I do not think that this is a good idea, for various reasons. 1) Letting peer pressure and self censorship to police our habits is the end of individuality and

I do not think that this is a good idea, for various reasons. 1) Letting peer pressure and self censorship to police our habits is the end of individuality and freedom. This is exactly what China is trying to achieve with that horrible social credit system. It also inverts the logic behind healthy practices: today you run because it makes you feel good; tomorrow you run because you can't afford to be left behind and lose insurance. This kind of thing really lowers the bar on the respect of privacy and dignity because it is basically large scale surveillance in exchange for cheaper insurance. Take car insurance: are you willing to give insurance companies full access to your GPS and tachometer data just so you can prove you're a good driver (in their own terms) and pay a little less? 2) What is healthy today might not be healthy tomorrow. Imagine some food is considered healthy in 2020, and you happen to eat lots of it, but in 2050 it turns out it's the other way around. And 3) this all boils down to the reason why, in general, associating people in groups and then judging individuals accordingly is unconstitutional in so many countries. That group may be gay people, black people, people that voted Left or some other group that you cannot leave or join because of some arbitrary definition. And is also worth considering that the group to which you belong can vote a change on its definition that leaves you out with no appeal, the worse case being some AI deciding that you're done.