I recently came across some information on these companies that are busy collecting DNA samples from the population in the hope of helping you find out more about yourself.
As you'd expect, these companies are owned by people with ulterior motives, your DNA data will probably end up in places you had not anticipated and in the end, it'll all feed into the control matrix that is materialising all around us. The other thing about it is that by submitting your DNA, you essentially also give them the keys to those related to you who haven't submitted their DNA.... so as you've guessed it, for the price of you getting to know a little bit about yourself, they get to know a whole bunch about you and those related to you... plus in the background they can combine this data with a whole bunch of other data they have e.g. from social media, from all the tracking software on your smart devices etc to build an even more complete picture of you, your family etc etc.
All scary stuff really
and
How private should your DNA be? Should you have a say in how your DNA is used and who should have access to it?
Google is also operating in this space... if that's not enough to terrify you, then nothing is!