools on a completely liquid diet, as there are no solid foods. When you begin to return to a solid diet, your gut should change accordingly.

Low calories and a lack of essential vitamins and minerals cause fatigue, irritability, depression, or general malaise.