The USDA's new Food Guide Pyramid, recommends we eat 3-5 servings of vegetables a day. Eating more green salads can help achieve this daily dietary goal. And, one cup of packed raw greens counts as one serving, so you don't need to worry about large portions. Iceberg lettuce, that colorless, compact bowling ball, doesn't score well as a vegetable full of nutrition. Iceberg lettuce is cholesterol and fat free and very low in calories, but so are all the other salads greens.
Iceberg lettuce is rich in one thing-water.
But it's not high in vitamins, minerals or even dietary fiber.