Mercury Contamination in Tuna

Natural Resources Defense Council provides the following table to guide people who regularly consume tuna:

If you weigh: Don't eat more than one can every: White Albacore Chunk Light 20 lbs 10 weeks 3 weeks 30 lbs 6 weeks 2 weeks 40 lbs 5 weeks 11 days 50 lbs 4 weeks 9 days 60 lbs 3 weeks 7 days 70 lbs 3 weeks 6 days 80 lbs 2 weeks 6 days 90 lbs 2 weeks 5 days 100 lbs 2 weeks 5 days 110 lbs 12 days 4 days 120 lbs 11 days 4 days 130 lbs 10 days 4 days 140 lbs 10 days 3 days 150+ lbs 9 days 3 days Source: Food and Drug Administration test results for mercury and fish, and the Environmental Protection Agency's determination of safe levels of mercury.

Additional information from FDA: http://www.fda.gov/Food/FoodSafety/Product-SpecificInformation/Seafood/FoodbornePathogensContaminants/Methylmercury/ucm115662.htm