Let’s talk about the unique connection between our brain and our sweet tooth.

Our brain uses glucose, which is sugar, for fuel and when glucose levels start to dip, our brain’s reward centers make us crave sweets, trying to persuade us to consume more glucose.

At the same time, activity in the areas of the brain that control willpower, slow down. So there’s not much to override the impulse to grab a candy bar and inhale it!

Dr. Kathleen Page is a professor of medicine at USC, and she says the best way to resist the snack machine is to make sure those brain changes don’t occur in the first place!

That means we need to keep our glucose levels stable. And the easiest way is to do that is to make sure you have a healthy snack on hand mid-morning and mid-afternoon. Ideally, we should always have about 25 grams of glucose circulating in our bloodstream. Which is the amount of sugar in the average banana.

Another tip for controlling our sweet tooth: Try to eliminate simple carbs from your diet and focus on whole grains, instead.

According to The Journal of Nutrition, Health and Aging, complex carbs are digested much more slowly than regular carbs. So, they provide a steady stream of glucose, especially when you eat them with protein and a small amount of fat, like peanut butter on whole grain bread.