Also, not that you particularly exercised it here, but the whole what-did-cavepeople-eat argument is totally retarded. Cavepeople clearly could reproduce a fair amount of the time on the diet they had. That doesn't even a little bit mean that their diet was the diet people were 'designed for' or that that was even remotely related to their optimal diet.

(Which obviously doesn't necessarily mean that refined sugar is either good or bad.)

So we should all stop mentioning our ancestors when thinking about what to eat.