got this from CompuServe news

By Cathryn Conroy, CompuServe News Editor
If you love fish and eat it frequently, look out! Fully 89 percent of
Californians who eat fish for lunch and dinner have elevated mercury levels,
according to a study conducted by San Francisco internist Dr. Jane Hightower
and presented at a symposium of environmental health experts in Vermont.
Obviously, eating fish twice a day on a regular basis is far more than the
Environmental Protection Agency recommendation, which is two servings a week.
On the other hand, fish is good for us! Many kinds are packed with
heart-protecting Omega 3 fatty acids. But doctors are increasingly concerned
that there are real risks associated with eating too much fish, Reuters
reports. <A HREF="http://member.compuserve.com/wrap/linker.jsp?floc=cs-wnew&ref=http://www.time.com/time/covers/1101020121/salmon.html">This is one of the safest kinds of fish to eat! Click to find out
what it is.</A> High levels of mercury actually damage the nervous system,
especially in children and fetuses, which is why the Food and Drug
Administration recommends that young children and pregnant women limit their
fish intake to two 6-ounce cans of tuna each week if that is all the fish
they eat or one can of tuna if they eat other fish. In addition, they should
avoid eating swordfish, shark, king mackerel, and tilefish. So how much
mercury-tainted fish can cause health problems? That is the question
scientists are still struggling to answer. Hightower's peer-reviewed study
will be published in November in the journal Environmental Health
Perspectives.