There is a chance you heard that people need to detox once in a while to clean the body from toxins and heal it. Proponents of detox diets believe that we need this cleanse because a modern person's life abounds with pollution, junk food, cigarette smoke, alcohol, and others. Juice cleanse, also called juice fast, is a short-term detox diet based on drinking fruit and vegetable juices. Advocates of this detox diet state that it can help you clean the body from toxins, help you lose weight, and boost immunity and gut health. However, the listed claims are not research-based.