"Mercury toxicity" refers to the harmful effects that occur when a person is exposed to high amounts of mercury, which is a heavy metal that can be poisonous to the body. Full definition
How to eat fish 3 times a week and not get mercury toxicity? (perfecthealthdiet.com)
These little fish are packed with nutrients including Omega - 3's and selenium which apparently can protect you against mercury toxicity. (homemademommy.net)
It's true that there's some concern about mercury toxicity from fish. (wellnessmama.com)