I'm all for optimizing the last 20%, but unless I'm mistaken, in America, ~80% of this is due to a sedentary lifestyle. And that bias arises from knowing peopl

I'm all for optimizing the last 20%, but unless I'm mistaken, in America, ~80% of this is due to a sedentary lifestyle. And that bias arises from knowing people genetically predisposed to type 2 who have close relatives who died young from it, yet persuading them to exercise is like pulling teeth. Which is to say while I think you could build a billion dollar company out of that last 20% (and you can correct me on the percentages here, really, please do so), it would have to not only provide such information, but also present it in such a way that the recipient got up and did something with it. And that's the hard part, no?