More than 12 million people have had their DNA analyzed with direct-to-consumer genetic genealogy tests, according to estimates from the industry, with use of tests from companies such as AncestryDNA doubling in 2017. These and other DTC laboratory tests—often conducted without the involvement of a physician, with results reported directly to the patient—may lead patients to potentially harmful misunderstandings.

My latest at AMA Wire. The whole shebang.