| Background:
The Health Promotion Agency has developed and implemented
a new public information campaign on smoking which
focuses on the health effects of passive smoking. Passive
smoking refers to ‘sidestream’ smoke released
from the burning tip of a cigarette and ‘mainstream’ smoke – smoke
inhaled and then exhaled by a smoker. Other terms used
to describe passive smoking include involuntary smoking,
second-hand smoke or environmental tobacco smoke.
For more than
a decade, scientific evidence has been available to demonstrate
that exposure to passive smoking not only
harms health but worsens existing health problems. The
following have been highlighted as the major risks posed
by passive
smoking: Lung cancer
Second-hand smoke increases the risk of lung cancer in
adults.1 Non-smokers living with a smoker increase
their risk of lung
cancer by 20-30% compared to those who live in a non-smoking
household.2 For non-smokers exposed to second-hand smoke
in the workplace, the risk of lung cancer is increased
by 16-19%.2
Coronary heart disease and stroke
Second-hand smoke is proved to cause heart disease.3 Involuntary
smoking increases the risk of an acute coronary event
by 25-35%. Second-hand smoke also increases the risk of
stroke.4 One study found that among non-smokers married to a smoker,
the risk of stroke doubled.5
Asthma
For people with asthma second-hand smoke is not only associated
with more severe symptoms but also reduced lung function
and increased hospital admissions.6
Children
Second-hand smoke increases the risk of lower respiratory
tract illness such as pneumonia, bronchitis, coughing
and wheezing.7 Second-hand smoke can cause asthma attacks
in
children who are already affected by asthma.8 It
is estimated that each year, more than 17,000 children
under
5 years
are admitted to UK hospitals because of respiratory
illness caused
by exposure to other people’s cigarette smoke.9
Chemicals
Tobacco smoke contains over 4,000 chemicals, some of which
have marked irritant properties and some 60 are known
or suspected carcinogens (cancer causing substances).10 Second-hand smoke involves exposure to all these substances.
Click here to see references for all these statistics.
In August 2004 the HPA published research that assessed
the attitudes of the general public in Northern Ireland towards
smoking prohibitions or restrictions. The survey explored
public awareness of the health risks of environmental tobacco
smoke and to what extent the public are bothered by tobacco
smoke in public places.
The research results revealed that awareness of the specific
health risks of passive smoking, other than lung cancer,
is low. Overall, 73% of respondents to the research survey
indicated that environmental tobacco smoke did bother them
to some extent and 70% of respondents thought that indoor
public places in Northern Ireland should be completely
smoke-free.
The research findings provided support for a campaign that
would raise awareness of the damaging health effects
of passive smoking, provide an opportunity to give non-smokers
a voice
and give smokers a new reason to quit or consider quitting.
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