|
Questions About Smoking, Tobacco, and Health
Is there a safe way to smoke?
No.
All cigarettes can damage the human body.
Any amount of smoke is dangerous. Cigarettes are perhaps the
only legal product whose advertised and intended use -- smoking
-- is harmful to the body and causes cancer. Although some
people try to make their smoking habit safer by smoking fewer
cigarettes, most smokers find that hard to do. Research
has found that even smoking as few as 1 to 4 cigarettes a day
can have serious health consequences, including an increased
risk of heart disease and a higher risk of dying at an earlier
age.
Some people think that switching
from high-tar and high-nicotine cigarettes to those with low tar
and nicotine makes smoking safer, but this is not true. When
people switch to brands with lower tar and nicotine, they often
end up smoking more cigarettes, or more of each cigarette, to
get the same nicotine dose as before. Smokers have been led to
believe that "light" cigarettes have a lower health risk and are
a good alternative to quitting. This is not true. A low-tar
cigarette can be just as harmful as a high-tar cigarette because
a person often takes deeper puffs, puffs more frequently, or
smokes them to a shorter butt length. Studies have not found
that the risk of lung cancer is any lower in smokers of "light"
or low-tar cigarettes. Hand-rolled cigarettes, while reported to
be a cheaper and healthier way to smoke, are not safer than
commercial brands. In fact, lifelong smokers of hand-rolled
cigarettes have been found to have an increased risk of cancers
of the larynx (voice box), esophagus (tube that connects the
mouth to the stomach), mouth, and pharynx (throat) when compared
with smokers of manufactured cigarettes. "All natural"
cigarettes are marketed as containing no chemicals or additives
and rolled with 100% cotton filters. There is no proof they are
healthier or safer than other cigarettes, nor is there good
reason to think they would be. Smoke from these cigarettes, like
the smoke from all cigarettes, contains numerous carcinogens and
toxins that come from the tobacco itself, including tar and
carbon monoxide.
Herbal cigarettes, even though they do not contain tobacco, also
produce tar and carbon monoxide and are dangerous to your
health. The bottom line is there's no such thing as a safe smoke.
|
Is
cigarette smoking really addictive?
Yes.
The nicotine in cigarette smoke causes an
addiction to smoking. Nicotine is an addictive drug (just like
heroin and cocaine) for 3 main reasons.
-
When taken in small amounts, nicotine creates pleasant
feelings that make the smoker want to smoke more.
-
Smokers usually become dependent on nicotine and suffer
physical withdrawal symptoms when they stop smoking. These
symptoms include nervousness, headaches, and trouble
sleeping.
-
Because nicotine affects the chemistry of the brain and
central nervous system, it can affect the mood and nature of
the smoker.
What does nicotine do?
In large doses nicotine is a poison and can kill
by stopping a person's breathing muscles. Smokers usually take
in small amounts that the body can quickly break down and get
rid of.
The first dose of nicotine causes a person to
feel awake and alert, while later doses result in a calm,
relaxed feeling.
Nicotine can make new smokers, and regular
smokers who get too much of it, feel dizzy or sick to their
stomachs. The resting heart rate for young smokers increases 2
to 3 beats per minute. Nicotine also lowers skin temperature and
reduces blood flow in the legs and feet. It plays an important
role in increasing smokers' risk of heart disease and stroke.
Because nicotine is such a powerful constrictor
of arteries, many vascular surgeons refuse to operate on
patients with peripheral artery disease unless they stop
smoking.
Many people mistakenly think that nicotine
is the substance in tobacco that causes cancer. This belief may
cause some people to avoid using nicotine replacement therapy
when trying to quit. While nicotine is what gets (and keeps)
people addicted to tobacco, other substances in tobacco are
responsible for its cancer-causing effects.
There is some early evidence from lab-based
studies that nicotine may help existing tumors to grow, but
whether these results apply in people is not yet known and more
research is needed.
|
How many people smoke cigarettes?
Among US
adults, cigarette smoking has declined from about 42% of the population
in 1965 to about 21% in 2005 (the latest year for which numbers are
available). About 45 million adults smoked cigarettes in 2005. About 23%
of men and 19% of women were smokers. Education seems to affect smoking
rates, as shown by a steady decrease in the smoking rates in groups with
a higher level of education.
What in cigarette smoke is harmful?
