Understanding why we always have room for dessert could lead to new treatments for obesity, researchers have revealed.

It offers intricate images of the ... And PET scan or Positron Emission Tomography is used really to detect the activity of your brain indicated by how much sugar different parts of your brain ...

By analyzing brain scans of recovering cocaine addicts ... When she showed images such as the one of cocaine on the left screen to patients for 33 milliseconds, their reward circuitry was stimulated.