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The New Science of Addiction: Genetics and the Brain
characterized by changes in the brain which result in a compulsive desire to use a drug. A combination of many factors including genetics, environment and behavior influence a person's addiction risk, making it an incredibly complicated disease. The new science of addiction considers all of these factors - from biology to family - to unravel the complexities of the addicted brain. The reward pathway is responsible for driving our feelings of motivation, reward and behavior.