[didibus]

> Poor research has real world consequences in this case (nutrition research), and we really need sound insight into what diet works best for the individual

I think your claim is unsubstantiated. You're for some reason under the belief that nutrition has a large impact on people's life expectancy and health, but I don't know what accurate experiment or data you're basing this off, while also pointing out that this research was not good enough.

All the nutrition studies are like this, and so if you disregard them, you're left with no reason to believe nutrition even affect health or life expectancy for the average person in the first place.