[anonym29]

The study you linked to defines the "high fat diet" as 55 % fat/25 % saturated fat/27 % carbohydrate.

Besides the fact that these figures add up to 107%, 27% of a 2000 kcal/d diet is 540 calories. At 4 calories per gram of carbohydrates, that works out to 135g of carbohydrates. Even if they were only eating 1200 kcal/d, that's still 81g of carbs.

Most ketogenic diets recommend no more than 20g of net carbohydrates per day (net carbs = total carbs - fiber - certain sugar alcohols).

This study may be valid, but I'd bet money there wasn't a single participant actually in a state of ketosis for this study, which makes it moot as a response to the parent comment you're refuting, which specifically mentions ketosis, not just a "high fat diet" that also contains 80g+ of carbs daily.