> All I know is that the boomers of the family ate fat and sugar like it was going out of style, and lived in decent health to a ripe old age

That's a data point.

> while the fair-trade free-range organic millennials seem to be falling apart at the seams.

That's not a data point. That's a broad statement that generalizes about a population, and yes: It would be a good to see a source that indicates that an entire generation is "falling apart at the seams" either as a result of their preference for "fair trade free range organic" food or their avoidance of fat and sugar -- if, indeed, that is even true of the population in question.