Cigarette
smoke is a complex mixture of chemicals produced by the burning of
tobacco and the additives. The smoke contains tar, which is made up of
more than 4,000 chemicals, including over 60 known to cause cancer. Some
of these substances cause heart and lung diseases, and all of them can
be deadly. You might be surprised to know some of the chemicals found in
cigarette smoke. They include:
-
cyanide
-
benzene
-
formaldehyde
-
methanol
(wood alcohol)
-
acetylene
(the fuel used in welding torches)
-
ammonia
Cigarette
smoke also contains the poisonous gases
nitrogen oxide
and
carbon monoxide.
Its main active ingredient is nicotine, an addictive drug.
Does smoking cause cancer?
Yes.
Tobacco use accounts for about one third of all cancer deaths in the
United States. Smoking causes almost 90% of lung cancers. Smoking also
causes cancers of the
larynx
(voice box), oral cavity,
pharynx
(throat),
esophagus,
bladder,
and
contributes
to
the development of cancers of the pancreas, cervix, kidney, and stomach;
it is also linked to the development of some leukemias.
Cigars, pipes, and spit tobacco all cause cancers, too. There is no safe
way to use tobacco.
How does cigarette smoke affect the
lungs?
Damage of
the lungs begins early in smokers, and all cigarette smokers have a
lower level of lung function than nonsmokers. Cigarette smoking causes
several lung diseases that can be just as dangerous as lung cancer.
Chronic bronchitis -- a disease where the
airways produce excess mucus, which forces the smoker to cough more
often -- is a common ailment of smokers.
Cigarette
smoking is also the major cause of
emphysema
-- a disease that slowly destroys a person's ability to
breathe. For oxygen to reach the blood, it must move across large
surfaces in the lungs. Normally, thousands of tiny sacs make up the
surface area in the lungs. When emphysema occurs, the walls between the
sacs break down and create larger but fewer sacs. This decreases the
amount of oxygen reaching the blood. Eventually, the lung surface area
can become so small that a person with emphysema often must gasp for
breath.
Shortness
of breath (especially when lying down), a chronic mild cough (which is
often dismissed as "smoker's cough"), feeling tired, and sometimes
weight loss are early symptoms of emphysema. People with emphysema are
at risk for many other complications resulting from weakened lung
function, including pneumonia. In later stages of the disease, patients
can only breathe comfortably with the help of an oxygen tube under the
nose.
Emphysema cannot be reversed,
but it can be slowed down--especially if the patient stops smoking.
More than
7 million current and former smokers suffer from chronic obstructive
pulmonary disease (COPD), the name used to describe both chronic
bronchitis and emphysema. COPD is the fourth leading cause of death in
America, and the number of women dying from the disease is higher than
the number of men. Smoking is the primary risk factor for COPD. About
80% to 90% of COPD deaths are caused by smoking. The late stage of
chronic lung disease is one of the most miserable of all medical
conditions. It creates a feeling of gasping for breath all the time --
similar to the feeling of drowning.
Why do smokers have "smoker's cough?"
Cigarette smoke contains chemicals that irritate the air
passages and lungs. When a smoker inhales these substances, the body
tries to protect itself by producing mucus and coughing. The "early
morning" cough of smokers happens for several reasons. Normally, tiny
hair-like formations (called cilia) beat outward and sweep harmful
material out of the lungs. Cigarette smoke slows the sweeping action, so
some of the poisons in the smoke remain in the lungs and mucus remains
in the airways. When a smoker sleeps, some cilia recover and begin
working again. After waking up, the smoker coughs because the lungs are
trying to clear away the poisons that built up the previous day. The
cilia will completely stop working after long-term exposure to smoke.
Then the smoker's lungs are even more exposed and susceptible than
before, especially to bacteria and viruses in the air.
If you smoke but don't inhale, is there
any danger?
Yes.
Wherever smoke touches living cells, it does harm. Even if smokers don't
inhale they are breathing the smoke as secondhand smoke and are still at
risk for lung cancer. Pipe and Cigar Smokers, who often don’t inhale,
are at an increased risk for lip, mouth, tongue, and several other
cancers.
Does cigarette smoking affect the heart?
Yes.
Smoking cigarettes increases the risk of heart disease, which is the
number one cause of death in the United States. Smoking, high blood
pressure, high blood cholesterol, physical inactivity, obesity, and
diabetes are all risk factors for heart disease, but cigarette smoking
is the biggest risk factor for sudden heart death. Smokers who have a
heart attack are more likely to die within an hour of the heart attack
than nonsmokers. Cigarette smoke can cause harm to the heart at very low
levels; even levels much lower than needed to cause lung disease.
