It was only when I was halfway through reading an article about how fish can contain high levels of mercury and that some people should not eat very much of it, did I realize that at that very moment I was eating a tuna sandwich. Can you picture it? I'm sitting here munching away on my tuna while thoughtfully pondering this article. Here is my thought process: "hmm... isn't that interesting. Some fish can contain... Hey! Wait a minute!! I'm eating fish RIGHT NOW! What are the chances?"