Go ahead and get your DNA tested with one of those kits if you want to, just know it could reveal information you may not want to know. Baylor College of Medicine researchers surveyed over 23,000 people who used genetic testing services such as Ancestry DNA and Family Tree DNA and found 82 percent said they learned about the identity of at least one genetic relative, and 61 percent found out something new about themselves or their relatives, including potentially unsettling information, such as the revelation they were adopted, or donor conceived. The study also revealed three percent learned that a person they thought was their biological parent was not, and five percent discovered they had previously unknown full or half siblings. Some respondents said their new knowledge had a positive impact on their lives, but a small percentage said the findings had a harmful effect on their lives and their sense of self. Researchers say going forward, mental and social support resources should be available to these individuals to help them cope with their experiences.