How does smoking affect pregnant women
and their babies?
Pregnant women who smoke risk the health
and lives of their unborn babies. Smoking during pregnancy is linked
with a greater chance of miscarriage, premature delivery, stillbirth,
infant death, low birth weight, and sudden infant death syndrome (SIDS).
Up to 10% of infant deaths would be prevented if pregnant women did not
smoke.
When a pregnant woman smokes, she's
smoking for two. The nicotine, carbon monoxide, and other harmful
chemicals enter her bloodstream, pass directly into the baby's body, and
prevent the baby from getting essential nutrients and oxygen for growth.
Breast-feeding is a good way to feed a
new baby, but smoking may cause problems. If the mother smokes, the baby
is exposed to the nicotine and other smoke poisons from her breast milk.
Nicotine could cause numerous unwanted symptoms in the baby (such as
restlessness, a rapid heartbeat, vomiting, or diarrhea).
Some research has also suggested that
children whose mothers smoked while pregnant or who have been exposed to
secondhand smoke, even in small amounts, may be slower learners in
school. They may be shorter and smaller than children of nonsmokers.
They are also more likely to smoke when they get older because they see
their parents smoking.
What are some of the short- and long-term
effects of smoking cigarettes?
Smoking causes many types of cancer,
which may not develop for years. But cancers account for only about half
of the deaths related to smoking. Long-term, smoking is also a major
cause of heart disease, aneurysms, bronchitis, emphysema, and stroke,
and it contributes to the severity of pneumonia and asthma. Skin wounds
take longer to heal and the immune system may be less effective in
smokers compared to nonsmokers.
The truth is that cigarette smokers die
younger than nonsmokers. In fact, according to a study from Centers for
Disease Control and Prevention (CDC) done in the late 1990s, smoking
shortened male smokers' lives by 13.2 years and female smokers' lives by
14.5 years. Both men and women who smoke are much more likely to die
during middle age (between the ages of 35 and 69) than those who have
never smoked.
Smoking also causes many short-term
effects, such as decreased lung function. Because of this, smokers often
suffer shortness of breath and nagging coughs; they often will tire
easily during physical activity. Some other common short-term effects: a
diminished ability to smell and taste, premature aging of the skin, bad
breath, stained teeth, and increased risk of sexual impotence in men.
What are the chances that smoking will
kill you?
About half
of all the people who continue to smoke will die because of the habit.
In the United States, tobacco causes nearly 1 in 5 deaths, killing about
440,000 Americans each year. Smoking is the single most preventable
cause of death in our society.
Based on
current patterns, smoking will kill about 650 million people alive in
the world today. Tobacco-caused deaths worldwide are expected to
increase from about 5 million per year today to about 10 million per
year by the 2030s. Most of these deaths will occur in developing
countries.
What are the dangers of environmental
tobacco smoke (ETS)?
ETS, also
known as passive smoking or secondhand smoke, occurs when nonsmokers
inhale other people’s tobacco smoke. This includes mainstream smoke
(smoke that is inhaled and then exhaled into the air by smokers) and
side-stream smoke (smoke that comes directly from the burning tobacco in
cigarettes). ETS contains the same harmful chemicals as the smoke that
smokers inhale. In fact, because side-stream smoke is formed at lower
temperatures, it contains even larger amounts of some toxic and
cancer-causing substances than mainstream smoke.
There is
strong evidence that ETS causes serious damage to human health. ETS
causes about 3,400 lung cancer deaths and about 46,000 deaths from heart
disease each year in healthy nonsmokers who live with smokers. It can
also affect nonsmokers by causing asthma and other respiratory problems,
eye irritation,
headaches, nausea, and dizziness.
Children whose parents smoke are more likely to suffer from asthma,
pneumonia, bronchitis, ear infections, coughing, wheezing, and increased
mucus production. Babies of parents who smoke have a greater chance of
dying of sudden infant death syndrome (SIDS). Pregnant women exposed to
ETS are at risk for having a low birth weight baby and may also be at
risk for pre-term delivery and miscarriage.
