Does insulin influence what we choose to eat?

As insulin increases in the brain, so does the amount of dopamine, suggesting that insulin plays a role in the reward system and may affect what we choose to eat.

Junk Food May Be More Appealing To Tired Brains

A new study that used brain scans of people who had not had enough sleep suggests junk food may be more appealing to tired brains. Scientists found that when normal weight volunteers looked at unhealthy food during a period of sleep restriction, the reward centers in their brains were more active than when they looked at the pictures after having slept regularly…