THE EFFECTS OF SMOKING ON YOUR BODY
Starting at the Top
As a smoker, you're at risk for cancer of the mouth. Tobacco smoke can also cause gum disease, tooth decay and bad breath. The teeth become unsightly and yellow. Smokers may experience frequent headaches. And lack of oxygen and narrowed blood vessels to the brain can lead to strokes.
Lungs and Bronchi
Moving down to your chest, smoke passes through the bronchi, or breathing tubes. Hydrogen cyanide and other chemicals in the smoke attack the lining of the bronchi, inflaming them and causing that chronic smoker's cough. Because the bronchi are weakened, you're more likely to get bronchial infections. Mucus secretion in your lungs is impaired, also leading to chronic coughing. Smokers are 10 times as likely to get lung cancer and emphysema as nonsmokers.
Smoking and the Heart
The effects of smoking on your heart are devastating. Nicotine raises blood pressure and makes the blood clot more easily. Carbon monoxide robs the blood of oxygen and leads to the development of cholesterol deposits on the artery walls. All of these effects add up to an increased risk of heart attack. In addition, the poor circulation resulting from cholesterol deposits can cause strokes, loss of circulation in fingers and toes and impotence.
Smoking and the Body's Organs
The digestive system is also affected. The tars in smoke can trigger cancer of the esophagus and throat. Smoking causes increased stomach acid secretion, leading to heartburn and ulcers. Smokers have higher rates of deadly pancreatic cancer. Many of the carcinogens from cigarettes are excreted in the urine where their presence can cause bladder cancer, which is often fatal. High blood pressure from smoking can damage the kidneys.
The health effects of smoking have results we can measure. Forty percent of men who are heavy smokers will die before they reach retirement age, as compared to only 18 percent of nonsmokers. Women who smoke face an increased risk of cervical cancer, and pregnant women who smoke take a chance with the health of their unborn babies.
But the good news is that when you quit smoking your body begins to repair itself. Ten years after you quit, your body has repaired most of the damage smoking caused. Those who wait until cancer or emphysema has set in aren't so lucky—these conditions are usually fatal. It's one more reason to take the big step and quit now.
Inside a Smoker’s Body
Eyes, Nose, Throat
Within a few seconds of your first puff, irritating gases (formaldehyde, ammonia, hydrogen sulfide, and others) begin to work on sensitive membranes of your eyes, nose, and throat. They make your eyes water and your nose run. They irritate your throat. If you continue smoking, these irritating gases will eventually produce a smoker’s cough. One of the reasons many smokers prefer menthol cigarettes is that menthol is an anesthetic that masks the smoker’s perception of this irritation.
Continued smoking produces abnormal thickening in the membranes lining your throat. This thickening is accompanied by cellular changes that have been linked to throat cancer.
Why Smokers Frequently Experience a Morning Cough
Because you haven’t smoked all night, the cilia in your bronchi, which were knocked out of action by the toxic effects of cigarette smoke the day before, begin to come to life and attempt to clear the accumulated mucus out of your air passages. This cleansing action brings up a thick yellow or yellow-green mucus, which triggers the cough reflex in the back of your throat.
From your very first puff, the smoke begins to chip away at your lung’s natural defenses. Continued exposure can completely paralyze the lungs’ natural cleansing process.
Your respiratory rate increases, forcing your lungs to work harder.
Irritating gases produce chemical injury to the tissues of your lungs and the airways leading to the lungs. This speeds up the production of mucus and leads to an increased tendency to cough up sputum.
This excess mucus serves as a breeding ground for a wide variety of bacteria and viruses. The makes you more susceptible to colds, flu, bronchitis, and other respiratory infections. And if you do come down with an infection, your body will be less able to fight it, because smoking impairs the ability of the white blood cells to resist invading organisms.
The lining of your bronchi begins to thicken, predisposing you to cancers of the bronchi. Most lung cancers arise in the bronchial lining.
Farther down, inside your lungs, the smoke weakens the free-roving scavenger cells that remove foreign particles from the air sacs of the lungs. Continued smoke exposure adversely affects elastin (the enzyme that keeps your lungs flexible), predisposing you to emphysema.
Many of the compounds you inhale are deposited as a layer of sticky tar on the lining of your throat and bronchi and in the delicate air sacs of your lungs. A pack-a-day smoker pours about eight ounces—the one full cup—of tar into his or her lungs each year. This tar is rich in cancer-producing chemicals, including radioactive poloniumm 210.
Experiment: Breathe in a full mouthful of smoke, but don’t inhale. Blow the smoke out through a clean white handkerchief is roughly equivalent to the amount each puff leaves in your lungs.
From the moment smoke reaches your lungs, your heart is forced to work harder. Your pulse quickens, forcing your heart to beat an extra 10 to 25 times per minute, as many as 36,000 additional times per day.