An issue
that continues to be an active focus of scientific research is whether
secondhand smoke may increase the risk of breast cancer. Both mainstream
and secondhand smoke contain about 20 chemicals that, in high
concentrations, cause breast cancer in rodents. Chemicals in tobacco
smoke reach breast tissue and are found in breast milk.
The
evidence regarding secondhand smoke and breast cancer risk in human
studies is controversial, at least in part because the risk has not been
shown to be increased in active smokers. One possible explanation for
this is that tobacco smoke may have different effects on breast cancer
risk in smokers and in those who are just exposed to smoke.
A report
from the California Environmental Protection Agency in 2005 concluded
that the evidence regarding secondhand smoke and breast cancer is
"consistent with a causal association" in younger, mainly premenopausal
women. The 2006 US Surgeon General's report, The Health Consequences
of Involuntary Exposure to Tobacco Smoke, concluded that there is
"suggestive but not sufficient" evidence of a link at this point. In any
case, women should be told that this possible link to breast cancer is
yet another reason to avoid contact with secondhand smoke.
Are menthol cigarettes safer than other
brands?
Menthol cigarettes are not safer than any
other brand. In fact, they may even be more dangerous. About one fourth
of all cigarettes sold in the United States are flavored with menthol.
These cigarettes are especially popular among African Americans. The
added menthol produces a cooling sensation in the throat when the smoke
is inhaled. It also decreases the cough reflex and covers the dry throat
feeling that smokers often have. People who smoke these cigarettes can
inhale deeper and hold the smoke in longer.
A recent study showed that people who
smoke menthol cigarettes are less likely to try to quit and are less
likely to be successful when they do try. This study proposed that
menthol smokers might want to switch to non-menthol cigarettes before
trying to quit in order of improving their chances to quit smoking.
Are spit tobacco and snuff safe
alternatives to cigarette smoking?
There are many terms used to describe
spit tobacco, such as oral, smokeless, chewing, and snuff tobacco. The
use of spit tobacco by any name is a significant health risk. It is a
less lethal substitute for smoking cigarettes. However, less lethal is a
far cry from safe. The amount of nicotine absorbed is usually more than
the amount delivered by a cigarette. Overall, people who dip or chew
receive about the same amount of nicotine as regular smokers. The most
harmful cancer-causing substances in spit tobacco are tobacco-specific
nitrosamines (TSNAs), which have been found at levels 100 times higher
than the nitrosamines that are allowed in bacon, beer, and other foods.
These carcinogens cause lung cancer in experimental animals, even when
injected.
The juice from the smokeless tobacco is
absorbed directly through the lining of the mouth. This creates sores
and white patches (called leukoplakia) that often lead to cancer of the
mouth.
Spit tobacco users greatly increase their risk of
other cancers including those of the pharynx (throat). Other effects of
spit tobacco use include chronic bad breath, stained teeth and fillings,
gum disease, tooth decay, tooth loss, tooth abrasion, and loss of bone
in the jaw. Users may also have problems with high blood pressure and be
at increased risk for heart disease.
What are the health risks of smoking
pipes or cigars?
Many people view cigar smoking as more "civilized" and
"glamorous," as well as less dangerous than cigarette smoking.
Yet a single large cigar can contain as much tobacco
as an entire pack of cigarettes.
Most of the same cancer-causing
substances found in cigarettes are found in cigars. Most cigars have as
much nicotine as several cigarettes. When cigar smokers inhale, nicotine
is absorbed as rapidly as it is with cigarettes. For those who do not
inhale, it is absorbed more slowly through the lining of the mouth. Both
inhaled and non-inhaled nicotine are highly addictive.
Smoking cigars causes cancers of the
lung, oral cavity (lip, tongue, mouth, and throat), larynx (voice box),
esophagus, and probably cancers of the bladder and pancreas. Cigar
smokers have a greater risk of dying from cancer of the oral cavity,
larynx, or esophagus compared with nonsmokers. The risk of death from
lung cancer is not as high as it is for cigarette smokers, but is still
several times higher than the risk for nonsmokers.
Cigar smokers who inhale deeply and smoke
several cigars a day are also at increased risk for heart disease and
chronic lung disease.
Pipe smokers are at increased risk of
dying from cancers of the lung, throat, esophagus, larynx, pancreas,
colon and rectum. They are also at increased risk of dying of heart
disease, stroke, and chronic lung disease. The level of these risks
seems to be about the same as that for cigar smokers.
Smoking cigars or pipes is not a safe
alternative to smoking cigarettes.
