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Chapter 14
Drugs
Lesson 1
Drug Misuse and Abuse
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 drug
A substance other than food that changes the
structure or function of the body or mind
 prescription
medicines
Medicines that can be sold only with a written
order from a physician
 over-the-counter Medicines that are safe enough to be taken
medicines
without a written order from a physician
 drug misuse
Taking or using medicines in a way that is not
intended
 side effect
Any effect of a medicine other than the one intended
 tolerance
A condition in which a person’s body becomes used
to the effect of a medicine and needs greater and
greater amounts of it for it to be effective
 drug abuse
Intentionally using drugs in a way that is unhealthy
or illegal
In this lesson, you will learn to
 explain the difference between drug misuse and drug abuse.
 identify the risks of drug abuse.
 develop strategies for making healthful choices about taking
medicines.
Drawing Conclusions
Based on this lesson, list three different ways
drug abuse can affect your health.
Drug Use
All medicines are drugs, but not all drugs are
medicines.
drug A substance other than food that changes the
structure or function of the body or mind
Types of Medicines
Categories of Medicines
Prescription medicines
Over-the-counter medicines
prescription medicines Medicines that can be sold only with a
written order from a physician
over-the-counter medicines Medicines that are safe enough to
be taken without a written order
from a physician
Drug Misuse
Drug misuse can happen with prescription
medicines and over-the-counter medicines.
drug misuse Taking or using medicine in a way that
is not intended
Drug Misuse
What is drug misuse?
Using a drug without following the instructions on the label
Using a drug not prescribed for you
Allowing someone else to use a drug prescribed for you
Taking more of the drug than the doctor prescribed
Using the drug longer than advised by the doctor
Drug Misuse
Even when taken correctly, some medicines will
cause a side effect.
side effect Any effect of a medicine other than the one intended
Common Side Effects
Stomach
upset
Drowsiness
Sleeplessness
Headache
Drug Misuse
When a physician prescribes a medicine that must
be taken for a long period of time, a tolerance may
develop.
tolerance A condition in which a person’s body becomes used to
the effect of a medicine and needs greater and greater
amounts of it in order for it to be effective
Drug Abuse
What is drug abuse?
Using illegal drugs
Using legal drugs for non-medical reasons
Using a medication for something other than its intended use
drug abuse Intentionally using drugs in a way that is
unhealthy or illegal
Drug Abuse
sleepiness, irritability, heart failure, stroke
Physical Health
Drug abuse affects all three sides of your health triangle.
Mental/Emotional Health
interference with brain functions,
depression, anxiety, difficulty concentrating
Social Health
withdrawing from family and friends,
loss of interest in school and other activities
Addiction
Regular
drug use
Tolerance
Addiction
Physical or
psychological need
for a drug
Addiction
Drug addiction, like alcoholism, is a disease.
Treatment options exist that can help users
overcome their addiction.
Lesson 1 Review
What I Learned
Vocabulary Define drug. Use the word in an original
sentence.
Lesson 1 Review
What I Learned
Identify Name two side effects that can occur when
taking medicine.
Lesson 1 Review
What I Learned
Compare What is the difference between drug misuse
and drug abuse?
Lesson 1 Review
Thinking Critically
Explain How does drug addiction occur?
Lesson 1 Review
Thinking Critically
Hypothesize What might you say to persuade a friend
not to take medicine that has not been prescribed to him
or her?
End of
Chapter 14
Drugs
Lesson 1
Drug Misuse and Abuse
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