Your analysis of the study in question is correct. Mice aren’t people — I agree. But you’re a little too dismissive of IF in general. It’s been documented beneficial for a number of things in humans, such as, for instance, reducing some side effects of certain chemotherapy regimens. Eating a crap diet then “fasting” for a day here and there obviously won’t do much for weight loss. But that’s not why most people use IF in my experience.