What about more "exotic" forms of smoking
tobacco, such as clove cigarettes, bidis, and hookahs?
Several
forms of flavored tobacco have become popular in recent years,
especially among younger people. Clove cigarettes (kreteks), bidis, and,
more recently, hookahs, often appeal to those who want something a
little different. They also provide young people with another way to
experiment with tobacco. The false image of these products as clean,
natural, and safer than conventional cigarettes seems to attract some
young people who may otherwise not start smoking. But these products
carry many of the same risks of cigarettes and other tobacco products
and each has its own additional problems associated with it.
Clove
cigarettes,
also called kreteks, are imported mainly from Indonesia and
contain 60% to 70% tobacco and 30% to 40% ground cloves, clove
oil, and other additives. The chemicals in cloves have been implicated
in cases of asthma and other lung diseases. Users often have the
mistaken notion that smoking clove cigarettes is a safe alternative to
smoking tobacco. But they are a tobacco product with the same health
risks as cigarettes and,
in fact, have been shown to deliver more nicotine, carbon monoxide, and
tar than conventional cigarettes.
Bidis
or "beedies" are flavored cigarettes imported
mainly from India. They are hand-rolled in an unprocessed tobacco leaf
and tied with colorful strings on the ends. Their popularity has grown
in recent years in part because they come in a variety of candy-like
flavors such as strawberry, vanilla, and grape, they are usually less
expensive than regular cigarettes, and they often give the smoker an
immediate buzz.
Even
though bidis contain less tobacco than regular cigarettes, they have
higher levels of nicotine (the addictive chemical in tobacco) and other
harmful substances such as tar and carbon monoxide. Because they are
thinner than regular cigarettes, they require about 3 times as many
puffs per cigarette. They are also unfiltered. Bidis appear to have all
of the same health risks of regular cigarettes, if not more. Bidi
smokers have much higher risks of heart attacks, chronic bronchitis, and
some cancers than nonsmokers.
Hookah
(or narghile) smoking, which started in the Middle East, involves
burning flavored tobacco in a water pipe and inhaling the smoke through
a long hose. It has recently become popular among young people,
especially around college campuses. Hookah smoking is usually a social
event that allows conversation to take place among the smokers as they
pass the shared pipe around. It is marketed as being a safe alternative
to cigarettes because the percent of tobacco in the product smoked is
low. This claim for safety is false. The water
does not filter out many of the toxins, and hookah smoke contains
varying amounts of nicotine, carbon monoxide, and other hazardous
substances. Several types of cancer have been linked to hookah smoking.
Hookah is also linked to other unique risks not associated with
cigarette smoking. For example, infectious diseases can be spread by
pipe sharing or the uncontrolled, manual preparation of the tobacco
used.
All forms
of tobacco are dangerous. Even if the health risks were smaller for some
tobacco products as opposed to others, all tobacco products contain
nicotine, which can lead to increased use and addiction. Tobacco cannot
be considered safe in any amount or form.
Women and Smoking
An Epidemic...
In March 2001, the Office of the US
Surgeon General released a long-awaited, detailed report
entitled "Women and Smoking," along with the following
statement:"When calling attention to public health problems, we
must not misuse the word 'epidemic.' But there is no better word
to describe the 600% increase since 1950 in women’s death rates
for lung cancer, a disease primarily caused by cigarette
smoking. Clearly, smoking-related diseases among women is a
full-blown epidemic." -- David Satcher, MD, PhDSmoking is the
most preventable cause of early death in this country. According
to the Centers for Disease Control and Prevention (CDC),
smoking-related diseases caused the deaths of about 178,000
women in each year from 1995-1999. On average, these women died
14.5 years earlier because they smoked.The
CDC survey (from 2004) showed that about 1 in 5 American women
aged 18 years or older (19%) smoked cigarettes. The highest
rates were seen among American-Indian and Alaska-Native women
(29%), followed by white (20%), African-American (17%), Hispanic
(11%), and Asian women (5%). The less education a woman has, the
more likely she will smoke. For instance, women with less than a
high school education are twice as likely to smoke as college
graduates.
Overall, women are less likely to
smoke than men, but it is a disturbing trend that smoking is
more popular among younger than older women. About 22% of women
ages 18 to 44 smoke, but only about 8% of women 65 and over do.
