| Through experiment, researchers in United States | | | | said:"We believe that the hunger hormone would make |
| University of Texas Southwestern Medical Center | | | | mice go looking for high-calorie foods, because they |
| have found that a material called hunger hormone | | | | remember how delicious it is. Even if there is no food |
| make the mice find food to eat under the case of not | | | | inside, it does not matter, mice still believe it can cause |
| hungry. Researchers built two houses for mice, one is | | | | some kind of pleasure associated with the existence |
| striped walls which placed delicious high-calorie food | | | | of things." there are commons in brain cells connected, |
| inside the cabin, the other is gray walls which placed | | | | hormone type and brain "pleasure center" between |
| small low-calorie foods. After repeated training, mice | | | | human and mouse. |
| have remembered where the house for what it was. | | | | However, the "hunger hormone" is not the only reason |
| Then, the researchers feed the mice so that they | | | | for non-stop eating. Other factors may also cause |
| choose a hut to enter. The results showed that mice | | | | people to over-eating. For example, the firs factor is |
| injected the "hunger hormone" are more likely to enter | | | | gene. A gene called GAD2 was found by Imperial |
| the striped walls cabin, even if there is no food in the | | | | College London researchers in 2003, which easily lead |
| cabin. But mice which were not injected the "hunger | | | | to obesity. These genes will accelerate a |
| hormone" showed no preference. Jeffrey Zigman, vice | | | | neurotransmitter synthesis in the brain so as to |
| Professor of this experiment, said:" Our research | | | | stimulate people to eat. The next factor is the level of |
| showed that this hormone may affect associated with | | | | dopamine, a study published on Behavioral |
| the consumption-related behavior, which led to | | | | Neuroscience magazine in 2007 point that people with |
| over-eating." The words were quoted by Fun Science | | | | low levels of dopamine were more likely to seek |
| Site. | | | | pleasure and eat too much. Finally, the third reason is |
| Zigman considered that the "hunger hormone" may | | | | psychological factor. A common phenomenon is that a |
| produce the extra desire for food." Mice's behavior | | | | lot of frustrated people would eat large numbers of |
| has nothing to eat food, just to get more pleasure." he | | | | food. |
| explained. Mario Peirello, another charger of this study, | | | | |