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Air pollution impairs functioning of blood vessels in lungs

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POLLUTION

New Delhi, December 10: Air pollution is a major public health issue for People living in polluted urban areas, according to the report, it kills over 1.6 million people across India and China every year.

It damages the lungs and potentially leads to decompensate heart failure.
The Study says, Gaseous air pollutants such as Nitrogen Dioxide (NO2) and Ozone (O3) can raise the risk of cardiovascular disease and could weaken the function of blood vessels in the lungs and could raise the risk of cardiovascular disease.

Study says, Gaseous air pollutants such as Nitrogen Dioxide (NO2) and Ozone (O3) can raise the risk of cardiovascular disease and could weaken the function of blood vessels in the lungs and could raise the risk of cardiovascular disease.

“Air pollution is associated with increased pulmonary vascular tone which makes it more difficult for blood to flow to the lungs. Longer exposure to air pollution exposure seems necessary to impair right ventricular systolic function,” said lead author Jean-Francois Argacha a cardiologist at the University Hospital (UZ) in Brussels.

According to researchers, if air pollution causes narrowing of the blood vessels in the lungs — vasoconstriction — this combined with the systemic effects of air pollution, which consists of particulate matter of different sizes and gases such as nitrogen dioxide and ozone, could cause decompensate heart failure.

POLLUTION

The study showed a negative effect of particulate matter — PM10, PM2.5 and ozone on pulmonary circulation.

An increase in PM10 and PM2.5 over ten days were associated with worse right ventricle function.

Specifically, increases in these pollutants were associated with reduced pulmonary acceleration time and increased pulmonary acceleration slope.

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The negative impact of PM10 on pulmonary circulation was more pronounced in patients with obstructive sleep apnoea.

The study also tells that exposure to Diesel exhaust did not modify the Pulmonary circulation compared to ambient air when the volunteers were resting but did when Dobutamine was administered.

“This suggests that pollution is more harmful to the lung circulation during exercise,” Argacha said.

“Our main advice is to limit physical activities during heavy air pollution,” Argacha suggested in the study presented at an annual meeting EuroEcho-Imaging 2016 in Leipzig, Germany.

 

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Health

Radiation from smartphones may up miscarriage risk: Study

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Pregnant woman, smartphone

New York, Dec 14: Pregnant women’s exposure to non-ionising radiation from smartphones, Bluetooth devices and laptops may more than double the risk of miscarriage, a study has showed.

Non-ionising radiation — radiation that produces enough energy to move around atoms in a molecule, but not enough to remove electrons completely — from magnetic fields is produced when electric devices are in use and electricity is flowing.

It can be generated by a number of environmental sources, including electric appliances, power lines and transformers, wireless devices and wireless networks.

While the health hazards from ionising radiation are well-established and include radiation sickness, cancer and genetic damage, the evidence of health risks to humans from non-ionising radiation remains limited, said De-Kun Li, a reproductive and perinatal epidemiologist at the Kaiser Permanente — a US-based health care firm.

For the study, published in the journal Scientific Reports, the team asked for 913 pregnant women over age 18 to wear a small (a bit larger than a deck of cards) magnetic-field monitoring device for 24 hours.

After controlling for multiple other factors, women who were exposed to higher magnetic fields levels had 2.72 times the risk of miscarriage than those with lower magnetic fields exposure.

The increased risk of miscarriage associated with high magnetic fields was consistently observed regardless of the sources of high magnetic fields. The association was much stronger if magnetic fields was measured on a typical day of participants’ pregnancies.

The finding also demonstrated that accurate measurement of magnetic field exposure is vital for examining magnetic field health effects.

“This study provides evidence from a human population that magnetic field non-ionising radiation could have adverse biological impacts on human health,” Li noted.

“We hope that the finding from this study will stimulate much-needed additional studies into the potential environmental hazards to human health, including the health of pregnant women,” he said.

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Health

Use of Smartphone before sleep may make your kid obese: Study

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New York, Dec 10: Beware if your children have a habit of playing games on smartphones before sleeping, he or she may face an increased risk of becoming obese, warns a study.

It was discovered kids who used digital devices such as watching TV or playing games on smartphones before going to bed got an average of 30 minutes less sleep in comparison to those who did not.

This lack of proper sleep not only caused fatigue and attention problems in school, but also disrupted their eating habits. This leads to higher body mass indexes (BMI), news agency IANS reported.

“We saw technology before bed being associated with less sleep and higher BMIs,”stated Caitlyn Fuller, researcher at the Pennsylvania State University in the US.

“We also saw this technology use being associated with more fatigue in the morning, which circling back, is another risk factor for higher BMIs. So we’re seeing a loop pattern forming,” Fuller further asserted.

The study, published in the journal Global Pediatric Health, examined the sleep and technology habits of 234 children, between the age of eight to 17 years.

As per the suggestions from the American Academy of Pediatrics (AAP), parents should set some limitations regarding the use of technology, like requiring their kids to put away their devices during meal times and keeping phones out of bedrooms at night.

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Health

How jet lag could increase cancer risk

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London, Dec 10: Frequent travelling that causes jet lag could increase risk of cancer as it tends to disrupt our body clocks that are controlled by the same mechanism that causes tumors, reveals study.

The findings, reported in the Daily Mail, discovered that internal human body clocks have a major influence on cell multiplication and has the potential to prevent cancer.

“Our internal clock is in sync with external light and dark cues, and prompts people’s behaviour and activity levels,” lead author Angela Relogio from the Charite-Medical University in Berlin, was quoted as saying by Daily Mail.

“Based on our results, it seems to us that the clock is likely to act as a tumor suppressor,” Relogio added.

For the study, published in the journal PLOS Biology, researchers examined a protein known as RAS, which is inappropriately activated in around a quarter of cancerous cells, in mice.

This takes place via two proteins — INK4 and ARF — that are known to conquer cancer.

“One cannot stop wondering whether disrupted circadian timing should be included as a next potential hallmark of cancer,” Relogio asserted.

Changes in the biological clock have also been known to up the risk of heart related diseases and diabetes.

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