In part 1, we saw that the dietary guidelines, which are blamed by low-carbohydrate diet advocates for the obesity epidemic, are essentially the same around the world, despite widely varying rates of obesity.

But to the original post, nutrition scientist John Speakman articulated the following criticism:

In response, I pulled out just a little more of my own hair, bringing myself that much closer to that beautiful shiny dome that I anticipate someday awaits me. For, this is precisely the criticism that I had formulated to myself–and was hoping nobody, most of all not a scientist like John Speakman–would bring up.

Alas, I was caught red-handed in the act of releasing an analysis that did not include quite the number of necessary controls to be completely persuasive to the skeptic. And now I would need to buttress this analysis with another, which I was not sure I had the resources to produce. And yet, with the help of my growing volunteer team, we did just that:

If the guidelines caused obesity, one would expect that the longer a country has had dietary guidelines, the higher the rate of obesity. But looking at the obesity prevalence of 72 countries vs. time since implementation of the dietary guidelines, we find that such a relationship does not exist.

This suggests that the dietary guidelines–which are essentially the same around the world–do not have any impact on the rate of obesity.

Here is a look at the spreadsheet we put together to do this analysis. We checked and re-checked using multiple sources the time since the implementation of guidelines. Data available upon request.

Credit goes to Marco and @byrnetree for compiling the data. Thank you!

If you would like to volunteer for projects like this (and much more), hop on our Discord and keep your eyes peeled.

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