My "food noise" in my brain slows down a lot when I reduce my carb intake. I tend to eat fewer calories when I'm not eating as many carbs from processed foods (including bread, pasta, white rice). If I limit my carb sources to higher fiber, higher protein foods, I tend to naturally eat significantly less, and can go a lot longer before feeling hungry.

I'm not sure how the insulin, leptin, ghrelin, and blood sugar levels play into all of it, but I know that I generally stop thinking about food as much when I'm not eating too many processed carbs.