Imagine three jumbo jets filled to
capacity crashing in the United States every single day, 365 days a year,
killing everyone on board. Horrific to think about, but this example represents
the number of precious lives lost to tobacco day in and day out in the United
States alone. Unfortunately, cigarette smoking still tops the list as the most
preventable cause of death in the United States today, accounting for 438,000
deaths annually. Estimates from the Centers for Disease Control for 2007 tell
us that 20.8% of the U.S. adult population, or 45.3 million people, currently
smoke cigarettes.
Nicotine is Highly Addictive
The nicotine in inhaled tobacco
smoke moves from the lungs, into the bloodstream and up to the smoker's brain
within 7 to 10 seconds. Once there, nicotine triggers a number of chemical
reactions that create temporary feelings of pleasure for the smoker, but these
sensations are short-lived, subsiding within minutes. As the nicotine level
drops in the blood, smokers feel edgy and agitated -- the start of nicotine withdrawal. So, in order to relieve the
discomforts, smokers light up another cigarette...and then another..and
another. And so it goes -- the vicious cycle of nicotine addiction. One
cigarette is never enough, a fact that every smoker knows all too well.
In
order to quit smoking successfully for the long term, it helps to understand
the nature of nicotine addiction and what it takes to break free of it. In
fact, smokers are often surprised to learn that they are addicted to a substance. Many of us
believed that smoking was just a bad habit; something we could stop easily when
we decided it was time.
Let's
take a look at how nicotine affects brain chemistry and begin the educational
process that will help us battle this addiction to the ground, once and for
all.
Nicotine and Adrenaline
When a person inhales cigarette
smoke, the nicotine in the smoke is rapidly absorbed into the blood and starts
affecting the brain within 10 seconds. The result is the release of adrenaline,
the "fight or flight" hormone.
Physically, adrenaline increases a person's heart rate, blood pressure and
restricts blood flow to the heart muscle. When this occurs, the smoker
experiences rapid, shallow breathing and the feeling of a racing heartbeat.
Adrenaline also instructs the body to dump excess glucose into the bloodstream.
Nicotine and Insulin
Nicotine also inhibits the release
of insulin from the pancreas, a hormone that is responsible for removing excess
sugar from a person's blood. This leaves the smoker in a slightly hyperglycemic condition, meaning he has more
sugar in his blood than is normal. High blood sugar acts as an appetite
suppressant, which may be why smokers think their cigarettes reduce hunger.
Nicotine and Dopamine
Nicotine activates the same reward pathways
in the brain that other drugs of abuse such as cocaine or amphetamines do,
although to a lesser degree. Research has shown that nicotine increases the
level of dopamine in the brain, a neurotransmitter that is responsible for feelings
of pleasure and well-being. The acute effects of nicotine wear off within
minutes, so people must continue dosing themselves frequently throughout the
day to maintain the pleasurable effects of nicotine and to prevent withdrawal
symptoms.
The Chemicals in Cigarettes
In addition to nicotine, cigarette
smoke is composed of more than 4000 toxic chemicalsand tar. The tar in a cigarette, which
can be as much as 22 mg in a high-tar cigarette to 7 mg in a low-tar cigarette,
exposes smokers to an increased risk of lung cancer, emphysema, and bronchial
disorders.
The carbon monoxide in cigarette smoke
increases the chance of cardiovascular diseases. The Environmental Protection
Agency has concluded that secondhand smoke causes lung cancer in adults and
greatly increases the risk of respiratory illnesses in children and sudden
infant death.
Quit Smoking Now - You Can Do It
Statistics show that only a small
percentage (approximately 7%) of people who try to quit smoking without support are still smoke-free
a year later. However, those with a quit program in place that includes
education about nicotine addiction and a solid support group, do much better.
Your Quit Smoking
Toolbox
Smoking Cessation
Support Forum
Whether
you prefer to quit cold turkey or choose
to use a quit aid to help you stop
smoking, realize this:
Recovery from nicotine addiction is
a process of gradual release over time.
It doesn't happen overnight, but with perseverance, freedom from nicotine
addiction is doable, and will pay you back with benefits that go well beyond
what you can probably imagine. Don't offer up another day of your precious life
to tobacco - stop smoking today.
Courtesy By: Adult Cigarette Smoking in the United States