I didn't find any published report, only a video of a person doing a poster presentation , which isn't enough to go on. I'm unsure of what, scientifically speaking, is your point. Is it your post here at Reddit that you're referring to?
The environmental impact of a ketogenic diet is not the even peripherally the focus of the OP (opening post) and, in any event, I don't see it as a significant issue.
Try this:
http://www.medpagetoday.com/cardiology/prevention/59018
I know that you did not mention the environment in the OP. My point was that it needs to be mentioned. The global environmental impact of high-meat diets, across large populations, needs to be mentioned, because it is important. If billions were to adopt such diets, the effect would be ruinous. Pretty important, I would say.
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