A more recent study [1] showed it to be around 209-278 calories per day, and 308-478 calories per day in people who had high insulin secretion. The study also showed that a hormone that increases hunger decreased significantly on the low carbohydrate diet.

I'm currently on a lazy keto diet and am down 33 pounds. I know it's only one data point, but it definitely seems easier than other diets I've tried.

[1] https://www.hsph.harvard.edu/nutritionsource/2018/11/27/effe...