Discover the importance of detoxification with raw food entrepreneur, Karyn Calabrese. Nature's Healing System is a popular 28-day program designed to counter the effects of exposure to chemicals, pollution, and stress. Featured at Karyn's health spa in Chicago, readers are guided through an at-home, step-by-step course that incorporates a raw diet, juicing, fasting and internal cleansing to restore the body's balance and revive its ability to rejuvenate naturally.