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what is a drug?
defined through two different perspectives
1) objective (essentialist)
→ what they are and what they do
→ pharmacology
2) subjective (constructionist)
→ how it it socially defined and reacted to
→ legality, media, deprivation, common perception
three relevant contexts of substance use (SU)
1) medical utility
2) illegality
3) psychoactivity
medical ulitity
a substance that is used to treat or heal the body/mind
illegality
a substance’s legal status
→ legal (not a drug), illegal (drug)
defined by the law and law enforcement (LE)
possession and sale generate legal punishment
psychoactivity
any substance that causes significant changes in cognition and behaviors
- thinking, mood, perceptions, emotions
objective (essentialists)
based on the material or essential properties
recreational use
for altered consciousness
basic pharmacological concepts
impacts how drug effects experienced and outcomes
basic concepts on the mechanisms of drugs and substance use
→ acute-chronic distinction
→ ED/LD ratio (effective dose / lethal dose)
→ tolerance
short-term
immediately or soon after administration
symptoms:
→ intoxication
→ changes in mood / cognition
→ dilated / constricted pupils
→ increased perspiration
chronic effects of SU / longitudinal outcomes
long-term outcomes
occur after continued use
can be direct and indirect
direct
SU → Y (ex: opioids → crime)
SU has a direct connection with Y
direct consequences
indirect
SU → ? → Y (ex: opioids → dep → crime)
involves a third variable
important policy implications
ED
effective dose
→ the amount required to produce an effect
→ ex) intoxication, pain
LD
lethal dose
→ amount required to kill a population
→ toxicity
ED/LD ratio example: 1:1
dead at the effective dose
ED/LD ratio example: 1:10
still very dangerous
ED/LD ratio example: 1:1000
very safe
tolerance
diminished effects due to repeated use
→ need a larger dose to get the same effects
impacts affinity and efficacy
affinity
how well a drug binds the receptor
efficacy
the ability to activate the receptor
agonist
affinity to efficacy
antagonist
affinity
behavioral tolerance
experienced users learn how to deal with the effects of a given drug
→ usual dose has decreasing behavioral impact
cross tolerance
diminished effects of drugs in the same class
the 4 key factors that influence drug action
1) route administration
2) injection
3) oral
4) dose
route adminstration
a method of taking a drug
impacts strength and duration of effects
injection
intravenous → veins
subcutaneous → skins
intramuscular
oral
smoking/huffing/vaping
snorting
dose
amount of a substance taken at one time
→ interconnected with effects
dose-responsive curve
higher the dose, the greater the effect is
potency
the quantity it takes to produce a given effect
→ the lower the amount that produces an effect, the greater the potency
purity
the degree of a drug is free from containments or adulterants
→ a general concern for street drugs
- cutting/binding agents
- other psychoactive substances
drug mixing (poly substance use)
the ingestion of 1 + drugs at the same time
antagonistic effect
one cancels the other out
1 + 1 = 0
additive effect
effects are compounding
1 + 1 = 2
synergistic effect
effects are amplified (multiplier effect)
1 + 1 = 4
pathology perspective
assumes all SU is abnormal/unnatural
all use is abuse
medical professionals are the gatekeepers of legitimate use
diagnosis criteria and testing
impartial (objective) perspective
no assumptions
use is not inherently good / bad
acknowledges different types of use
→ experimental, recreational, misuse/abuse
use
the act of ingesting a given substance(s)
general category that includes all forms
abuse
subcategory of use
ambigous
→ use that carries a higher risk than a lower likelihood of objectively determinable harm
the classical addiction model (or “physical dependence”)
an “addicting” drug is defined by the presence of certain withdrawal symptoms
→ fever, chills, body aches
→ vomiting and diarrhea
→ convulsions and seizures
cross-dependence
recognized by classical addiction model
withdrawal symptoms can be relieved by other drugs in the same class
→ alcohol and benzodiazepines
→ heroin and opioids
applies only to drugs that produce physical dependence
behavioral dependence
engaging in continued compulsive and harmful use despite detrimental consequences
→ harm to physical and social health
behavioral reinforcement
type of conditioning
drugs present a very positive stimuli
not the same as physical dependence
the dependence/reinforcement model
the classic conception of addiction does not explain most continued drug use
- most do not come with physical withdrawal
little distinction between drugs that cause physical and psychological dependence
reinforcement explains continued compulsive use
liability for dependence
substances vary in their potential for causing dependence
closely related to how reinforcing drug use is
→ how intensely enjoyable it is
immediate sensual appeal
capacity to generate “intense pleasure without the intervention of learning or other cognitive processes
the big three
1) cocaine
2) methamphetamine
3) heroin / fentanyl
theoretical
explain why people use
who uses and why
confirm / disprove theories
practical / policy
evaluate policy
improve living conditions and save lives
MTF
monitoring the future
NSDUH
national survey on drug use and health
examining SU
important to examine differences among
→ drug types / classes
→ rates of different drugs
various drugs attract users at substantially different rates
→ most are occasional users
prevalence rates
