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veryday
we learn more about the devastating effects of second-hand smoke,
and research shows that children are especially vulnerable to its
effects.
According to the 2000
Canadian Tobacco Use Monitoring Survey (CTUMS), 25% of the 2.4
million households with children under the age of 12 have been exposed
regularly to environmental tobacco smoke (ETS), also often referred
to as second-hand smoke (SHS), from cigarettes, cigars or pipes. This
means that approximately 900,000 children under the age of 12 continue
to be regularly exposed to ETS while in the home.
What is second-hand smoke (SHS)?
According to Health
Canada, tobacco smoke contains over 4,000 chemicals, including
tar, nicotine, carbon monoxide, formaldehyde, hydrogen cyanide, and
benzene, and that at least 50 chemicals found in tobacco smoke are
known to cause cancer. Second-hand smoke consists of the same chemicals,
but in greater amounts.
Second-hand smoke consists of mainstream smoke,
the smoke inhaled and exhaled by the smoker, and sidestream smoke,
the smoke released directly from the end of a burning cigarette. Two
thirds of the smoke from a burning cigarette is not inhaled by the
smoker but enters into the surrounding environment. The contaminated
air is inhaled by anyone in that area. Second-hand smoke has twice
as much nicotine and tar as the smoke that smokers inhale. It also
has five times the carbon monoxide which decreases the amount of oxygen
in our blood.
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Ventilation is
not a solution
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Research
shows that ventilation is not a solution to tobacco smoke exposure.
There is no system capable of removing tobacco smoke and all
its constituents from the air. The American Society of Heating,
Refrigeration and Air Conditioning Engineers (ASHRAE) sets standards
for ventilation rates. Since 1999, their standards only apply
to air that does not contain cigarette smoke.
Increasing ventilation in an enclosed environment will dilute
the smoke, but it will not eliminate the risks associated with
second-hand smoke. Air filters and air purifiers may remove
some particles from the air, but they cannot remove those that
have settled on furnishings and other surfaces. This inefficiency
also applies to stovetop ventilation hoods. |
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Although secondhand smoke is diluted in the air,
prolonged and repeated exposure can still be disabling and deadly.
More than 45,000 people will die this year in Canada due to smoking.
Of those, more than 300 non-smokers will die of lung cancer and at
least 700 non-smokers will die of coronary heart disease caused by
exposure to second-hand smoke.
Serious health consequences for children
Children are much more sensitive to the negative
health effects of second-hand smoke than adults are. Many studies
have been conducted on the health effects of second-hand smoke, concluding
that one is more likely to develop the following second-hand smoke
diseases:
- asthma
- lung cancer
- heart disease
- middle ear infections
- bronchitis
- pneumonia
- sore throats
- reduced lung function
According to the organization Physicians
for a Smoke-Free Canada, children are more vulnerable to second-hand
smoke because:
- They breathe more air relative to body weight, so they will
absorb more tobacco smoke toxins from exposure;
- their immune systems are less developed than that of adults;
- they have less ability to complain, because they are too young,
or their complaints are ignored;
- they are less likely to be able to remove themselves from exposure.
Exposure to tobacco smoke
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ETS = SHS
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There is no difference between environmental tobacco smoke (ETS) and second-hand smoke (SHS). Its is composed of the smoke emitted from the
smouldering tip of a cigarette, smoke exhaled by smokers and
"aged" tobacco smoke. ETS or SHS contain the same
chemicals found in mainstream tobacco (smoke inhaled by smokers)
smoke, but in larger amounts. |
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The effects of second-hand smoke are "dose-responsive."
This means that the more you are exposed, the more you are at risk.
No exposure equals no risk. In their May 2001 report called Protection
from second-hand tobacco smoke in Ontario, the Ontario Tobacco
Research Unit (OTRU) stated that all involuntary exposure to tobacco
smoke is harmful and should be eliminated.
What can you do about second-hand smoke
exposure?
Get involved! Your health and that of your loved ones may depend on
it.
According to the National
Clearinghouse on Tobacco and Health, studies show that the public is affected
by second-hand smoke. The National Population Health Survey indicates that 74%
of non-smokers and 41% of smokers "sometimes feel the unpleasant
effects of second-hand smoke".
