Do popular DNA tests like 23andMe, Ancestry actually work?

At-home genetic tests like Ancestry and 23andMe are all the rage right now, with customers claiming the products have helped them discover surprising geographic roots or predict their risk of getting certain diseases.

While the services are gaining popularity, some leading scientists still warn the reports too often lend "vague" and potentially misleading information.

Dr. Michael Zwick, an associate professor at Emory University's Departments of Human Genetics and Pediatrics and assistant dean of research at Emory's School of Medicine, is quoted. He is also a faculty member in the GMB and PBEE programs.

Click here to view the full story in Atlanta Journal-Constitution.