Mark StenglerMark Stengler, N.M.D., is a licensed naturopathic medical doctor, the coauthor of Prescription for Drug Alternatives, and an expert in nutrition, herbal therapy, vitamin therapy, homeopathy, and integrative medicine. Dr. Stengler is the author of oneof our most popular health newsletters, Bottom Line Natural Healing; his website is www.markstengler.com. Read More Read Less