Should be a fit battle, but doubt it'd be judged fairly.
You really are crazy if you think avoiding mercury's crazy.
Seafood's negligible compared to amalgam exposure: http://youtu.be/hqIdGwAMxxs?t=4m8s
But you're insane to eat any Pacific tuna now because every one caught and tested off California has been positive for radionuclides from Daiichi which has around 5000 tons of fuel rods total including melt through reactor cores and freshly "spent" holding pools compared to paltry 170 tons that Chernobyl had when it blew. You don't even want to know the land and water contamination of northern Japan including Tokyo. I can never go back to my hometown, it was destroyed by the tsunami anyways.
Well I don't have my vaccinations (because autism) I don't go to the dentist because mercury, I don't go to the doctor because they're just out to make money, and by golly it's great.
I'm so fucking healthy it's fantastic. I have the life-expectancy of the cavemen I eat like, and I feel good all the time.