Interesting, but fairly useless article. I have no idea what this means. Maybe this is a good thing? Fat is satiating and helps you feel full.

Also, a high-fat diet by implication means you've removed either protein or carbohydrate, if you're holding calories constant. A low carb diet, if low enough, puts your body in ketosis, and your brain switches from using glycogen for energy to ketones. For all we know the title could have been "A Low-Carb Diet Alters Crucial Aspects of Brain Dopamine Signaling."