There are two things that are common in addictive drugs. Initially they produce a pleasurable effect, followed by a rebound unpleasant effect. Through its stimulant effects, an amphetamine produces a positive feeling, but when it wears off it leaves a person with the conflicting feelings. This is because of the suppression by the drug of the normal production of adrenaline. Now, a chemical imbalance is created and the result is irritability that physically demands more of the drug to go back to normal and feel good again. This pleasure/tension cycle leads to loss of control over amphetamines–and addiction.Amphetamine causes strokes, heart attacks
These brain cells represent a simplified way of looking at the BRAIN’S REWARD SYSTEM On the left we see the various drives and needs of the body; sex, hunger, thirst and friendship. When these drives are satisfied, or when pain is relieved, a signal is sent to certain brain cells (the monitor cell on the left) which manufacture a chemical substance that signals reward. When these monitor cells have been stimulated, a signal is sent to the tip where a small amount of this reward chemical is released. The chemical or neurotransmitter then reaches and stimulates the reward center, causing a feeling of well-being.
Amphetamine damages blood vessels
Amphetamines produce an artificial feeling of pleasure. Most addictive drugs are able to produce pleasurable effects by chemically mimicking certain normal brain messenger chem...
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