The Michigan Department of Community Health has issued an updated fish advisory with recommendations on how to reduce risks associated with eating fish from inland lakes, rivers and the Great Lakes.
The “2009 Michigan Family Fish Consumption Guide: Important Facts to Know If You Eat Michigan Fish” advises women of childbearing age and children under 15 “to be extra careful before eating certain types of fish in Michigan,” and urges people to learn about local advisories before fishing.
Many chemicals end up in lakes, rivers, oceans and in some of the fish we eat. Eating polluted fish won’t make you sick right away. But the chemicals found in fish can build up in your body and make you very sick later on. Some of these chemicals can harm your immune system, reproductive system, brain functions, or increase your risk of cancer. Children and babies that get too much of these chemicals may develop physical, mental or behavioral problems that they would not have had otherwise.
Some of the chemicals of greatest concern include PCBs, dioxin and mercury. PCBs and dioxin accumulate in fatty tissue, so risk of exposure to these chemicals can be reduced if people remove fat from the fish and cook them in a way that allows fat to drip off the meat. Mercury collects in fish flesh. Larger fish and fish that eat other fish tend to be most contaminated.
The MDCH advisory is based on data collected by the fish monitoring program of the Department of Environmental Quality.
Alhough the state issues advisories about consumption of sport caught Michigan fish, commercially harvested Great Lakes fish are sold without warnings.