No you didn't, unless you increased exercise or were already losing weight. You can not lose weight without being at a calorie deficit. Did you even count those calories before and after?

> Keto is explicitly not a calorie-based approach.

Neither are most diets. They all try to do the same thing: hope the person ends up eating fewer calories than they burn.

Keto helps people stay full with fewer calories. Intermittent fasting hopes that the person doesn't eat more calories in the short period of time they're allowed to eat.