[a_136_chiffa]

> I really doubt this. I've been genotyped by 23andMe and the most interesting information I've seen from their health reports are a handful of disease probabilities and some fairly useless-to-me traits (like, for instance, a probabilistic view of my hair color).

This is about to change. The academic research going on is immense and GWAS studies coming in the 10 years will be characterizing everything - from your chance to develop cancer, to car crash or dropping out of school.

You need to be aware of what analyses of your data is being shown to you compared to what are possible and can be run in the background. It's a little bit like the Facebook telling things about you in ~2011 (your best friend is X) and then Cambridge Analytica pouring on it five years later to serve you ads that would best affect your voting pattern.