Alphabetical list:
A B C D E F G H I J K L M N O P R S T U V W X Y Q Z 1 2 3 4 5 6 7 8 9
News: November 27, 2009
Air Pollution Raises Infants' Risk of Bronchiolitis
November 27, 2009Infants who are exposed to higher levels of air pollution, including vehicle and industrial emissions and wood smoke, are at increased risk for bronchiolitis. The study is unique because it evaluated multiple sources of air pollution and their impact on infants' health.
Bronchiolitis is a common illness of the respiratory tract that is caused by an infection that impacts the minute airways call bronchioles, that lead to the lungs. When these airways become inflamed, they fill with mucus and make breathing difficult. Because infants and young children have especially small airways, they are more susceptible to bronchiolitis. Disease occurrence usually peaks at about 3 to 6 months of age and is more common in children who have not been breastfed.
The new study, which was published in the November 15 issue of the American Journal of Respiratory and Critical Care Medicine, included analysis of nearly 12,000 diagnoses of infant bronchiolitis between 199 and 2002 in southwestern British Columbia. Pollutants monitored included nitric oxide, nitrogen dioxide, carbon monoxide, sulfur dioxide, and particulate matter from monitoring stations within 10 km of where the infants lived.
The researchers found that bronchiolitis was significantly associated to an increased lifetime exposure to specific pollutants. Specifically, with respect to each of the pollutants, the infants' risk increased by 8 percent (nitric oxide), 12 percent nitrogen dioxide) 4 percent (sulfur dioxide), and 13 percent (carbon dioxide). A 6 percent increased risk was found among infants who lived with 50 meters of a highway, and an 8 percent increased risk was associated with wood smoke exposure.
Although the increased risk of bronchiolitis seen in this study was not severe, the authors note that it is important to pay attention to the impact of air pollution because it is so ubiquitous, that bronchiolitis is the main reason children are hospitalized during the first year of life, and that reducing air pollution may be one way to decrease the occurrence of the disease.
Bronchiolitis is often mild, yet some infants are at risk for more severe disease that requires hospitalization. Factors that increase the risk of severe bronchiolitis include prematurity, presence of chronic heart or lung disease, and a weakened immune system associated with illness or medication use. Children who have had bronchiolitis may be more likely to develop asthma later in life as well.
The results of this study may highlight the need for physicians to educate parents about the impact air pollution can have on their infants and how they can avoid it. It also strengthens the relationship between ambient air pollution and the development of respiratory disease among infants and children and why places where children spend a lot of time (e.g., school, playgrounds) should not be near highways and facilities that pollute the air.
SOURCES:
American Thoracic Society
Mayo Clinic
Archive issues: (50)
Archive list: 1 [2] 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
December 12, 2009 | Researchers Find New Drug To Shrink Breast Cancer TumorsBoston (SmartAboutHealth) - Researchers have discovered a new antibody drug that has the ability to shrink breast cancer tumors that other drugs have failed to impact. The study was carried out by ...
December 11, 2009 | Fewer dollars for smoking preventionEven as states pull in billions of dollars in tobacco settlement money - part of which is typically used to fund anti-smoking programs - they're slashing the amount they spend on such programs by 15%. ...
December 9, 2009 | Smoking Kills Millions Worldwide Every YearTobacco use kills at least 5 million people every year, a figure that could rise if countries don't take stronger measures to combat smoking, the World Health Organization said Wednesday. In a new report on tobacco use and control, the U.N. agency said nearly 95 ...
Related articles:
Oral treatment
The cyclic nucleotide phosphodiesterases constitute a group of enzymes that catalyse the hydrolysis of the cyclic nucleotides cyclic AMP and cyclic GMP. They exist in different molecular forms and are unevenly distributed throughout the body. One of the forms of phophodiesterase is termed PDE5. The prescription PDE5 inhibitors ...Section: Erectile Dysfunction
Chronic prostatitis/chronic pelvic pain syndrome - diagnosis
There are no definitive diagnostic tests for CP/CPPS. This is a poorly understood disorder, even though it accounts for 90%-95% of prostatitis diagnoses. It is found in men of any age, with the peak onset in the early 30s. CP/CPPS may be inflammatory (Category IIIa) or non-inflammatory ...Section: Prostatitis
Risk-taking - alcohol consumption behavior
Research on beer commercials by Strate (Postman, Nystrom, Strate, And Weingartner 1987; Strate 1989, 1990) and by Wenner (1991) show some interesting results. In beer commercials, the ideas of masculinity (especially risk-taking) are presented and encouraged. The commercial focuses on a situation where a man is overcoming an obstacle in a group. The men will either be working hard or playing hard. For ...Section: Mens health risks