Carrie L'Esperance is an artist, writer, certified iridologist and permaculture designer who offers workshops at a rustic retreat and nature preserve in northern California. The author of The Seasonal Detox Diet, she has spent more than 35 years studying the healing systems of the world's cultures. She lives in San Francisco. Visit www.carrielesperance.com. Printed with permission from the publisher Inner Traditions International - www.InnerTraditions.com.