> If I'm giving them my DNA, I want to know exactly how it can be used, how it will be anonymized, to whom they can sell it, whether I can opt out at some point, etc. ... one reason I haven't sent a DNA sample to 23andMe, etc., is because I can't control what happens to my data after that point, and I'm not even sure if I can find out.
https://www.23andme.com/privacy/#drawer-researchparticipatio...
Customers can opt in or opt out of our research at any time. If you opt out, we will discontinue using your information for research within 30 days.