Which delivers more mercury, dental amalgam or a tuna fish sandwich? 

By  G. Mark Richardson, Ph.D.
Risklogic Scientific Services Inc., Ottawa, ON CANADA



The debate concerning mercury (Hg) exposure from dental amalgam continues in North America (see, for example: Richardson et al., 2011; Richardson, in press). One response to this debate has been the assertion that one receives more mercury from eating a tuna fish sandwich than from dental amalgam fillings (Greger, 2012). Greger (2012) even suggests that a total of 29 amalgam-filled teeth are required to deliver the same mercury dose as eating 1 tuna fish sandwich per week. Of course, the validity of this assertion requires consideration of a number of factors and assumptions, none of which are defined or described by Greger (2012).

Read the whole article.