Biological mechanism of addiction
Several mechanisms of addiction have
been described in the biological, social and psychological.
Dependence on a product or an act is
related to neurobiological mechanism: everything happens in the brain.
Substances produced by the brain as
dopamine and serotonin are involved in the management and control of human
emotional states and influence the brain-seeking behaviors of fun, impulsive
and aggressive activities.
The mere sight of the product or
something reminiscent of an act or object (smell, shape, texture) cause an
increase in the secretion of dopamine and serotonin stimulate the brain and
have an increased urge to the substance or the completion of the act and
motivating the individual to use the product or perform the act. This is the
circuit of the reward system.
The reward system of the brain
essential for survival is a system that participates in the vital functions
acts related to nutrition and reproduction, acts related to the satisfaction
and pleasure.
Psychoactive substances (alcohol,
drugs, ...) are substances that alter the system by modifying its operation led
to the dependence of the body to these substances.
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