Addiction is a disorder characterized by a persistent and intense urge to use a substance or behavior despite what?
Despite potential harm and negative consequences
Addiction reflects a dysregulation of what system, leading to impulsive and compulsive urges?
Dysregulation of motivation
What term does the DSM-5 use instead of ‘addict’ or ‘addiction’?
Substance Use Disorder (SUD)
According to SAMHSA, recovery is best described as what process?
A process of change in which individuals improve health and wellness, live a self-directed life, and strive to reach their full potential
In 1784, Dr. Benjamin Rush described alcohol use disorder as what?
A “disease of the will.”
In 2023, what percentage of Americans age 12+ reported current use of nicotine, alcohol, or illicit substances?
59%
Which substance was most commonly used in 2023: alcohol, tobacco, or cannabis? Among the illicit drugs, which is most commonly used? Why might this observation be unreliable?
Alcohol (47.5%). Cannabis. Cannabis use is not legal in all states
What age group had the highest cannabis use in 2023?
18–25 years (36.7%)
Approximately what proportion of Americans met criteria for substance use disorder in the prior year?
17.1%
Globally, substance use accounted for how many disability-adjusted life years (DALYs) lost in 2017?
42 million
What was the number of U.S. overdose deaths in 2023, and how did it change in 2024? What is 2025 looking like relative to 2024? The use of which drug is frequently implicated in overdose deaths?
105,007 in 2023; decreased to 82,138 in 2024. Increased number of deaths in 2025. Opioids
How many people in the US drink alcohol? Of those people, how many are ‘binge alcohol users’ (i.e., multiple drinks in one sitting), and among the binge drinkers, how many meet the criteria for heavy alcohol use? In what year did alcohol use increase by 20%?
134 million; 57.9 million; 14.5 million; 2020
All drugs of abuse increase release of which neurotransmitter in the nucleus accumbens? Why is this significant?
Dopamine; Dopamine acts as a natural reward that reinforces drug use
What are the three stages of Koob’s model of addiction? What do they involve?
(1) Binge & intoxication (rewarding effects reinforce drug seeking behavior), (2) Withdrawal & negative affect (brain adapts to chronic drug use, leading to stress state during abstinence), (3) Preoccupation & anticipation (persistent craving and compulsive drug seeking)
In the withdrawal stage, what happens to hedonic tone (i.e., pleasantness of drug use)?
It drops below baseline as the brain adapts, leading to dysphoria; therefore, a person is more likely to feel unsatisfied during abstinence
The preoccupation stage is characterized by what three features?
Compromised executive function, high drug cue salience, and new baselines of low reward and high stress
Addiction involves reinforcement in two forms — what are they?
Positive reinforcement (pleasure/reward) and negative reinforcement (relief from withdrawal)
Genetics account for what percentage of vulnerability to addiction?
40–60%
Which gene variant protects against tobacco dependence by causing smoke intolerance?
CYP2A6
Name three psychological risk factors for addiction.
Impulsivity/novelty seeking, executive dysfunction (ADHD, TBI), and mood or trauma-related disorders
What social factors increase risk?
Parental use, adverse childhood events, poor family boundaries regarding substance use, and peer use
Name three protective factors against addiction
Gender (females are less likely to experience addiction), higher self-esteem, close family/community connections that hold you accountable, and greater ability for delayed gratification (i.e., patience)
What are the five steps in treating substance use disorders?
Identification (using DSM-V identified traits and/or screening tools), engagement, physiologic treatment/detoxification, relapse prevention, and maintenance.
What are the 4 DSM-5 categories of diagnostic criteria for SUD? How many must be exhibited for diagnosis?
Impaired control, social failure, risky use, and physiologic signs (tolerance, withdrawal)