Mercury Poisoning?

My mother approached me with a news story she'd recently read regarding a rather high profile case of mercury poisoning - she was concerned that my diet in Japan, primarily consisting of seafood, would put me at a similar risk. My initial reaction was 'No, I don't plan to eat fatty fish at every meal', but apparently it's a more widespread problem than I was aware of.

Variety is the spice of life, as they say, and if you eat too much of the same thing it's bound to catch up with you sooner or later. As a sidenote, I suspect this 'choice of foods' topic will be revisited in the next few months, as A, M, and L all happen to be vegetarians. (or pescetarian, as the case may be) There are certain things I'm a little squeamish about trying, but provided it's actual food (not Fear Factor pickled livestock testicles type stuff) and not going to make me pathologically sick (raw foods with questionable storage quality), I'll try anything once! I'm curious to see just how often my culinary courage will be tested.