As these younger women age and continue to smoke, they will have
more smoking-related illness and disability. Women who smoke
typically begin as teenagers -- usually before high school
graduation. And the younger a girl is when she starts, the more
heavily she is likely to use tobacco as an adult. Teenage girls
are just as likely to smoke as are boys. The most recent CDC
survey (from 2004) showed that 22% of female high school
students and 9% of girls in middle school had smoked at least
one cigarette in the past 30 days.
|
How
Can Smoking Affect Your Health?
Cancers
Tobacco use accounts for nearly one third of all cancer
deaths. Tens of thousands of women will die this year from lung cancer,
which has greatly surpassed breast cancer as the leading cause of cancer
death among women. More than 90% of these deaths will be due to smoking.
In addition to increasing the risk for lung cancer, smoking is a risk
factor for cancers of the cervix, mouth, larynx (voice box), pharynx
(throat), esophagus, kidney, bladder, pancreas, and stomach. It is also
connected to some forms of leukemia. Environmental tobacco smoke (ETS),
also known as secondhand smoke, has been shown to increase the risk of
lung cancer. The 2006 Surgeon General's report on secondhand smoke
concluded the following:
-
Secondhand smoke causes premature
death and disease in children and adults who do not smoke.
-
Children exposed to secondhand smoke
are at an increased risk for sudden infant death syndrome (SIDS),
respiratory infections, ear problems, and more severe asthma.
-
Exposure of adults to secondhand
smoke has immediate negative effects on the cardiovascular system
and causes coronary heart disease and lung cancer.
-
The scientific evidence shows there
is no risk-free level of exposure to secondhand smoke.
-
Many millions of Americans, both
children and adults, are still exposed to secondhand smoke in their
home and workplaces even though there has been substantial progress
in tobacco control.
-
Getting rid of smoking in indoor
spaces fully protects nonsmokers from exposure to secondhand smoke.
Separating smokers from nonsmokers, cleaning the air, and
ventilating a building cannot eliminate exposures of nonsmokers to
secondhand smoke.
Heart Disease and Stroke
Women who smoke greatly increase their
risk of heart disease (the leading killer among women) and stroke. Risk
increases with the number of cigarettes smoked and the length of time
smoked. Even though most of the women who die of heart disease are past
menopause, smoking increases the risk more in younger women than in
older women. Some studies suggest that smoking cigarettes dramatically
increases the risk of heart disease among younger women who are also
taking birth control pills. Smoking is also linked to peripheral
vascular disease, a narrowing and hardening of major blood vessels in
the body. These risks can be reversed after 10 to 15 years of quitting
smoking.
Lung Function
Smoking
damages the airways and small air sacs in the lungs, and is related to
chronic coughing and wheezing. About 90% of deaths due to chronic
bronchitis and emphysema -- collectively known as chronic obstructive
pulmonary disease (COPD) -- are caused by smoking. The risk increases
both with the number of cigarettes smoked each day and with the length
of time a woman has been smoking. Female smokers aged 35 or older are
almost 13 times more likely to die from emphysema or bronchitis. Smoking
"low tar" or "light" cigarettes does not seem to reduce these risks, or
any of the other health risks of tobacco. Teenage girls who smoke have
reduced rates of lung growth and adult women who smoke have an early
decline of lung function.
Other Health Problems
Women who
smoke, especially after going through menopause, have lower bone density
and a higher risk for fracture, including hip fracture, than women who
do not smoke. They may also be at higher risk for developing rheumatoid
arthritis and cataracts (clouding of the lenses of the eyes).
Your Reproductive Health
Tobacco
use can damage a woman's reproductive health. Women who smoke have an
increased risk for delayed conception and fertility problems. Smokers
are younger at menopause than nonsmokers and may have more unpleasant
symptoms while going through menopause. Smoking can also cause
complications during pregnancy that can hurt both mother and baby.
Smokers have a higher risk of the placenta growing too close to the
opening of the uterus. Smokers are also more likely to have premature
membrane ruptures and placentas that separate from the uterus too early.
Bleeding, premature delivery, and emergency Caesarean section
(C-section) may result from these problems. Smokers are also more likely
to have miscarriages and stillbirths.
What's in a Cigarette?
