Related: Struggling auto parts chain closing down all stores but one That's because the average cost of a fast-food meal — or any meal, for that matter —has risen in cost over the past several months.

From fries to soda, these fast-food items hijack your brain's pleasure center and make you crave them nonstop.

Taco Bell is known for its affordable prices, even when compared to other fast food chains. Here are the most expensive and ...