proportion of a population that uses a drug during a given time period
lifetime prevalence
never used a drug during their lifetime
period prevalence
used during a time period of interest
systematic empirical (scientific) data
nationally representative, quantitative
represent an accurate cross-sectional view of the phenomenon
→ this hasn’t happened much
reconstructed bits & pieces through archelogical & historical findings
empirical, localized rather than systemic
natural era
use of cannabis, peyote, psychedelic fungi, opium, coca leaves, alcohol
use in religious/ceremonial contexts or as medicine
innovation: the classification of alcohol
→ wine (13-14%) > liquor (40-50%)
transformation era / extractive era
start of the 19th century (1800s)
→ largely driven by innovations and discoveries"
- hypodermic syringe (1853)
created new substances by chemical extraction
→ much more potent
- morphine (1804)
- codeine (1831)
- cocaine (1855, 1860)
much more powerful & reinforcing than natural substances
synthetic era
early 20th century (1900s)
scientists created completely new substances
→2500 barbiturate compounds from 1903 - 1930
→ synthesized the first amphetamines from the 1920s
led to the “pharmacological revolution” in the 1950s
→ use of synthetic chemicals to treat mental illness
→ produce recreational & dependent users
SU during the beginning of the United States
in the “natural” era
alcohol was frequently used in colonial America
→ tradesman & farmers drank beer throughout the day
→ leaders drank and served large amounts of hard liquor and “punch” during political & social gatherings
alcohol had a near monopoly of SU in the U.S.
→ presented social problems
the United States & the transormative era
widespread use of morphine after the civil war
→ led to a number of dependent veterans
→ widowed by the way users
late 1800s, described as “dope fiends’ paradise”
→ availability of very powerful substances some without prescriptions
→ largely unregulated
bayer company’s “heroin”
cough, sleep, morphine addiction (dependence)
brown’s iron bitters (cocaine)
“give new life to the nerves”
the “cure” for a wide range of diseases
prohibition
the 18th amendment (1920)
→ the Volstead act
→ pressure from the temperance movement
made it illegal to manufacture / sell alcoholic beverages in the U.S
→ decline in alcohol consumption
→ created a criminal illicit market
repealed by the 21st amendment (1933)
due to public pressure
expensive to enforce & millions in lost tax revenue
early data on SU
late 1800s - early 1900s
some partial surveys from record-keepers
→ pharmacists’ surveys on drug-dependent customers
no systemic data until 1970s
drug use a medicine in the United States (late 1800s)
likely surpassing contemporary use
primitive medical practices
→ major medical procedures without anesthetic
→ more likely to cause harm than help
- bloodletting
- leeching
- lobotomy
opioids seemed to treat conditions
→ treated the symptoms
medical, scientific, & technological innovations
before 1800s, ingested substances were in a natural state → milder
several innovations
→ made substances more available
→ increased potency and purity
→ discovered more effective routes of administration
otc (over the counter)
contained opium, morphine, cannabis, cocaine
no prescription
low cost
marked as “cure-alls”
- flat feet to cancer
no requirement to list ingredients
Rx (prescriptions)
pure versions of otc meds
some states had laws requiring rx by the 1890s
→ largely unenforceable/ineffective
the pure food & drug act (1906)
meatpacking industry (the jungle)
exposed horrific conditions
public outrage & a call for change
congress passes this act to regulate consumer productions
→ creates FDA
→ ingredient labels and testing
early anti-opium legislation
the British east india company
→ owned the global trade of opium
→ smuggles opium into china and starts the opium wars
the 2 major international conferences on the international trade of opium
1) shanghai conference (1906)
2) hauge confrence (1911)
the Harrison act (1914)
first federal attempt to regulate drugs
→ mostly opioids
the most important national drug regulation
→ sets the framework for future national policy
regulates use by physicians
→ narcotics can only be “prescribed in good faith”
→ registry of prescribers & prescriptions
ambiguous, no general agreement on interpretation
→ especially on the treatment on physical dependence
early maintenance programs
a medical approach to treat opioid dependence
→ medical professionals provide doses of drugs on dependent patients
by 1918, there were 50 nationwide
→ ran by local, state, and federal governments
→ often a contentious issue
last program closed in 1923
→ interfered with efforts by law enforcement to identify sources
30,000 doctors arrested between 1914 - 1938 for prescribing narcotics
→ 3,000 served time, created a new class of criminals
the marihuana tax act (1937)
historical accounts suggest use was among mexican migrants and black jazz culture
federal law enforcement began a campaign to criminalize cannabis
→ yellow journalists sensationalized, fear-driven campaign
- “addicts” that became violent, dangerous, insane
rooted in anti-mexican and anti-black racism
the controlled substances act (1970) (comprehensive drug abuse prevention & control act)
originally designed to address funding for research, rehabilitation, and educational) programs
→ substantial funding for public hospitals
→ created the national institute on drug abuse (NIDA)
the most funding went to control through law enforcement
→ new “tough on crime” climate
→ moved federal enforcement from the Treasury to the DOJ
