Mayo Clinic Radio: Juices and Lectins As people search for ways to eat healthier and lose weight, juicing, sometimes called a "juice cleanse" or "juice detox," has gained popularity. Juicing is a term that refers to combining fruits and/or vegetables in a juicer or juicing machine to turn them into juice. While juicing may help you get the five to nine recommended servings of fruits and vegetables each day, that alone is not a balanced diet. Plus, there are drawbacks to juicing, such as losing the healthy fiber most fruits and vegetables have when eaten.