Laptop Battery Prolonged exposure to air tainted with tiny particles of soot significantly raises the risk of dying of lung cancer or other lung and heart diseases, according to a new study of 500,000 people in 116 American cities. In fact, the authors say, many city residents face a long-term risk of fatal lung cancer similar to that of someone living with a smoker.
Flavonoids have also been associated with a reduced risk of lung cancer and one case control study reported a 50% reduction in lung cancer risk when consuming 1 cup of black tea a day. However, another study that investigated the relationship between catechin intake (a type of flavonoid that is abundant in tea) and lung cancer, found no such association34. Other studies investigating the relationship between tea drinking and lung cancer also reported no association.
Thinkpad Because lung cancer is so rare among nonsmokers, that translates into just two additional lung cancer fatalities per 100,000 people, said a leader of the research project, Dr. George D. Thurston, associate professor of environmental medicine at the New York University School of Medicine. But, Dr. Thurston added, the finding helps suggest a cause for many otherwise unexplained lung cancer deaths and adds urgency to efforts to reduce fine-particle pollution, which comes from power plants and motor vehicles.
health news, news stories, Medications tied to bone deterioration in about 5% of cancer cases, study finds
Microsoft Earlier studies had hinted at a link between fine soot particles and lung cancer. But this one, whose results appear today in The Journal of the American Medical Association, was the first with sufficient breadth (involving the 500,000 subjects) and duration (16 years) to show a strong relationship.
Incidence of lung cancer correlates with dietary fat intake from country to country.11 Some, 12 but not all, 13 preliminary studies report consumption of saturated fat in both meat and dairy fat correlates with the risk of lung cancer, even among nonsmokers.14 Lung cancer risk appears directly related to consumption of foods containing saturated fat–– cooked meat.15 In one trial that was unable to find an association between lung cancer risk and total saturated fat intake, people consuming skim milk nonetheless had a 50% fat milk.16.
Laptop Computers The Environmental Protection Agency has written rules to crack down on soot pollution, but they have been held up by lawsuits brought by the power industry and by vehicle manufacturers and operators. Now, in the aftermath of a Supreme Court ruling favorable to the agency, the regulations could take effect late next year, and a senior E.P.A. official said yesterday that the new study suggested that "we're on the right track" in pressing for them.
However, the vast majority of lung cancer patients are diagnosed when the disease is more advanced than stage I. In a trial studying patients with more advanced disease, supplementation with 300, 000 IU per day for one year followed by 150, 000 IU per day for another year did not reduce lung cancer recurrences.60 Moreover, another trial that studied smokers and workers exposed to asbestos found that daily supplementation with 25, 000 IU of vitamin A plus 50, 000 IU of synthetic carotene (which can act as a vitamin A precursor in the body) for four years led to a slight increase in the risk of getting lung cancer compared to no treatment.61.
Laptop Computer Microscopic soot particles, far smaller than those that collect on urban windowpanes, have increasingly been identified as a leading pollution threat. The average level of them in American cities has declined by more than 30 percent since 1980, a result of existing broader regulations that do not make a target of these fine particles specifically. But a growing body of studies pointing to their threat prompted the environmental agency in 1997 to issue the restrictions subsequently delayed in court.
Untreated, women with lung cancer live longer than men Women with lung cancer are living longer than men, even when the disease is untreated. A new study presented at CHEST 2005, the 71st annual international scientific assembly of the American College of Chest Physicians (ACCP), found that in patients receiving treatment for lung cancer, women had significantly better survival rates than men. However, in untreated patients, women also had a 21 percent decreased risk of death as compared with men, leading researchers to believe lung cancer in women has a different biologic behavior and natural history than in men.
Desktop Computer The average urban level of these particles in 1980 was 21 micrograms per cubic meter of air. In 2000, it was 14 micrograms. The E.P.A. standard would set an average annual limit of 15 micrograms for cities, but even so, experts expect many metropolitan areas to fail to meet the target.
Notebooks The 500,000 adults on whom the new study focused were recruited in 1982 by the American Cancer Society for a lifelong project tracking their lifestyles, diets, work conditions and, ultimately, causes of death.
Lenovo Experts who have spent years analyzing theorized links between pollution and illness generally gave the study high marks.
Hard Drive "One study alone doesn't answer these questions, but it opens the door wider on the issue of lung cancer and pollution," said Daniel S. Greenbaum, president of the Health Effects Institute, a pollution research group in Boston that is financed equally by the E.P.A. and manufacturing industries.
Travelstar Dr. Thurston, co-author of the new study, said it carried both good news and bad.
Gateway "The bad news is that fine-particle air pollution is even more toxic than we thought before," he said. "The good news is we are addressing this problem and there are ways we can further reduce this risk, by moving forward with the Clean Air Act and cleaning up these power plants that are a major source."
Laptop Parts By Andrew C. Revkin
New York Times - 3/6/2002
Topic: Air Pollution
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