They will most likely share metadata about you with facebook to sell that data to push more ads into your face.
They may very well sell also data to insurance companies making it harder for you to get insurance.
Options are limited only by who would like to pay for info about you.
Its rather a question about “How much you value your privacy?”
Ps. Ppl using facebook from the go “do not care about their privacy” so I dont know how much more it will affect you.