I started to read the first article, but I got confused, so I watched the video. The latter is probably a poor substitute for the former, but assuming the video is accurate (as well as my understanding of it):<p>Insulin sensitivity seems to recover once the high-fat diet has been curtailed. That makes it a bit different from the usual course of insulin resistance, no?<p>Along the same lines, it seems to me that a LCHF (low carb, high fat) diet may solve its own problems. What I mean is that while the body may be slow to respond to blood sugar spikes, that situation should be occurring infrequently, if ever.<p>On the other hand, it makes me wonder if &quot;part-time keto&quot; may be worse than the alternatives. In a situation where you switch from keto to...whatever, I picture fat-laden cells unable to deal with the sudden onslaught of sugar.