It’s clear why direct-to-consumer tests for genetic cancer risk are a booming market. At-home tests are relatively affordable, and they offer the appealing possibility of a better understanding of one’s cancer risk on one’s own time, in one’s own space.

But despite their allure, experts warn that many direct-to-consumer genetic cancer risk tests promise more than they can actually deliver.

“People may experience un-needed anxiety or false reassurance,” says the National Cancer Institute (NCI). “Or they may make important decisions about medical treatment or care based on incomplete information.”

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