Exposure to traffic noises may up obesity risk, claims Study

Agencies
November 19, 2018

London, Nov 19: People who are exposed to road traffic noise for prolonged periods may be at increased risk of obesity, a study has found.

The study, published in the journal Environment International, was based on data from 3,796 adults.

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

"For example, we observed that a 10-decibel increase in mean noise level was associated with a 17 per cent increase in obesity," said Foraster.

Researchers 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.

The methodology and design of the study were chosen to allow the authors to look at the data from two different perspectives.

Cross-sectional analysis was used to study the participant population at a specific time point in the study and to examine more objective measures.

The longitudinal design, on the other hand, allowed the authors to evaluate how the risk of obesity evolved over the study period.

The associations with traffic-related noise pollution were consistent in both cases. Overweight was only associated with exposure to traffic-related noise in the cross-sectional analysis.

Researchers found no association between noise exposure and body mass index measured continuously throughout the longitudinal analysis.

"Our study contributes additional evidence to support the hypothesis that traffic-related noise affects obesity because the results we obtained in a different population were the same as those reported by the authors of earlier studies," said Foraster.

Sustained exposure to noise pollution is a widespread public health problem that is more serious than previously thought, researchers said.

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.

"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," said Foraster.

"Our findings suggest that reducing traffic-related noise could also be a way of combating the obesity epidemic," she said.

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News Network
March 11,2020

Mar 11: In a bid to keep its flock together, the crisis-hit Madhya Pradesh Congress has decided to shift its 92 MLAs either to Jaipur or some other place.

The move comes after 22 Congress MLAs loyal to former Union minister Jyotiraditya Scindia resigned on Tuesday, pushing the 15-month-old Kamal Nath government to the brink of collapse.

"We are going to take our 92 MLAs and those supporting our Madhya Pradesh government to a hotel," a senior Congress leader said on Wednesday.

The legislators would be taken either to Jaipur or some other Congress-ruled state like Chhattisgarh, a party source said.

Apart from its own MLAs, the Congress is also keeping a close watch on four Independents who are supporting the party-led state government.

On Tuesday, 22 Congress MLAs from Madhya Pradesh resigned soon after Scindia quit the party.

The development reduced the Congress government in the state to minority.

The state Congress unit is now making all efforts to save the Kamal Nath-led government.

The BJP on Tuesday night shifted its MLAs to Manesar at Gurugram in Haryana, sources in the saffron party said.

The Congress, whose tally before the rebellion was 114, has a wafer-thin majority in the Madhya Pradesh Assembly whose current effective strength is 228.

It also has the support of four Independents, two BSP legislators and one SP MLA, but some of them are now likely to switch sides to the BJP.

The BJP has 107 seats in the state Assembly.

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News Network
June 15,2020

New Delhi, Jun 15: A total of 1,15,519 samples of COVID-19 have been tested in the last 24 hours taking the total samples tested to 57,74,133 in the country, the Indian Council of Medical Research (ICMR) said.

"Total sample tested 57,74,133 and samples tested in the last 24 hours is 1,15,519," said ICMR.

With an increase of 11,502 cases in the past 24 hours, the COVID-19 count in India reached 3,32,424 on Monday, according to the Union Health and Family Welfare Ministry.

The COVID-19 count includes 1,53,106 active cases while 1,69,798 patients have been cured and discharged or migrated so far, and the toll due to COVID-19 has now reached 9,520.

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Agencies
February 6,2020

Washington D.C., Feb 6: An international team of astronomers has found an unusual monster galaxy that existed about 12 billion years ago when the universe was only 1.8 billion years old.

The team of astronomers was led by scientists at the University of California, Riverside.

Dubbed XMM-2599, the galaxy formed stars at a high rate and then died. Why it suddenly stopped forming stars is unclear.

"Even before the universe was 2 billion years old, XMM-2599 had already formed a mass of more than 300 billion suns, making it an ultra massive galaxy," said Benjamin Forrest, a postdoctoral researcher in the UC Riverside Department of Physics and Astronomy and the study's lead author.

"More remarkably, we show that XMM-2599 formed most of its stars in a huge frenzy when the universe was less than 1 billion years old and then became inactive by the time the universe was only 1.8 billion years old," Forrest added.

The team used spectroscopic observations from the W. M. Keck Observatory's powerful Multi-Object Spectrograph for Infrared Exploration or MOSFIRE, to make detailed measurements of XMM-2599 and precisely quantify its distance.

The study results appear in the Astrophysical Journal.

"In this epoch, very few galaxies have stopped forming stars, and none are as massive as XMM-2599," said Gillian Wilson, a professor of physics and astronomy at UCR in whose lab Forrest works.

"The mere existence of ultramassive galaxies like XMM-2599 proves quite a challenge to numerical models. Even though such massive galaxies are incredibly rare at this epoch, the models do predict them."

"The predicted galaxies, however, are expected to be actively forming stars. What makes XMM-2599 so interesting, unusual, and surprising is that it is no longer forming stars, perhaps because it stopped getting fuel or its black hole began to turn on. Our results call for changes in how models turn off star formation in early galaxies," the professor stated.

The research team found XMM-2599 formed more than 1,000 solar masses a year in stars at its peak of activity -- an extremely high rate of star formation. In contrast, the Milky Way forms about one new star a year.

"XMM-2599 may be a descendant of a population of highly star-forming dusty galaxies in the very early universe that new infrared telescopes have recently discovered," said Danilo Marchesini, an associate professor of astronomy at Tufts University and a co-author on the study.

"We have caught XMM-2599 in its inactive phase," Wilson said, who led the W. M. Keck Observatory data acquisition
Co-author Michael Cooper, a professor of astronomy at UC Irvine, said this outcome is a strong possibility.

"Perhaps during the following 11.7 billion years of cosmic history, XMM-2599 will become the central member of one of the brightest and most massive clusters of galaxies in the local universe," he said.

"Alternatively, it could continue to exist in isolation. Or we could have a scenario that lies between these two outcomes," he stated.

The study was supported by grants from the National Science Foundation and NASA.

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