Recent research found that a certain part of brain is essential for experiencing craving for drug. Experts hope that further researches will discover medicines that would decrease this craving.

Part of the brain that is responsible for body’s needs and emotions lies deep in the brain and it’s called insular cortex. During the research, scientists injected a chemical into the brain of experimental rats addicted to amphetamine and this chemical stopped activity of insular cortex.

In the beginning of experiment rats had a choice of entering two rooms. One of them was bright and had amphetamines on tap and the other one was dark with salty water on tap. Rats addicted to amphetamine preferred the light one even though rats usually prefer dark places. After that, when their insula had been “unplugged” by chemicals they preferred dark room again.

Researchers showed that insula has great importance in transmitting a feeling of general malaise to the rest of the brain. They injected another drug in rats that has ability to make animals stop moving but rats who previously received injection that blocks insula behaved normally. This all leads to idea that insula is preventing withdrawal symptoms in animals addicted to drug. So, the function of insula isn’t just to inform the brain about craving but also it may be the key structure in making decisions by informing the executive part of the brain about our needs.

Experts agree that this kind of treatment might be used in humans in the near future to stop drug craving in drug addicts.