Heroin addiction is not always easy to identify, because the signs are not always visible to the eye. A type of opioid, heroin is extremely powerful made from morphine, which affects the reward center part of the brain.

Major health problems from heroin include miscarriages, heart infections, and death from overdose. People who inject the drug also risk getting infectious diseases, including HIV/AIDS and hepatitis.

In normal circumstances, the brain releases these chemicals to reward behavior necessary for survival, like eating and helping people cope with pain. The brain quickly links heroin to the activation of these chemicals in the brain reward system. Eventually, the user becomes addicted and can’t function without the drug.

Research has shown, that out of everyone who tries heroin for the first time, nearly one in four people become addicted.

Regular use of heroin can lead to tolerance. This means users need more and more drugs to have the same effect. At higher doses over time, the body becomes dependent on heroin. If dependent users stop heroin, they have withdrawal symptoms, including include restlessness, muscle and bone pain, diarrhea and vomiting, and cold flashes with goosebumps.