Cleansing is big businesses. Last year, consumers spent more than $100 million on supplements and fiber products for detoxifying, according to Schaumburg, Ill.-based market research firm SPINS. Yet the health and beauty section is only part of the picture when customers want to restore their systems.

From raw-food cleanses to juice fasts, there are also plenty of foods and beverages for detoxification, but helping consumers choose the best dietary option can be daunting. To help you steer inquiring minds in the right direction, here, nutritionists offer a side-by-side comparison of three popular food-based detoxes, and answer possible customer questions.