Sushi Mercury Levels Wayyyyyyy High

I guess it's just as well that I stopped eating sushi. Recent laboratory tests in New York found so much mercury in tuna sushi that two or three pieces a week at some restaurants could be a health hazard. Eight out of the 44 pieces of sushi purchased by the New York Times for testing had mercury levels so high that the FDA could take legal action to remove the fish from the market.
( from the International Herald Tribune January 22, 2008 )

Biochemistry: Reactive Oxygen Species and Detox Mechanisms

Free radical = a solitary electron in a shell on an atom, looking for a partner. Very reactive, and can steal partners from other atoms and injure cells.
( on free radicals, antioxidants and detoxing )