High Fat, Low Protein to Induce Ketosis

Truly ketogenic diets have recently lost much of the attention they received at the beginning of the 21st century. And today, many people refer to every low carb diet as "keto" or being "ketogenic". Research from scientists from Germany, however, have now found that ...

the absence of dietary carbohydrates per se does not induce ketosis. LC-HFDs [low carb high fat diets] must be high in fat, but also low in protein contents to be clearly ketogenic. Independent of the macronutrient composition, LC-HFD-induced weight loss is not due to increased EE and LA.

So probably few of those hardcore keto-dieters out there will eventually end up in "true" ketosis. A positive thing, if you asked me, because although I am a low carb guy, I am not a no carb guy ;-)