As at-home DNA tests become more convenient and common, users are dealing with more questions about their origins and the emotional aftermath of their results, CNBC reported.
DNA tests sites such as AncesteryDNA and 23andMe expect more people than ever to have the DNA tests during the holidays.
Millions have already gotten tested. And for many of these people, the results are unexpected, shocking, and occasionally even life-changing, CNBC reported.
U.S. & World
The day's top national and international news.
CNBC spoke to a dozen people who took a DNA test to find out fun facts about their ethnic roots. Some were surprised to learn they were donor-conceived from fertility clinics.
Some bio-ethicists say DNA testing sites should educate their users about the risks and potential outcomes, CNBC reported.