How to Feel Full on a Liquid Diet

While liquid diets can be useful for a number of health conditions, their limitations pose nutritional and culinary challenges. Fruit and vegetable juices and smoothies will provide some key vitamins and minerals, but aren't likely to fill you up for long. To make liquid meals more filling, include liquified foods that are rich in protein, fiber, and fat — options like avocado, nut butters, beans, and dairy or dairy substitutes will all help you feel less hungry. Fat, fiber, and protein all help keep you full for longer by slowing down digestion, and feeling satiated makes it more likely that you'll be able to stick with your dietary plan.

Add Some Avocado

Avocados are rich in healthy and filling unsaturated fats, with 4.9 grams (g) of monounsaturated fat and 0.91 g polyunsaturated fat in each 50 g serving (about one-third of a medium avocado), according to the U.S. Department of Agriculture.

You can use avocado to make both sweet and savory liquid meals. Try out this avocado-berry smoothie recipe from the Dana-Farber Cancer Institute by blending avocado, ice, peach nectar, blueberries, strawberries, yogurt, cinnamon, and vanilla extract. For something savory, create a simple soup like a blended avocado, asparagus, and spinach soup seasoned with herbs. The Cleveland Clinic's recipe is packed with antioxidants and fiber in addition to healthy fats. Also look for recipes popular among Spanish, Mexican, and Southeast Asian cuisines, which frequently use avocado.

Mix in Dairy Products or Plant-Based Dairy Substitutes

Regular dairy products are rich in both protein and fat, according to the U.S. Department of Agriculture, which can help you feel full even on a liquid diet. Try adding milk, yogurt, or cream to smoothies or soups to keep hunger at bay.

If you do not or cannot drink dairy products, look for milk substitutes made from soy, nuts, rice, or coconut. The nutritional profile of these beverages are not, however, identical to dairy milk, says the U.S. Department of Agriculture. Rice milk, for example, is mostly carbohydrates, while coconut-based milk substitutes are mostly fat.

Get Creative With Fruit

Fruit is a smoothie staple, but you can also use fruit to make soup. Fruit-based soups tend to be thinner than smoothies and often contain herbs or spices. This savory curried pumpkin soup from La Clinica combines the fruit with warming spices, coconut milk, and apple. Other fruit soups are usually served chilled and are best suited to warmer months, when fresh and flavorful in-season fruit is at its peak.

Eat Your Vegetables

Create endless variety in soups with different vegetables. Vegetables contain fiber, which helps keep you full longer. Beans are especially high in fiber, according to the U.S. Department of Agriculture, and blend easily into creamy soups that you can water down to your desired consistency.

You can make more filling soups by adding dairy, olive oil, or coconut milk. Recipes for pureed soups abound from all over the world. Try cream of tomato, creamy cucumber, Mexican lime, Spanish gazpacho, dilled potato, sweet carrot, or pureed white bean. You can also try this black bean soup topped with cilantro and yogurt from Main Line Health.

Explore Nut and Seed Butters

Nut butters are rich in protein and healthy fat, according to the U.S. Department of Agriculture, which helps fill you up. Blend them into sweet smoothies or savory soups. Get beyond peanut butter by experimenting with almond butter, cashew butter, walnut butter, sunflower seed butter, tahini (made from sesame seeds), or pumpkin seed butter. Try this blueberry cashew butter smoothie from Elizabeth Harris Nutrition & Wellness for breakfast.

For nut-based soup recipes, look to the cuisines of India, Southeast Asia, and Africa, or at recipes created by raw food enthusiasts. This creamy hazelnut soup recipe from West Coast Kitchen Garden, based on similar soups from France and Spain, also fits the bill. Keep in mind that pretty much any soup can be pureed, even if the recipe doesn't say so.