How does methamphetamine take over ones life?
Methamphetamine short-circuits a person’s survival system by artificially stimulating the reward center, or pleasure areas in the brain. This leads to increased confidence in meth and less confidence in the normal rewards of life. This happens on a physical level at first, then it affects the user psychologically. The result is decreased interest in other aspects of life while reliance and interest in meth increases. In one study, laboratory animals pressed levers to release methamphetamine into their blood stream rather than eat, mate, or satisfy other natural drives. The animals died of starvation while giving themselves methamphetamine even though food was available.