ToxFAQs for Cadmium This site on cadmium, in a "frequently asked questions" format, was produced by the Agency for Toxic Substances and Disease Registry (ATSDR), a division of the U.S. Department of Health and Human Services.
WebElements Periodic Table: Cadmium Includes extensive information on the chemical properties of cadmium, from the simple to the complex. Designed for students and for curious, somewhat science-savvy citizens.
Environmental Health Fact Sheet Cadmium. Illinois Department of Public Health. A fairly comprehensive fact sheet about where cadmium comes from, how it gets into people, and what it can do in the body. Question and answer format, with very understandable language
Cadmium Contamination of Food ExToxNet FAQs The ExToxNet is a widely respected collaborative effort by several universities across the country. This site documents and distributes information on all kinds of toxic substances, from fertilizers to metals.
Minerals/Cadmium HealthWorld Online This excerpt from "Staying Healthy with Nutrition: The Complete Guide to Diet and Nutritional Medicine" (by Dr. Elson M. Haas) focuses, again, on where cadmium comes from and what it can do.