The link above brings you to a list of articles by Dr. Zoltan P. Rona. He graduated medical school and has a Master's Degree in Biochemistry and Clinical Nutrition. He's worked for the Canadian Holistic Medical Association and the Motherisk Program of the Department of Pharmacology of the Toronto Hospital for Sick Children. You might know him from his bestsellers, "The Joy of Health" and "Return to the Joy of Health".