Because of the irritating effect of nicotine and other components of tobacco smoke, your heartbeat is more likely to be irregular. This can contribute to cardiac arrhythmia, and many other serious coronary conditions, such as heart attack. A recent Surgeon General’s report estimated that about 170,000 heart attacks each year are caused by smoking.
Your blood pressure increases by 10 to 15 percent, putting additional stress on your heart and blood vessels, increasing your risk of heart attack and stroke.
Smoking increases your risk of vascular disease of the extremities. Severe cases may require amputation. This condition can produce pain and can increase your risk of blood clots in the lungs.
Smoking constricts the blood vessels in your skin, decreasing the delivery of life-giving oxygen to this vital organ. As the result of this decrease in blood flow, a smoker’s skin becomes more susceptible to wrinkling. This decreased blood flow can be a special problem in people who suffer from chronically cold hands and/or feet (Raynaud’s Syndrome).
Smokers are at particularly high risk for a medical syndrome called “smoker’s face,” which is characterized by deep lines around the corners of the mouth and eyes, a gauntness of facial features, a grayish appearance of the skin, and certain abnormalities of the complexion. In one study, 46 percent of long-term smokers were found to have smoker’s face.
Carbon monoxide—the colorless, odorless, deadly gas present in automobile exhaust—is present in cigarette smoke in more than 600 times the concentration considered safe in industrial plants. A smoker’s blood typically contains 4 to 15 times as much carbon monoxide as that of a nonsmoker. This carbon monoxide stays in the bloodstream for up to six hours after you stop smoking. A 1982 University of Pittsburgh health survey found that nearly 80 percent of cigarette smokers had potentially hazardous levels of carbon monoxide in their blood. Research suggests that these abnormally high carbon monoxide levels may play a major role in triggering heart attacks.
When you breathe in a lung-full of cigarette smoke, the carbon monoxide passes immediately into your blood, binding to the oxygen receptor sites and figuratively kicking the oxygen molecules out of your red blood cells. Hemoglobin that is bound to carbon monoxide is converted into carboxyhemoglobin, and is no longer able to transport oxygen. This means that less oxygen reaches a smoker’s brain and other vital organs. Because of this added carbon monoxide load, a smoker’s red cells are also less effective in removing carbon dioxide—a waste product—from his or her body’s cells.
If you continue to smoke for several weeks, your number of red cells begins to increase, as your body responds to chronic oxygen deprivation. This condition, characterized by an abnormally high level of red blood cells, is known as smoker’s polycythemia. In addition, smoking makes your blood clot more easily. Both of these factors may increase your risk of heart attack or stroke.
Male Reproductive System
Two recent studies by Dr. Irving Goldstein and colleagues at the New England male Reproductive Health Center, Boston University Medical School, found a possible link between smoking and erection problems. In the first study, the researchers found that among a population of 1,011 men with erection problems, 78 percent were smokers—more than twice the number of men with erection problems found in the general population. The researches concluded that decreased potency might result from the negative effects of smoking on the blood vessels leading to the male reproductive organs.
In their second study, the researchers measured the blood flow to the penis in 120 men who had come to their clinic with erection problems. They found that decrease in blood flow was proportional to the number of cigarettes smoked. Dr. Goldstein believes that smoking is the leading cause of impotence in the U.S. today.
In addition to diminishing potency, smoking adversely affects the fertility of male smokers by decreasing sperm count and sperm motility as well as altering sperm shape.
Female Reproductive System
Women who smoke heavily show a 43 percent decline in fertility. Women smokers are three times more likely than nonsmokers to be infertile. Women who smoke also have fewer reproductive years: They reach menopause an average of 1 ¾ years earlier than nonsmokers.
Smokers’ Bodies Get Less Oxygen
Because carbon monoxide lowers your blood oxygen carrying capacity, the blood delivers less oxygen to all the organs of the body. At the cellular level, oxygen is used to supply organs with the energy they need. Less oxygen means less energy.
In addition, more than thirty cancer-causing chemicals travel via the smoker’s bloodstream to every organ of the body. The organs most sensitive to these carcinogens are the stomach, the kidneys, the bladder, and the cervix.
Cigarette smoking also weakens the immune system by depressing antibody response and depressing cell-mediated reactions to foreign invaders. As a result, smokers are more susceptible to a variety of infections. These impairments are reversible if the smoker stops smoking.
Why Smoking makes You Less Fit
Although a smoker’s blood carries less oxygen, the nicotine in tobacco smoke increases the heart rate, requiring more oxygen. This is why smokers become short of breath more easily than nonsmokers. The high concentration of carbon monoxide also reduces the level of oxygen that is carried to the brain. This can produce lethargy, confusion, and difficulty in thinking.
Smoking Impairs Taste and Smell
Continued smoking will also result in a loss of your senses of taste and smell. This occurs so gradually that it may go unnoticed, but the end result is the decreased sensitivity of two very important sense perceptions
IS THIS ENOUGH INFORMATION TO TURN YOU FROM A SMOKER TO A NON-SMOKER?