question about tuna

since i've been watching my carbs and protein intake so carefully since 'starting over', tuna has been a saving grace for me.  i love it!  especially the pre-drained individual sized pouches.  mmmm.  well, i eat at least 1 pouch daily and i'm wondering, should i be concerned about mercury content?  i'm asking because at least when your pregnant, tuna and other high mercury foods should be limited.  is there any effects to us as adults eating a diet somewhat high in mercury?  thanks!!

Here's the basic guidelines about fish consumption and mercury from the epa.gov website: 

1.  Do not eat Shark, Swordfish, King Mackerel, or Tilefish because they contain high levels of mercury.  2.  Eat up to 12 ounces (2 average meals) a week of a variety of fish and shellfish that are lower in mercury.  * Five of the most commonly eaten fish that are low in mercury are shrimp, canned light tuna, salmon, pollock, and catfish. *  Another commonly eaten fish, albacore ("white") tuna has more mercury than canned light tuna. So, when choosing your two meals of fish and shellfish, you may eat up to 6 ounces (one average meal) of albacore tuna per week.  3.  Check local advisories about the safety of fish caught by family and friends in your local lakes, rivers, and coastal areas. If no advice is available, eat up to 6 ounces (one average meal) per week of fish you catch from local waters, but don't consume any other fish during that week.  Here's a link to the site if you want more details - http://www.epa.gov/waterscience/fish/advice/