We have long been told a simple story about reward: Dopamine is the "wanting" molecule that drives us toward goals, and ...

Since the 1970s, the global trend of obesity has been steadily increasing, earning it the designation of a 21st-century epidemic. Obesity is the main risk factor for various serious health conditions, ...

In the human brain, the hormone insulin also acts on the most important neurotransmitter for the reward system, dopamine. Insulin lowers the dopamine level in a specific region of the brain (striatum) ...

Using computational models, the researchers studied how the brain's reward-learning system functions in those with depression, especially among individuals experiencing anhedonia, the inability to ...