Addiction is a brain disorder characterized by compulsive engagement in rewarding stimuli despite adverse consequences. Despite the involvement of a number of psychosocial factors, a biological process – one which is induced by repeated exposure to an addictive stimulus – is the core pathology that drives the development and maintenance of an addiction. The two properties that characterize all addictive stimuli are that they are reinforcing (i.e., they increase the likelihood that a person will seek repeated exposure to them) and intrinsically rewarding (i.e., they are perceived as being inherently positive, desirable, and pleasurable).
Addiction is a disorder of the brain’s reward system which arises through transcriptional and epigenetic mechanisms and occurs over time from chronically high levels of exposure to an addictive stimulus (e.g., eating food, the use of cocaine, engagement in sexual activity, participation in high-thrill cultural activities such as gambling, etc.). ΔFosB, a gene transcription factor, is a critical component and common factor in the development of virtually all forms of behavioral and drug addictions. Two decades of research into ΔFosB’s role in addiction have demonstrated that addiction arises, and the associated compulsive behavior intensifies or attenuates, along with the overexpression of ΔFosB in the D1-type medium spiny neurons of the nucleus accumbens. Due to the causal relationship between ΔFosB expression and addictions, it is used preclinically as an addiction biomarker. ΔFosB expression in these neurons directly and positively regulates drug self-administration and reward sensitization through positive reinforcement, while decreasing sensitivity to aversion.[note 1]
Addiction exacts an “astoundingly high financial and human toll” on individuals and society as a whole. In the United States, the total economic cost to society is greater than that of all types of diabetes and all cancers combined. These costs arise from the direct adverse effects of drugs and associated healthcare costs (e.g., emergency medical services and outpatient and inpatient care), long-term complications (e.g., lung cancer from smoking tobacco products, liver cirrhosis and dementia from chronic alcohol consumption, and meth mouth from methamphetamine use), the loss of productivity and associated welfare costs, fatal and non-fatal accidents (e.g., traffic collisions), suicides, homicides, and incarceration, among others. Classic hallmarks of addiction include impaired control over substances or behavior, preoccupation with substance or behavior, and continued use despite consequences. Habits and patterns associated with addiction are typically characterized by immediate gratification (short-term reward), coupled with delayed deleterious effects (long-term costs).
Examples of drug and behavioral addictions include alcoholism, amphetamine addiction, cocaine addiction, nicotine addiction, opioid addiction, food addiction, gambling addiction, and sexual addiction. The only behavioral addiction recognized by the DSM-5 and the ICD-10 is gambling addiction. The term addiction is misused frequently to refer to other compulsive behaviors or disorders, particularly dependence, in news media. An important distinction between drug addiction and dependence is that drug dependence is a disorder in which cessation of drug use results in an unpleasant state of withdrawal, which can lead to further drug use. Addiction is the compulsive use of a substance or performance of a behavior that is independent of withdrawal. Addiction can occur in the absence of dependence, and dependence can occur in the absence of addiction, although the two often co-occur.
Edmonds is a city in Snohomish County, Washington, United States, and is a Northern Suburb of Seattle located 11 miles (18 km) north of the city. Edmonds has a view of Puget Sound and both the Olympic Mountains and Cascade Range. The third most populous city in Snohomish County after Everett and Marysville, the population was 39,709 according to the 2010 census and the estimated population in 2015 was 40,490. Based on per capita income, one of the more reliable measures of affluence, Edmonds ranks 20th of 281 areas in the state of Washington.
Edmonds is a port in the Washington State Ferries system. Currently, the only ferry from Edmonds is a run to Kingston, Washington; in the past, there have been much longer routes from Edmonds to Port Townsend, Washington.
Edmonds is the oldest incorporated city in Snohomish County. Logger George Brackett founded Edmonds in 1890, naming the city either for Vermont Sen. George Franklin Edmunds or in association with the nearby Point Edmund, named by Charles Wilkes in 1841 and later changed to Point Edwards. Brackett came to the future site of Edmonds while paddling a canoe north of Seattle, searching for timber. When a gust of wind hit his canoe, Brackett beached in a location later called “Brackett’s Landing”.
The town was named Edmonds in 1884, but was not incorporated until 1890 as an official “village fourth class” of Snohomish County. In that same year, Brackett sold 455 acres (1.84 km2) to the Minneapolis Realty and Investment Company. The town was plotted and a wharf was added along the waterfront. Modest houses and commercial structures sprouted up with a row of shingle mills dominating the cityscape.