According to a new study, addiction to heroin or cocaine is partly due to the consequences of these substances on the brain

and in particular because they affect the ability of parts of it to communicate with each other.

The brain of an addict would contain less white matter than that of a person who does not use drugs.

However, it is this white substance that connects all parts of the brain together and helps to transmit the information necessary for its proper functioning.

Researchers from the Icahn School of Medicine at Mount Sinai in the United States, responsible for this new research, had already observed these consequences on rodents made addicts in the laboratory

however this is the first time that a study has been carried out with drug addicts. The habenula

American academics have studied the links between the prefrontal cortex,

a region that plays a vital role in our understanding of the risks and rewards of a stock

For this study, the researchers performed scans to examine the difference between the brains of healthy people and those of cocaine or heroin addicts.