Courtesy of http://donttrack.us:

"Life insurers are testing an intensely personal new use for the vast dossiers of data being amassed about Americans: predicting people's longevity.”

http://online.wsj.com/article/SB1000142405274870464860457562...

It was just a pilot test, but that was three years ago, so who knows where is now.

This link has nothing to do with your original scenario of googling for "testicular cancer" and subsequently getting denied for insurance or a mortgage. It's about social media. Social media != anonymized search data.

There is a huge difference between publicly stating for the whole world to see that you have cancer by posting it to Facebook and searching google and browsing webmd and an insurer somehow surfacing that search and browsing intent and then acting on it. You backed up nothing.

google tracking != anonymized search data

It was meant to be taken as literal case. Just as example of how it will be used.