[fasteo]

OP here. Fully agree. I do 2-3 keto cycles (5 weeks) per year. Not against keto diet.

But note that the context of this study is healthspan and mortality, not athletic performance, weight loss, etc.

It was just warning that this study does not warrant that keto diet is good for your health in the long term. The title is a bit misleading.

[XFrequentist]

Fair to say the study results themselves (as opposed to the authors' assertion quoted in the gp) don't really pertain to the health effect of low carb/keto, at all (ie null rather than evidence for or against)?