But these new studies aren't without issues. Apple isn't even sure if consumers will want their genetic data. Though companies like 23andMe have thrived on revealing consumers' ancestry, Apple does not yet have a platform for doing so, and at the moment consumers don't have many practical applications for knowing more about their genes. Additionally, study participants don't have a good idea of where their data could end up. Though there are some restrictions on where research institutions can send data, there's nothing stopping them from sending genetic information to other institutions. Also, the FDA regulates what individuals can be told about their DNA, especially without a genetic counselor present. "There is tension in figuring out what is okay as part of our research study and what would be okay in terms of health care," Goncalo Abecasis, a geneticist at the University of Michigan who is running a similar study using Facebook, told MIT Tech Review. "You can imagine that a lot of people have a good idea how to interpret the DNA… but what is appropriate to disclose isn't clear."