The smoking gun
When people think of
the hazards of smoking, lung cancer or emphysema typically comes to mind.
The truth is smoking harms nearly every organ of the body and takes a
particularly hard toll on the heart, causing coronary heart disease and
stroke, the first and third leading causes of death in the United States.
In fact, it takes far fewer cigarettes to cause heart disease than to
cause cancer.
How smoking hurts your heart
When you smoke, the toxic ingredients
in cigarettes damage your body in several ways—mutating genes, weakening
blood vessels, altering blood consistency and diminishing cell function.
For example, nicotine speeds heart rate, narrows arteries and makes blood
sticky. Other chemicals in cigarettes bind to the hemoglobin
in red blood cells, reducing their ability to carry
oxygen. Smoking deteriorates artery linings and promotes fat and plaque
deposits. As a result, smoking causes:
• decreased blood flow
• diminished oxygen to
the heart
• higher blood pressure
• faster heart rate
• increased blood clotting
• decreased HDL (good)
cholesterol
The heart truth
Smoking is a major risk factor
for death from coronary heart disease, also causing atherosclerosis (hardening
of the arteries), abdominal aortic aneurysm, sudden cardiac death, congestive
heart failure and peripheral vascular disease. In addition, smoking increases
your risk for diabetes and diminishes your tolerance for exercise, two
more key factors in heart disease. Smokers are twice as likely as nonsmokers
to suffer a stroke and two to four times more likely to develop coronary
heart disease. Women who smoke and use certain types of hormone therapy
increase their risk several times more.
If you don’t smoke but
live with or work among smokers, you’re still at risk. Nonsmokers
regularly exposed to secondhand smoke nearly double their risk for heart
attack.
You control your future
Smoking remains the single most preventable cause of death in the United States.
No matter how many years you’ve smoked, it’s never too late to stop.
Don’t bother with light or low-tar cigarettes; they’re no better
than regular versions and you’ll end up smoking more of them. The only
safe choice is to quit completely. Talk to your healthcare provider about finding
a smoking cessation program for you.
What do you get for quitting?
Better health—and the payoff begins quickly. Within 20 minutes of missing
that next cigarette, your body begins to restore itself by lowering your
heart rate. With each passing smoke-free day, your heart health improves.
After 2 to 3 months Blood flow improves.
After 1 year Increased risk for coronary heart
disease is cut in half.
After 5 years Stroke risk is reduced to that of
a nonsmoker.
After 15 years Coronary heart disease risk is reduced
to that of a nonsmoker.
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