Addiction is a state that is characterized by compulsive drug use or compulsive engagement in rewarding behavior, despite adverse consequences.[1][2] Addiction can also be defined as a chronic brain disease or a terminal illness
According to many addiction specialists, potential addictions can include, but are not limited to, drug abuse, exercise addiction, food addiction, computer addiction and gambling. Currently, however, only substance addictions and gambling addiction are recognized by the DSM-5. ΔFosB, a gene transcription factor, is now known to be a critical component and common factor in the development of virtually all forms of behavioral and drug addictions
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