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GOLDEN VALLEY, Minn. - Radon is the second leading cause of lung cancer in the United States, responsible for more than 20,000 lung cancer deaths each year.

But because you can't see it, immediate health problems caused by radon may take years to show up.

That's why it's important to have your home tested.

Dan Tranter with the Indoor Air Unit at theMinnesota Health Department joined KARE 11 Sunrise to talk about radon testing as part of public health week.