Hi, Nancy. It's probably too much. I have taken to buying Tongol Tuna for Rich. At one point, I thoght he was llking raeally unwell and I came to the conclusion I was killing him with the convenience of tuna for dinner when he worked late. They are labelled chunk light in the U.S. but they are the finest quality. They are small tuna and that reduces the mercury content dramatically. They are line caught off the shores of Thailand and they are sustainable.
Here's a link to another resource for safer tuna:
http://www.eurocbc.org/lower_hg_jig...core_tuna_env_friendly_04apr2004page1566.html
Here's an article regarding fish and mercury.
Fish and Mercury Poisoning
A peer-reviewed study, slated for publication Nov. 1 in the journal Environmental Health Perspectives, of Californians who ate fish shows 89 percent wound up with elevated mercury levels in their bodies. The study, presented at a symposium of environmental health experts in Vermont, is one of the first studies to document mercury levels in Americans who eat fish. It is widely beleived that fish is a high quality protein source loaded with heart-protecting Omega 3 fatty acids (also found in seeds like flax seed). Researchers tested the mercury levels of patients who reported eating more than two servings of fish a week, the maximum the EPA recommends for pregnant women and small children. The tests showed that 89 percent of 116 patients tested showed mercury levels greater than the 5 parts per million recognized as safe by the National Academy of Sciences. Of that group, 63 people had blood mercury levels more than twice the recommended level and 19 showed blood mercury levels four times the level considered safe. Four people had mercury levels 10 times as high as the government recommends. The study monitored 67 patients as they reduced their fish intake and subsequently their bodies' mercury levels. Within 41 weeks, all but two had reduced their blood mercury levels to below government-recommended thresholds. About 78 percent of patients with high mercury levels reported eating canned tuna more than three times a month; 74 percent ate salmon more than four times a month; and 72 percent said they had swordfish more than once a month. Other fish commonly eaten by the patients included halibut, ahi, sea bass and sushi.
Source: The primary sources cited above, New York Times (NYT), Washington Post (WP), Mercury News, Bayarea.com, Intellihealthnews, Deccan Chronicle (DC), the Hindu, Hindustan Times, Times of India, AP, Reuters, AFP, womenfitness.com etc.
Bobbi
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Tell me, what it is you plan to do with your one wild and precious life? -Mary Oliver