Thursday October 24, 2019

Longer Exposure to Honking Traffic Makes You Obese

For the study, the researchers involved 3,796 adults and examined body mass index (BMI), waist circumference, body fat, central obesity and overweight

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Traffic Kolkata, Wikimedia

Are you obese or overweight? Blame long term exposure to blaring horns and other noise from road traffic, said researchers.

The study showed that a 10 decibel (dB) increase in mean noise level was associated with a 17 per cent increase in obesity.

“Our analysis shows that people exposed to the highest levels of traffic noise are at greater risk of being obese” said Maria Foraster, lead researcher from the Barcelona Institute for Global Health in Spain.

It could be because noise generates stress and affects our sleep. It alters hormone levels and increases blood pressure.

Moreover, among other effects, sleep disturbance deregulates glucose metabolism and alters the appetite, the researchers explained in the paper published in the journal Environment International.

Long term exposure to honking traffic can make you obese. Flickr

“In the long term, these effects could give rise to chronic physiological alterations, which would explain the proven association between persistent exposure to traffic-related noise and cardiovascular disease or the more recently discovered associations with diabetes and obesity,” Foraster said.

“Our findings suggest that reducing traffic-related noise could also be a way of combating the obesity epidemic,” he noted.

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For the study, the researchers involved 3,796 adults and examined body mass index (BMI), waist circumference, body fat, central obesity and overweight.

They also analysed exposure to noise generated by aircraft and railway traffic and found no significant associations except in the case of long-term exposure to railway noise, which was associated with a higher risk of overweight but not of obesity. (IANS)

Next Story

Fatty Tissues Accumulate Inside Lungs of Obese People: Study

The researchers examined post-mortem samples of the lungs that had been donated for the research and stored in the Airway Tissue Biobank

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Excess fat accumulates in the airway walls of Obese people where it takes up space and seems to increase inflammation within the lungs. Pixabay

Researchers have found that fatty tissues accumulate in the airway walls, particularly in people who are overweight or obese.

The study, published in the European Respiratory Journal, suggested that the fatty tissue alters the structure of people’s airways and this could be one reason behind the increased risk of asthma.

“Our research team studies the structure of the airways within our lungs and how these are altered in people with respiratory disease,” said the study’s author John Elliot from Sir Charles Gairdner Hospital in Australia.

“Looking at the samples of lungs, we spotted fatty tissue that had built up in the airway walls. We wanted to see if this accumulation was correlated with body weight,” Elliot said.

The researchers examined post-mortem samples of the lungs that had been donated for the research and stored in the Airway Tissue Biobank.

They studied samples from 52 people, including 15 who had no asthma, 21 who had the disease but died of other causes and 16 who died of asthma.

Using dyes to help visualise the structures of 1373 airways under a microscope, they identified and quantified any fatty tissue present.

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Fatty tissue alters the structure of Obese people’s airways and this could be one reason behind the increased risk of asthma. Pixabay

They compared this data with each person’s body mass index (BMI).

The study showed that fatty tissue accumulates in the walls of the airways. The analysis revealed that the amount of fat present increases in line with increasing BMI.

“We’ve found that excess fat accumulates in the airway walls where it takes up space and seems to increase inflammation within the lungs,” said the study’s co-author Peter Noble.

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“We think this is causing a thickening of the airways that limits the flow of air in and out of the lungs, and that could at least partly explain an increase in asthma symptoms,” Noble said. (IANS)