I saw this on FamilySearch yesterday – Mail-in DNA test results bring surprises about family history for many users – FamilySearch August 14, 2019: https://media.familysearch.org/mail-in-dna-test-results-bring-surprises-for-many-users/; original article: https://www.pewresearch.org/fact-tank/2019/08/06/mail-in-dna-test-results-bring-surprises-about-family-history-for-many-users/.
Summary (FamilySearch link)
About one-in-seven U.S. adults (15%) say they have used a mail-in DNA testing service from a company such as AncestryDNA or 23andMe, according to a new Pew Research Center survey. Most of them say they did so to learn more about their family origins, and a notable share say the results surprised them.
When asked about their reasons for using a mail-in DNA testing service, the vast majority of those who have done so (87%) say they wanted to learn more about where their family came from. About a third say they did so to get information about their health or family medical history (36%) and to connect with relatives they might have but didn’t know about (also 36%).