Sam Phillips wanted to know if he was Jewish.
Karen Cox-Dennis wanted clues as to why she was diagnosed with diabetes at the age of 48.
Jeff Haan, who was adopted, wanted to know his ethnic makeup.
And Dave Austin wanted to know why the heck someone came to his stepmother's door, claiming to be his long-lost half-brother.
Four strangers took mail-in DNA test kits for different reasons.
All of them found out something unexpected: They are related.
DNA tests are rising in popularity, even as concerns about privacy and accuracy trouble users. AncestryDNA, perhaps the most ubiquitous brand, sold 1.5 million kits last holiday season, tripling its sales from a year ago. It now has more than 7 million users in its database. 23andMe stocks its kits in the pharmacy aisles of Target and Walgreens, making a purchase as easy as buying Band-Aids.
With so many people sending away their DNA, there are bound to be consequences. Almost as soon as these saliva-collecting kits arrived in mailboxes, stories started popping up in the news media and social media. Stories of families being brought together — or torn apart — by revelations of infidelity, adoption or even switches at birth. Stories of people whose need to know the truth outweighed the risks of exposing the mysteries in their genetic code.