LANSING, MI (AP) - Michigan is one of the top states in the U.S. with high levels of arsenic in ground water.
Now, new research shows drinking that water may lead to heart problems in young adults.
Researchers collected urine samples from more than 1300 healthy adults living in areas that rely on well water.
Those exposed to arsenic were 47% more likely to have a thickening of the left ventricle, which is the heart's main pumping chamber.
Experts say that thickening could increase the risk for future heart problems.
Scientists say it is important to test your water for arsenic if you use a private well.
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