SMOKING RISKS

Smoking risks

Smoking is recognized as the leading preventable cause of death, causing or contributing to the deaths of approximately 430,700 Americans each year. Anyone with a smoking habit has an increased chance of lung, cervical, and other types of cancer; respiratory diseases such as emphysema, asthma, and chronic bronchitis; and cardiovascular disease, such as heart attack, high blood pressure, stroke, and atherosclerosis (narrowing and hardening of the arteries). The risk of stroke is especially high in women who take birth control pills.
Smoking can damage fertility, making it harder to conceive, and it can interfere with the growth of the fetus during pregnancy. It accounts for an estimated 14% of premature births and 10% of infant deaths. There is some evidence that smoking may cause impotence in some men.
Because smoking affects so many of the body's systems, smokers often have vitamin deficiencies and suffer oxidative damage caused by free radicals. Free radicals are molecules that steal electrons from other molecules, turning the other molecules into free radicals and destabilizing the molecules in the body's cells.


Smoking is recognized as one of several factors that might be related to a higher risk of hip fractures in older adults.
Studies reveal that the more a person smokes, the more likely he is to sustain illnesses such as cancer, chronic bronchitis, and emphysema. But even smokers who indulge in the habit only occasionally are more prone to these diseases.
Some brands of cigarettes are advertised as "low tar," but no cigarette is truly safe. If a smoker switches to a low-tar cigarette, he is likely to inhale longer and more deeply to get the chemicals his body craves. A smoker has to quit the habit entirely in order to improve his health and decrease the chance of disease.
Though some people believe chewing tobacco is safer, it also carries health risks. People who chew tobacco have an increased risk of heart disease and mouth and throat cancer. Pipe and cigar smokers have increased health risks as well, even though these smokers generally do not inhale as deeply as cigarette smokers do. These groups haven't been studied as extensively as cigarette smokers, but there is evidence that they may be at a slightly lower risk of cardiovascular problems but a higher risk of cancer and various types of circulatory conditions.
Recent research reveals that passive smokers, or those who unavoidably breathe in secondhand tobacco smoke, have an increased chance of many health problems such as lung cancer, ischemic heart disease, and asthma; and in children, sudden infant death syndrome. A Swedish study published in 2001 found that people who were exposed to environmental tobacco smoke (ETS) as children were both more likely to develop asthma as adults, and to become smokers themselves. In the fall of 2001 the Environmental Protection Agency (EPA) partnered with the American Academy of Allergy, Asthma, and Immunology (AAAAI) to educate parents about the risks to their children of secondhand smoke, and to persuade parents to sign a Smoke Free Home Pledge. The AAAAI reported that many parents cut down on or gave up smoking when they recognized the damage that smoking was causing to their children's lungs. A study of secondhand smoke in the workplace done by the European Union found that it can affect workers as severely as smoke in the home can affect children. The study noted that workers exposed to secondhand smoke from their colleagues had significantly higher rates of asthma and upper respiratory infections than those who were employed in smoke-free workplaces.