China's gene giant harvests data from millions of women

I'm sure some legal wonder-kid would make slight work of your 'opt-out' preferences when it's for some form of 'national security'.

Sure. Except that your three cousins opted in and they're 95% the same.

So, if they're all susceptible to breast cancer, your insurer can also assume that you are too.

Opt in vs forced is very different in my eyes.