[otabdeveloper4]

The one that has white flour/rice and sugar as the main staples. You know what I mean; it's cross-cultural now, like tobacco smoking.

[adrianN]

The diets in the "Blue Zones" feature those as staples as well. I somehow don't think that they're terribly unhealthy. Grains have been staples for millennia by now.

[otabdeveloper4]

The bread we eat now and the bread we ate 150 years ago are very different breads.

The modern stuff is refined flour and sugar.