Nicotine |
Nicotine is the main addictive ingredient in
tobacco. Nicotine activates the synthesis of a chemical
called dopamine in the brain. The effects of nicotine on the
body are "biphasic," in that it can both stimulate and relax
you. |
Acetone |
This is also used as a solvent to remove nail
varnish. |
Ammonia |
Boosts the impact of nicotine. |
Tar |
Every time you smoke a cigarette, tar is
deposited into the lungs. Heavy smokers (20+ cigarettes
/day) can accumulate more than a pound of tar in their lungs
each year. |
Benzene |
Benzene is used as a solvent in fuel and
dyes. It is also carcinogenic. |
Cadmium |
Cadmium is used to make batteries; it is
damaging to the kidney and increases the risk of developing
lung cancer. |
While a single cigarette contains up to 599
additives, of which many may seem to be harmless, it is the burning
of these chemicals that produces toxic and carcinogenic compounds –
more than 4000 of them. The negative health effects of smoking
cigarettes can be devastating - just look at the compounds being
inhaled with each puff.
Here is a list of the main
cigarette ingredients
that are the most noxious:
What's in Cigarette Smoke?
If you thought the stuff in cigarettes was bad, wait 'til
you burn it! It's alarming to know how many harmful chemicals are
contained in cigarette smoke. The combination of them leads only to
inevitable smoking-related disease and ultimately death. There are 43
known carcinogens contained in mainstream cigarette smoke, side-stream
smoke, or both.
Here is a list of the more noxious chemicals found in
cigarette smoke:
Hydrogen
cyanide |
This is a colorless-to-blue vapor, which can
cause death within minutes if breathed in large
concentrations. It is used as a pesticide and fumigant to
kill rats. Breathing small amounts of it can cause headache,
dizziness, weakness, nausea, and vomiting. |
Ammonia |
Ammonia is used in cigarettes to boost the
impact of nicotine ("free-basing"). Ammonia can be
irritating to the skin, eyes, nose, throat, and lungs. |
Carbon
monoxide (CO) |
Carbon monoxide is a colorless, odorless gas
which when inhaled reduces the body's ability to carry
oxygen. Cigarette smoke can contain high levels of this gas.
Breathing low levels of CO can cause fatigue while
increasingly higher concentrations can lead to headache,
nausea, confusion, disorientation, and eventually death. |
Nitrogen oxides |
Nitrogen oxides also contribute to air
pollution and acid rain. |
'Natural Tobacco' Poses Greater Health
Risks
Do not be fooled by "natural tobacco"
products that are marketed to teens and college students. They're not
healthier. In fact, natural tobacco can be deadlier than average
cigarettes.
Unfortunately, for today's youth and
young adults, forms of natural tobacco, including bidis, clove
cigarettes, cigars, little cigars, cigarillos, chew/dip tobacco, pipe
tobacco and organic cigarettes, are viewed as trendy and perhaps even
healthier, despite the real health risks.
"Natural tobacco doesn't have anything
to do with being healthier," says Ross Payson, project director for
tobacco programs at the Dental Health Foundation. "Natural means it has
a small percentage of non-synthetic substances. It's a marketing scam."
Natural tobacco often contains higher
concentrations of tar and nicotine, and the smoke has greater levels of
toxic agents such as carbon monoxide, hydrogen cyanide, ammonia and
carcinogenic hydrocarbons. This not only increases the smoker's risk of
developing lung cancer or other diseases, but it also jeopardizes the
health of everyone in the room.
"You're still inhaling carbon monoxide
and 400 carcinogens and poisons," Payson says.
American Lung Associations in
California and other groups, including the Dental Health Foundation and
the California Youth Advocacy Network, are implementing new programs and
adjusting others to combat the rise in natural tobacco use by teens and
college students, and the ultimate disease and premature death it will
cause.
New Study Shows 40 Percent of Teens Have Smoked Bidis
A recent report released by the Centers for Disease
Control and Prevention (CDC) found in a Boston-area study of 642 high
school students that 40 percent had tried bidis and 16 percent were
current bidi smokers.
"Natural tobacco is an up and coming issue," says
Jennifer Williams, director of Tobacco Control for the American Lung
Association of the Central Coast. "We found that older and younger teens
are asking about bidis and cloves because they think they are a lot
safer than cigarettes."
Bidi cigarettes, also known as beadies or beedies, are
handrolled tendu leaves containing low-grade tobacco and tied up with
string. Widely available in grocery stores and convenience stores for
about half the cost of cigarettes, the paper-wrapped bundles of bidis
come in several flavors including Cinnamon, Chocolate, Vanilla and
Strawberry.
