> Ketogenic diets can induce weight loss (20–23). In a 2020 meta-analysis of 38 studies lasting 6–12 months and including 6,499 participants, low-carbohydrate diets, defined here as <40% of energy from carbohydrate, led to a small weight loss, compared with low-fat diets, defined as <30% of energy from fat (mean difference −1.30 kg; 95% CI, −2.02 to −0.57), with considerable variability between individuals and between studies. More than half of included studies met criteria for a general ketogenic diet, as defined in Table 1, for part or all of the low-carbohydrate intervention (24).
Even `classic keto` as defined in their table allows for 10% of your calories from carbohydrates. If eating 2kcals/day, that's 50g of carbs.
In no way do the studies referred match what I've known as keto. The goal to me is accidental carbohydrates only.