Michael Tierra is author of the best selling Way of Herbs (Simon and Schuster, 1980; newest ed. 1998, which has sold over 450,000 copies), Planetary Herbology (Lotus Press, 1988); Biomagnetic Herbal Therapy (Lotus Press, 1997); The Way of Chinese Herbs (Simon and Schuster, 1998); Treating Cancer with Herbs (Lotus Press, 2003); and co-author with Candis Cantin of the Herbal Tarot (U.S. Games, 1988); his wife Lesley Tierra of Chinese Traditional Herbal Medicine Vol I & II (Lotus Press, 1998), with the late Dr. John Lust of the Natural Remedy Bible (Simon and Schuster, 2003); and with Karta Purkh Singh Khalsa of The Way of Ayurvedic Herbs (Simon and Schuster, 2008). Founder of the American Herbalist Guild (AHG) in the U.S., Michael is a California State licensed acupuncturist and herbalist OMD (Oriental Medical Doctor), with over 35 years of clinical practice. He is the formulator of Planetary Formulas and more herb products by various companies.