A few years does not prove a lifetime. If a million people ate your diet and lived X% longer than a similar set of people who didn't it might prove a useful sta

A few years does not prove a lifetime. If a million people ate your diet and lived X% longer than a similar set of people who didn't it might prove a useful stat. You might wind up dying of something not obvious today at 70 due to your diet, or not. No easy way to know. That's the problem of dietary knowledge.