Thursday November 15, 2018

Levels of Air Pollution Directly Linked to Oral Cancer: Study

A significant association was also observed for ozone levels below 28.69-30.97 parts per billion

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Air Pollution
Air pollution linked to high risk of oral cancer: Study. Pixabay
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Higher levels of air pollution may be linked to a heightened risk of developing oral cancer, which includes cancers of the lips, tongue, cheeks, floor of the mouth, hard and soft palate, a study has found.

While mouth cancers have been associated with smoking, drinking, human papilloma virus, and the chewing of betel quid (“paan”), the study added to this list increased levels of fine particulate matter (PM2.5) and to lesser extent, ozone.

“This study, with a large sample size, is the first to associate oral cancer with PM2.5… These findings add to the growing evidence on the adverse effects of PM2.5 on human health,” said researchers including Shou-Jen Lan, Professor at the Asia University, in Taiwan.

Exposure to heavy metals and emissions from petrochemical plants are also thought to be implicated in the development of the disease while PM2.5 is known to be harmful to respiratory and cardiovascular health.

Previously, high air pollution has been linked to a host of health problems, from an increased risk of dementia to asthma and even changes in the structure of the heart, with recent research suggesting there is no “safe level” of air pollution.

Air Pollution
Air Pollution. pixabay

For the new study, published in the Journal of Investigative Medicine, the team discovered the association by looking at air pollution data from 66 air quality monitoring stations in Taiwan, collected in 2009.

They combined this with data from the health records of more than 4,80,000 men aged 40 and over from 2012-13. In total, there were 11,617 cases of mouth cancer among the participants.

They found that men exposed to the highest levels of PM2.5s had an increased risk of mouth cancer.

Compared with men exposed to average annual PM2.5 levels of 26.74 micrograms (µg) per cubic metre (m3) of air, those exposed to concentrations of 40.37 µg/m3 or higher had 43 per cent greater odds of developing the disease.

Air Pollution.
Air pollution may also lead to changes in heart structure. Pixabay

A significant association was also observed for ozone levels below 28.69-30.97 parts per billion.

According to the World Health Organization (WHO), air pollution is responsible for an estimated 4.2 million premature deaths worldwide per year.

Also Read- Google Pixel Cameras Coming With External Microphones Support

Around 6,57,000 cases of oral cancer are diagnosed annually across the globe, with 3,30,000 of those patients dying, it said. (IANS)

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Air Pollutants Can Be Stopped If They Are Frozen : Scientists

The air-quality across the NCR was very poor

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Pollution, pollutants, India, air pollution, WHO, diwali
India's Rashtrapati Bhawan, or the Presidential Palace is partly visible due to smog as traffic plies on Rajapth, the ceremonial boulevard in New Delhi. VOA

Freezing pollutants can prevent deadly outdoor air pollution — thought to cause more than three million premature deaths worldwide every year — from seeping indoors by 99 per cent, scientists have discovered.

The research, by a team of scientists from the Nottingham Trent University in the UK and the Chinese Academy of Sciences, involved studying the effectiveness of cryogenics for indoor air purification, by removing the gaseous pollutants and tiny particulates caused by haze.

The team found that as they circulated haze-polluted air through a cryogenic condenser, the finer particles stuck together in the condenser tube before dropping out by gravity, and emerging as clean air.

Air Pollution, China, WHO,Pollution, pollutants
A man wearing a respiratory protection mask walks toward an office building during the smog after a red alert was issued for heavy air pollution in Beijing’s central business district, China. VOA

Their method was able to remove 99 per cent of particulates and 98 per cent of nitrogen oxide pollutants.

“Hazardous outdoor air pollution has severely affected indoor air quality, threatening the health of billions of people,” said Professor Robert Mortimer, Dean of the School of Animal, Rural and Environmental Sciences at Nottingham.

“Outdoor air pollution in cities is a global problem. While there are some existing technologies to purify indoor air, they can be inefficient, expensive or produce harmful by-products.

“When outdoor air quality is poor, people tend to spend even more time indoors – but outdoor pollution also leads to indoor pollution and people are still impacted.”

air pollution, Pollution, pollutants
In this Sept. 19, 2018 photo steam and cooling towers of a lignite power plant are reflected in a pond in Peitz, eastern Germany. VOA

The experiments, reported in the journal Science of the Total Environment, showed that by simply circulating polluted air through a small freezing chamber we can remove most of the fine particles and gas pollutants.

“Our study makes it possible to add an ‘air cleaner’ option to household appliances in areas which might experience extremely poor air conditions. By controlling indoor air pollution and improving air quality in this way, this work could be greatly beneficial for public health,” added Gang Pan, Professor at the varsity.

It is hoped that the work could pave the way for simple modification of air conditioning and humidifier units so that they can also clean polluted indoor air, the team said.

Air Quality, WHO, Pollution, pollutants
Air pollution can also damage your kidneys. wikimedia commons

Delhi and the National Capital Region (NCR) on Sunday witnessed “very poor” air quality with the minimum temperature recorded at 12.4 degrees Celsius, two notches below the season’s average.

Also Read: Delhi’s Air Quality Leads to Ban On Truck And Construction

The air-quality across the NCR was very poor, according to System of Air Quality and Weather Forecasting And Research.

The humidity at 8.30 a.m. was 87 per cent. The maximum temperature was likely to hover around 28 degrees Celsius. (IANS)