Craving carbs? Blame your brain, Japan study finds

TOKYO: Under pressure and gobbling pizza or chocolate? It may not be your fault, according to Japanese researchers who have isolated the neurons that drive a craving for carbs.

The team at Japan´s National Institute for Physiological Sciences found that activating neurons known to respond to social stress increased the appetite in mice for carbohydrates. Rodents with the neurons activated ate high-carbohydrate food at a rate of three times the mice under normal conditions. They also roughly halved their intake of high-fat food, the study found. The research is the first to demonstrate the way that the brain plays a role in the preference for carbohydrates or fats, said Yasuhiko Minokoshi, a scientist at the institute, who led the study. The teams said the study could help find a way to shift people away from gorging on sugary treats or unhealthy junk food. Humans generally select what to eat based on taste, as well as the nutritional state of the body, but the exact mechanism involved in the selection has remained largely a mystery.