Nearly 70 percent of bidi brands do not have warning
labels as required by law, according to a Dental Health Foundation fact
sheet.
Bidis are known as the "poor man's cigarette" in
India. They are made by women and children in India's poor households,
according to research compiled by the Dental Health Foundation. In
addition to a lack of health precautions and poor working conditions, it
has been shown that bidi assemblers absorb nicotine through their skin.
"Teens are aware of the health risks from smoking
tobacco and it may not have an impact," Payson says. "But I think it
would have more of an impact if they knew that children in India roll
1,000 to 1,500 bidis a day, for 30 cents per day in a 12 to 16-hour work
day. They work under poor conditions and there is no quality assurance."
American Lung Association Fights Dangerous Trend
To combat this dangerous rise in bidi smoking,
American Lung Associations throughout the state are implementing Teens
Against Tobacco Use (TATU), in cooperation with the American Heart
Association and the American Cancer Society. The all-day training and
education workshop trains teens how to talk to children about the
dangers and myths about tobacco.
"We found that using teens as anti-tobacco educators
for elementary school children is more effective than using adults,"
Williams says.
More than 90 percent of adult smokers started smoking
in their teens, resulting in the creation of tobacco control programs
that focus on early prevention in junior high and high school. There are
very few prevention and cessation programs for young adults ages 18 to
25.
"Mind the Gap" is an advocacy project implemented by
the American Lung Association of Santa Clara-San Benito Counties
focusing on college students in that age category on seven college
campuses in Santa Clara and San Benito counties. The project focuses on
education and prevention.
"Our goal is to make campuses smoke-free," says
Francis Capili, project director at the American Lung Association of
Santa Clara-San Benito Counties. "We want to protect people from
secondhand smoke and limit tobacco accessibility."
Tobacco Companies Target Colleges with Sponsorships
"Some tobacco companies are targeting colleges by
sponsoring fraternity parties and giving away free chew tobacco," says
Susan Snoke, college project consultant for the California Youth
Advocacy Network.
Snoke is part of a three-year project to develop
student advocacy coalitions at California schools, including the
University of California at Davis, University of California at Santa
Cruz, Sonoma State University, San Diego State University and Vanguard
University of Southern California.
The coalitions are implemented and facilitated by
college students who determine which campus smoking policies and issues
to address. Marie Boman, a college liaison for anti-tobacco advocacy at
San Diego State University (SDSU), led a movement to enforce SDSU's no
smoking policy in a specific campus building. She was able to get the
college to remove cement ashtrays from the breezeways and the doorways
to prevent smoke from flowing inside the building.
Boman volunteers for the American Lung Association and
believes tobacco companies are currently targeting colleges for cigars,
clove cigarettes and chew/dip tobacco.
"There's a misconception in defining cloves as
natural," Boman says. "Clove cigarettes are processed just like regular
cigarettes." Clove cigarettes are typically made of 60 percent poor
quality tobacco. They deliver twice as much nicotine, tar and carbon
monoxide as tobacco cigarettes in addition to the unknown hazards
associated with chemicals in cloves. Clove cigarette smokers can suffer
immediate effects including coughing up blood, nose bleeds, severe sore
throats, and upper respiratory infections.
Cigar Smokers More Likely to Develop Cancer
Although cigars may also be marketed as a natural and
safer alternative to cigarettes, they contain larger amounts of nicotine
and carcinogens. A bill requiring cigar manufacturers to add labels
comparing the danger of cigar smoking with cigarettes or warning smokers
of cancer and other diseases was passed by the state Legislature.
"It seems that cigars are also being pushed on college
campuses to the 18 to 24-year-old men and women," Payson says. "Cigars
are marketed to portray cigar smokers as affluent, powerful and sexy."
Cigar smokers are four to 10 times more likely than
non-smokers to die of cancer of the mouth and throat.
Cigarettes can contain 11 milligrams of nicotine while a
cigar can contain as much as 444 milligrams. Cigars also give off five
times as much tar and 25 times more carbon monoxide than a cigarette.
So even cigar smokers who say they don't inhale are
risking their health. Not only are they choking on their own secondhand
smoke, along with everyone else in the room, cigar smokers suffer higher
rates of cancer and other diseases.
"Smoking, is smoking," Payson says. "Tobacco, no
matter the form, is poisonous and addictive to all ages."
Source of reference: Internet. |
|