Liquid diet: The Liquid diet is the restriction of solid food intake, and replacement of solid food with liquids. In hospitals, liquid diets are prescribed by doctors for a number of reasons for patients who are unable to consume solid foods. Liquid diets may be prescribed following surgery or as a preparation for certain medical procedures. Additionally, some people have injuries or medical conditions that limit their ability to eat solid foods. Most prescribed liquid diets allow sports drinks, broth, tea, and coffee. Strained juices may also be permitted.
In terms of weight loss, various diet plans have been developed that may be termed "liquid diets," since these involve replacing all or part of one's food consumption with liquids. These diets may include specifically formulated diet drinks or may be based upon consumption of teas and juices. Many liquid diets may not be nutritionally sound and safe for long-term weight loss.