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About the Columnist:
Karta Purkh Singh Khalsa, DN-C, RH, is one of the foremost herbal experts in the field today. He is a co-author of the popular book Herbal Defense, an accomplished author, teacher and lecturer. He has taught hundreds of classes, and has written countless articles for a wide variety of publications, including Herb Quarterly. Visit his website at www.kpkhalsa.com.