Keep in mind with any diet should also have protein so i believe the cabbage diet is good a long as you have the proper amount of protein too.
Ingredients:

• 6 large green onions (1 bunch)

• 2 green bell peppers

• 1 or 2 cans of tomatoes (14.5 ounce size, diced or whole)

• 1 bunch celery, sliced

• 1/2 head cabbage, chopped

• 1 package (Lipton) onion soup mix

• 1 or 2 cubes bouillon (optional)

• 1 48 oz can V8 juice, or 6 cups water or light chicken or vegetable broth

• Season to taste with salt, pepper, parsley, curry, garlic powder, etc.*

Preparation:

Simmer or slow cook all until soup is done. *If slow cooking, add seasonings about an hour before done. Eat all the soup you want, whenever you want.