3. Largest Source of Inorganic Mercury Exposure The Patient Asks "Are there other sources of mercury?" The ADA Answers "Absolutely, a major source of mercury exposure is from fish in the diet. . . . Research shows that you may be exposed to more mercury from fish than from dental amalgams." IAOMT Response The ADA answer is scientifically inaccurate and misleading. In contrast to the ADA position, it has been scientifically concluded that mercury/silver fillings constitutes the largest source of inorganic mercury exposure to the general population and this exposure exceeds organic mercury exposure from fish. 34 Autopsies of people with fillings confirm that dietary mercury exposure is apparently much less than from dental amalgam mercury. 35, 36 Authorities in the field of metal toxicology have concluded that this chronic exposure from dental fillings makes the predominant contribution of human exposure to mercury.37