The Cabbage Soup Diet has never been studied, so it's impossible to confirm its effectiveness. While it may result in temporary, short-term weight loss, it is unlikely to lead to sustainable weight loss. Because the Cabbage Soup Diet is very low in calories, it will likely result in short-term weight loss.

Most variations of this diet suggest that people eat this soup two to three times a day, although some variations enable the participants to consume even more of the soup. The cabbage soup used in this diet combines ingredients like broth, nonstarchy vegetables, pepper, herbs and, of course, cabbage.