The connection between obesity urban air pollution Facts
Overall, about 17% of U.S. children are obese. In urban areas this number increases to 25%. Of course, the main reasons for such shocking figures are unhealthy diet and physical inactivity, but, as stated in the new study, the School of Public Health at Columbia University Meylmen, it also involved air pollution concerns.
According to the study, the children of pregnant women living in New York and is constantly experiencing the negative impact of high concentrations of polycyclic aromatic hydrocarbons (PAHs), twice as likely to suffer from obesity reaches seven years of age compared to those children whose mothers during pregnancy were living in places with clean air. It is known that PAHs into the air by burning coal, diesel, oil, gas and other organic substances such as tobacco. Hence, the city air as anywhere abounds this harmful substance.
The experiment involved 702 non-smoking women aged 18 to 35 years old, held observation in two clinics in New York. All participants lived in the north or the south of Manhattan, the Bronx, that is not in the most affluent parts of the city, and identified themselves by nationality or to African-American women, or to the Dominican. Within two days of the third trimester of her pregnancy, these women were with him in the city a small backpack with a device that measures the quality of the air around them. Night backpack was next to the place of sleep.
Continuing to explore the children of women breathing air containing PAHs, were able to determine that the risk of obesity in them to five years grew to 1.79 times, and the seven years of 2.26 times, compared with those babies whose mothers were in the greener environment in the prenatal period. Seven-year period, whose parents lived in areas with the highest level of contamination, had an average of 1.08 kg of excess weight due to fat, not muscle or bone.
Check your observations scientists succeeded in mice, which had long held in an atmosphere polluted by PAHs. Over time, the animals began to gain weight, they have disturbed lipid metabolism, which also resulted in the deposition of excess fat.
Previously conducted study of the influence of high concentrations of PAHs in the air breathed by pregnant women, the level of intellectual development of children. It was noted that most of them are likely to be depressed, anxious and helpless, have problems with the endocrine system and are at greater risk of developing cancers.
Fortunately, New York has launched programs aimed at reducing the concentration of pollutants in urban air. The administration is trying to reduce the number of public transport, using environmentally unfriendly diesel fuel, etc. In turn, scientists have raised the problem will continue to search for new "ozhirogenov" to try to find ways to deal with them.