10 Most Addictive Drugs In the World

Page 7 of 11

No. 5 Methamphetamine or Crystal meth

Dependency Rate: 2.24

Chemically developed, Methamphetamine mimics the effects of dopamine and norepinephrine, the neurotransmitter responsible for feelings of adrenaline. This drug has a negative feedback loop, and its sustained usage can cause neurons to release high levels of these two substances, saturating the brain. Eventually, the natural adrenaline production can be suppressed by methamphetamine, making its dependency extremely strong.

Page 7 of 11