established categories of controlled substances
→ scheduling of controlled substances
schedule I
criteria
→ high potential for abuse, no accepted medical use, lack of safety under medical supervision
most dangerous
major contradiction:
→ medical value for some substances
- several have demonstrated utility for several mental and physical illnesses
schedule II
criteria
→ high potential for abuse (less than s1), limited accepted medical use, may lead to dependence
schedule III
potential for abuse, less than s1 and s2
accepted medical use
may lead to low-moderate physical dependence or high physiological dependence
schedule IV
criteria
→ low potential for drug abuse relative to drugs in higher schedules
→ accepted medical use widely
→ may lead to limited psychological and physical dependence
examples
→ xanax, valium, ambien, tramodel
schedule V
low potential for abuse relative to drugs in higher schedules
accepted medical use
may lead to limited psychological and physical dependence
examples
→ lyrica, robitussin AC
decisions on scheduling
made at DEA’s headquarters
professionals in these meetings include
→ drug researchers
→ medical doctors
→ 2-4 pharma lobbyists
→ DEA
prelude on the war of drugs
by the end of the 1960s, u.s was in turmoil
→ vietnam war
→ civil rights leader assassinated
June 1971, Nixon declared drugs were “public enemy number one”
→ increased size and prescence at federal agencies
→ introduced mandatory sentencing and no-knock warrant
→ majority funding to treatment
the white paper on drug abuse
ford administration
examined extent of drug abuse in the u.s
presents policy recommendations to reduce abuse
→ total elimination is “unlikely”
→ advised a balanced strategy
→ drugs not equally dangerous
the parents movement
end of 1970s, there was a growing drug movement
→ community college professor who was concerned about his daughter’s cannabis use
→ other parents and him pushed for stricter drug polices
formed advocacy groups
→ parental resources institute in drug education (PRIDE)
→ national federation of parents for drug-free youth (NFP)
Carter administration installed an NIDA director that was anti-cannabis
war on drugs (1980s)
regan administration (1981 - 1989)
→ cuts to rehab, increases enforcement
→ “zero tolerance” policy
arrests for drug use dramatically increase (70%)
just say no campaign
abstinence drug education
the comprehensive crime control act (1984)
establishes u.s sentencing commission
forfeiture of cash/property occurred with funds of drugs sales
increases penalties for distribution in elementary / secondary school zones
anti-drug abuse act (1988)
declared goal for drug-free america (1955)
→ three strikes for felony drug offenses
→ broadened drug-free juvenile areas
→ made non-criminal punishment for drug actions
- denial of federal benefits, denial of public housing
drug testing
regan’s executive order (1986)
“drug free workplace”
sensitive positions required testing
non-sensitive positions tested when accidents occurred
new hires get drug tested
positive tests must get treatment or they are fired
state/local government/private businesses began testing
→ usually pre employment screenings
→ tests students in extracurricular activities
race & drug policy
promote “war on drugs” through southern strategies
race-neutral language
played on white fears of black criminality
→ republicans gain political control
issue of drugs lack individual responsibility and morality
racial disparities in drug arrests
war on drugs (1990s)
increased rates on drug use between 1960 - 1980s > epidemic
→ seen as a threat to national security that required action
marked increased attention to enforcement efforts
→ domestic and abroad
increased major funding in 3 key areas
→ law enforcement efforts to address trafficking and use
→ prosecution of drug offenders
→ efforts internationally with intervention and collaboration
federal budget for the WOD doubled (1991 - 2001)
clinton commissioned 100k more officers for anti-drug operations
→ nearly 1mil drug arrests (mid 90s)
5.1 billion advocated for prisons in 1995
82% of arrests from cannabis use
→ increased heroin & cocaine
war on drugs (WOD) (2000s)
bush administration goals to reduce drug use
prevent use by it starts
treat current users
disruption of the illicit market
administration continued to emphasize enforcement
creation of drug courts
→ drug offenders offered treatment, with threat of punishment
second chance act (2008)
funding for re-entry services for ex-offenders
educational and employment services
program alternatives to incarceration
theories of SU
attempts to explain, a testable idea driven by hypothesis
→ do not compete with one another
→ none can fully answer the progression of SU
→ start broad, narrows down
try to answer the following:
1) given the benefits/setbacks, why do people use drugs?
2) which (kinds of) people are willing to take the chance of having terrible experiences to get high
the 3 theoretical frameworks for su
1) biological
2) psychological
3) sociological
perspectives of SU
general idea about causation of SU, no specific hypothesis
the 2 necessary preconditions for use
1) predispositions, motive, susceptibility
2) availability and access to substances
biological theories
medical and physiological mechanisms among particular individuals influence them to experiment and/or abuse drugs
some are constitutional
→ fixed mechanisms present at birth
gene environment interaction
(BT) genetic factors
substance use & addictions are due to inherited genetics
→ some are more prone than others
most research has focused on alcohol
other factors are needed