I am wondering if there is actually mercury in cigarettes (I wouldn't be surprised, there is arsenic), or if smoking with amalgams in your mouth just increases the release of mercury from the amalgams because of the heat generated by the cigarette. I have read that Dr. Boyd Haley says any agitation or increase in temp causes an increase in release of mercury from amalgams. This is why people who chew gum, grind teeth, and drink lots of hot liquids (ie coffee/teas) get more mercury from their amalgams than those who don't.