Why Is Heroin So Addictive?

They say heroin is so addictive because of the high that they get from the opiates that are in heroin. Even used one time can make a person to crave more. Stay away from this drug. It will ruin your life because all you want to do in life is get this drug.

Heroin is a drug which is derived from an opiate and this is why it is so addictive.  It effectively mimics the action of the chemicals in the brain which are mood enhancing (and natural pain killers).  So if heroin is taken the body and the brain become addicted.  When heroin is used over a long time, then the brain can stop producing endorphins and so if heroin use stops, the symptoms can involve cramps, tremors and even seizures, coma or death.
It is thought that heroin can become addictive even after a single dose.  Long term use of heroin can lead to many social and health problems, including breakdown of relationships and brain tumours.  Methadone is often used to treat heroin addiction, since it can replicate the effects of heroin and the dose administered can be gradually reduced.  However, users can even become addicted to methadone, due to the fact that even this substance is so strong.