http://authoritynutrition.com/12-graphs ... e-get-fat/
I want to point out that sugar consumption didn't have to be at zero to have the population to be slim. Average weight stayed relatively low until the consumption started going up over roughly 50 kg. a year. I'm not suggesting anyone aim at eating that much! There are reasons other than overweight to keep refined sugar consumption much lower than that. It's a culprit, but trying to completely eliminate the culprit is not necessary nor statistically sustainable, even if it would be ideal.
Regarding chart 10 that includes upped intake on weekends, it's associated with social eating. Be reminded that eventually, S days are meant to look much like N days. Besides, in what society is is typical for individuals to eat alone? I don't think we should aim to shun society but to induce society to get less fixated on eating a lot and reinforce each other to enjoy moderation most of the time, as we do here.

I was quite surprised by how low the butter consumption was even at its height in the first half of the 20th century. It averaged less than a tablespoon a day! Even adding all the fats together, they still accounted for only a few hundred calories a day of added fat. Whole milk use and use of fattier parts of meat than the average dieter will allow herself upped the intake, but overall calorie intake still kept people leaner, I assume. And look at the 50s! Added fat played a very small role in the diet.
So, here's to using No S to enjoy the holiday eating- in moderation.
If you have the time, have fun making your own observations.