Alan R. Gaby, MD, a Concord, New Hampshire–based specialist in nutritional medicine, past president of the American Holistic Medical Association and a former professor of nutrition at Bastyr University in Kenmore, Washington. He is author of the textbook Nutritional Medicine,available from his Web site, DoctorGaby.com.
Use our checklist to see how well you’re doing. If you take one or more dietary supplements, you may assume…