From Web MD:
Brain’s Response to Food
In the paper, the researchers present three brain processes that are associated with both overeating and obesity: food reward, inhibitory control, and time discounting.
Food reward, which includes both the pleasure of eating and the motivation to eat, has been linked to the same brain processes that control our urges for sex, gambling, and substance use. People with a greater reward sensitivity will likely have stronger food cravings, particularly for fatty and sweet foods, the researchers write.