Establish a "smoke-free home"
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Do you want to
quit?
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Get
help! You can talk to your physician, family, friends and colleagues.
You can also use resources available on the Internet and / or call a quit
smoking support help line.
The Canadian Cancer Society has produced a series of booklets for smokers.
The booklets are also available on the Internet. The Lung Association also
offers an Internet booklet (in PDF format) called "Do
You Want to Quit". The Ontario Lung Association provides an excellent
list of "Tips
to help you quit!", on their website.
Finally, on the Tobacco
Group/Topic page of this Web site, you will be able to find a list of
all the smoking cessation help lines currently available in Canada. |
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According to the 2001 CTUMS results, regular smoking
occurred in 25% of homes in Canada with children under the age of
12. This represents just over 900,000 children who were regularly
exposed to the hazards of second-hand tobacco smoke in their homes.
This is a significant improvement from 1996/97, when regular smoking
occurred in 33% of homes with young children.
It is quite encouraging that, whether there are children present in
the home or not, most households in Canada (77%) do not allow smoking
in the home. Nonetheless, this percentage rises somewhat if there
are children under the age of 12 present (82%)
You can declare your home a "smoke-free home". What is a
smoke-free home? It is a home where smoking is not permitted indoors.
However, that does not mean that you cannot comfortably entertain
family and friends who are smokers. An area can be arranged outside
for smokers.
How to create a smoke-free home
- First, you will have to discuss the importance of this issue
with your family members. Make sure that all smoking members are
involved in establishing the home policies - it is difficult to
break a policy when you took part in the development of that policy.
- Once you have established a policy, set up a comfortable smoking
area outside for your guests and the family members who do not
plan to stop smoking.
- Remove all the ashtrays from inside the house ? this will
encourage smokers to go outside. You can even display smoke-free
home signs at every entrance of your house.
- Finally, when you entertain guests, be polite but be firm, and
thank them for helping you to keep your home smoke-free.
Work for a smoke-free workplace
Three million Canadian workers have no protection from second-hand
smoke. Another 8 million have only partial protection. Exposure to
second-hand smoke can be higher in some workplaces than at home. Going
to work everyday should not be hazardous to your health. Workers should
not be exposed to all the carcinogens contained in second-hand smoke.
Big or small, workplaces should be as safe as possible and should
have a policy limiting tobacco use to the outdoors. As employers are
realizing that they will benefit from a smoke-free workplace, more
and more workplaces are banning smoking in their facilities, and even
in their company vehicles (i.e. Bell Canada and FedEx).
In fact, it has been shown that establishing smoke-free workplace
policies reduced the number of smokers among the employees and the
number of cigarette smoked by those who do smoke. This will result
in positive benefits ? improved health, decreased health cost,
etc.
Lobby for smoke-free by-laws
Some provinces and municipalities in Canada have passed laws in order
to protect citizens against second-hand smoke in public places and
workplaces (i.e. Ottawa). If you do not to live in an area where there
are smoke-free indoor public facilities and / or workplaces, you can
write to or call your provincial representative, mayor and / or counsellor
to voice your concerns.
References
- Canadian
Tobacco Use Monitoring Survey, Health Canada - collection
"GoSmokeFree.ca"
- The
Facts About Tobacco, Health Canada - collection "GoSmokeFree.ca"
- Second
Hand Smoke and Children's Health - Physicians for a smoke-free
Canada
- Protection
from second hand smoke in Ontario, Ontario Tobacco Research
Unit, University of Toronto -May 2001
- Where
are people most likely to be exposed to ETS?, The Basics section of the
National Clearing House on Tobacco and Health
- Fichtenberg, C. Glantz, S., Effect
of smoke-free workplaces on smoking behaviour systematic review,
BMJ.com, 2002; 325:188
For more information please visit any of the
following web sites:
Health
Canada
Canadian
Cancer Society
Frequent asked questions related to the subject:
How does smoking
by a pregnant woman affect the baby?
How can I quit smoking?
How soon after quitting
will I begin undoing the harm smoking has done to my health?
How dangerous is
second-hand smoke?
What can I do to
ensure clean smoke-free air for my family and myself?
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