Transcript Drugs

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What is a drug?
A drug is any substance that changes
the way the body or mind works.
How many different types
of drug can you name?
Paracetamol, alcohol, nicotine, cannabis and ecstasy are
all examples of substances that can be called drugs.
Some drugs are beneficial, like asthma drugs, but others
like alcohol and nicotine in cigarettes can cause harm.
Drugs can be categorized into over-the-counter drugs,
prescription drugs, recreational drugs and illegal drugs.
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How is each type of drug classified?
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How do drugs affect the body?
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How can other substances harm the body?
Solvents such as aerosols, glues, paint and cleaning fluid can
make people feel uninhibited, happy and dizzy if inhaled.
Inhaling solvents can cause
vomiting and blackouts. People
can also suffer fatal heart
problems, even when solvents
are taken for the first time.
Long term solvent abuse has
been shown to damage the
brain, liver and kidneys.
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Why are drugs so dangerous?
Drugs can affect the way your brain works and cause
damage to your body. They make you more likely to
have accidents and make bad decisions.
People can become addicted to drugs.
This means that they develop a physical
or mental need for the drug.
An overdose is when someone takes too much of a
drug. This can cause death or serious illness.
You never know what other substances have been added
to an illegal drug, so these could cause unknown effects.
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Smoking tobacco
Cigarettes are made from finely cut and
dried tobacco leaves. Tobacco is made
from the leaves of the tobacco plant,
which contain small amounts of nicotine.
When tobacco smoke is inhaled, the
nicotine quickly enters the bloodstream
and has a stimulating effect on the
nervous system.
However, smoking is very dangerous and
can have serious effects on the lungs
and respiratory system.
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Smoking and the respiratory system
Why is a respiratory system that works properly essential
for good health?
The respiratory system,
which includes the lungs,
provides the body with the
oxygen it needs for
respiration.
The lungs are delicate,
spongy organs that deal with
12,000 litres of air each day.
How does smoking damage the respiratory system?
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What’s in a cigarette?
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What’s in a cigarette?
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How does smoking affect health?
How will these chemicals be harmful to the body’s systems?
Carbon monoxide – A poisonous gas that reduces the amount
of oxygen that red blood cells can carry around the body.
Nicotine – An addictive drug
that affects the central
nervous system. It increases
the heart rate and narrows
the blood vessels, causing
high blood pressure.
Tar – A brown, sticky substance that consists of tiny particles
and is formed when tobacco smoke condenses. Tar paralyzes
tiny hairs in the airways called cilia, this stops them removing
mucus easily.
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How does smoking affect the lungs?
Which picture shows the healthy lungs of a non-smoker
and which shows the unhealthy lungs of a smoker?
Which set of lungs would you prefer?
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Smoking statistics
Smoking doesn’t just make you unfit and unhealthy; it kills.
In the UK, around 114,000 smokers die every year as a result
of their habit – that’s the same as 13 people per hour.
Smoking is thought to kill around five times more people in the
UK than road traffic accidents, other accidents, poisoning and
overdose, alcoholic liver disease, murder and manslaughter,
suicide and HIV infection all put together.
About half of all regular cigarette smokers will eventually be
killed by their habit.
With such scary statistics about smoking, what can be
done to help people give up this harmful habit?
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Smoking ban
Passive smoking has health implications
for people who do not smoke.
People living with a smoker are
25% more likely to get lung cancer.
Every year, 17,000 children are
admitted to hospital due to inhaling
smoke from those around them.
Due to the serious effects of smoking on smokers and nonsmokers, the government has banned smoking in enclosed
public places, including pubs, clubs, restaurants and offices.
What is happening in other countries?
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Smoking bans around the world
Smoking is banned in many public places around the world.
Norway
New York
California
South Korea
Ireland
Romania
UK
Boston
Iran
Italy
France
Tokyo
Pakistan
Greece
Turkey
Thailand
Uganda
Tanzania
South Africa
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Australia
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Smoking quiz
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Cannabis
Cannabis is an illegal drug made from
parts of the cannabis plant. It is usually
smoked with tobacco, and can cause a
relaxing effect.
However, cannabis is a mild hallucinogen
and prolonged use may be linked to
increased risk of developing schizophrenia.
In the short term cannabis use can cause dizziness,
paranoia and loss of coordination.
Some health experts say that cannabis is a gateway drug. This
means that it can lead to the use of more harmful drugs.
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The effects of smoking and cannabis
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What is alcohol?
Alcohol is a chemical called
ethanol, found in alcoholic drinks.
This legal drug can lower your
inhibitions and affect your
judgement.
Alcohol is seen by many
people as a socially acceptable
drug, however this doesn’t
mean that it can’t be harmful.
It is an addictive drug that can
have serious consequences.
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How does alcohol affect health?
Alcohol is a recreational drug that has short-term and
long-term effects on the body.
Alcohol is a depressant, it works by
slowing down the nervous system and
relaxing the brain. Alcohol can reach
the brain in just one minute. Too much
alcohol can damage the brain cells
and cause depression.
The liver breaks down alcohol to
remove this toxic drug from the body.
Too much alcohol can damage the
liver leading to cirrhosis or cancer.
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Alcohol advice
It is recommended that men should drink no more than
21 units a week, and women 14 units.
How many units are in each drink?
Drink
1 pint of strong lager
1 pint of normal lager
3
2
1 pint of cider
2
250 ml of wine
3
175 ml of wine
2
1 bottle of alcopop
25 ml of spirit
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Units of alcohol
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Drink driving
Alcohol slows down reactions and affects coordination and
judgement. This can be very dangerous when driving a car.
On average, 3,000 people are killed or
seriously injured in the UK each year
in drink drive collisions.
In the UK the maximum blood alcohol
level is 80 mg in 100 ml. This means
that men should drink no more than four
units of alcohol before driving and women
should drink no more than three units.
Alcohol affects different people in different ways so
it’s best not to drink at all if you plan to drive.
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The effects of alcohol
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Glossary
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Anagrams
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Multiple-choice quiz
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