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People with asthma are more likely to have symptoms of depression. A new study suggests these symptoms are linked to a host of other negative health risks that may lead to a worsening of asthma symptoms and an overall decline in health. “People who are depressed are more likely to…have a harder time doing things that help maintain good health,” said Aviva Goral of the Gertner Institute for Epidemiology and Health Policy Research in Israel, the corresponding author of a study appearing online in the journal General Hospital Psychiatry.

Infants who live in “moldy” homes are three times more likely to develop asthma by age 7 — an age that children can be accurately diagnosed with the condition. Study results are published in the August issue of Annals of Allergy, Asthma & Immunology, the scientific journal of the American College of Allergy, Asthma and Immunology (ACAAI).

Children whose mothers had high exposure to magnetic fields (MF) during pregnancy appear to have an increased risk of developing asthma, according to a report published Online First today by Archives of Pediatrics and Adolescent Medicine, one of the JAMA/Archives journals. The study was conducted by De-Kun Li, M.D., Ph.D., and colleagues from Kaiser Permanente, Oakland, California.

In a follow-up of extremely low-birth-weight children, the rates of chronic health conditions overall, and asthma specifically, did not change between the ages of 8 and 14 years, although the rate of obesity did increase, according to a study in the July 27 issue of JAMA. The research was carried out by Maureen Hack, M.B., Ch.B., of Case Western Reserve University, Cleveland, and colleagues.

A UK academic is calling for a nationwide study into the effects traffic pollution has on asthma sufferers after his own research in Cairo highlighted health problems in children who may even be affected while still in the womb. Dr. Mohammad Shamssain and his research team recently completed a study into the impact that high levels of air traffic pollution has on schoolchildren’s respiratory systems, allergies, and conditions such as asthma.

Vitamin D, which is primarily absorbed from the sun, plays a role in protection against childhood asthma. Now, a new study led by Valencian researchers has shown that children who live in colder, wetter cities are at greater risk of suffering from this respiratory problem since there are fewer hours of sunlight in such places. The results are published in the International Journal of Biometeorology.

Children whose mothers or grandmothers smoked during pregnancy are at increased risk of asthma in childhood, but the underlying causes of this are not well understood. Now a new study indicates changes in a process called DNA methylation that occurs before birth may be a root cause. The study will be presented at the ATS 2011 International Conference.

Workplace smoking bans are gaining ground globally, and one study has shown that they may have significant health effects. The study, conducted by researchers in Dublin, found that emergency room admissions due to respiratory illness dropped significantly in Ireland after the implementation of a workplace smoking ban, compared to admissions that took place before the ban went into effect. The study will be presented at the ATS 2011 International Conference in Denver.

An impaired ability to handle oxidative stress that arises from exposure to secondhand smoke and other environmental triggers may contribute to the development of asthma, according to results obtained from the Shanghai Women’s Health Asthma and Allergy Study. The results of the study suggest regulating the body’s antioxidant defense system may play an important role in asthma prevention. The study will be presented at the ATS 2011 International Conference.