Thursday October 17, 2019

Quitting Smoking Reduces Risk of Bladder Cancer in Women: Study

Our study emphasizes the importance of primary prevention (by not beginning to smoke) and secondary prevention (through smoking cessation) in the prevention of bladder cancer among postmenopausal women

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Representational Image. Woman smoking. Image source: www.dailyjoint.com

Quitting smoking can reduce the risk of bladder cancer in older women, says a study, adding that the most significant reduction in risk occurred in the first 10 years after quitting.

The researchers used various statistical models to analyse the association between the years since quitting smoking and the risk of bladder cancer.

For the study, the researchers included data from 143,279 women, all of whom had supplied information on whether they had ever smoked cigarettes, how much they had smoked and whether they were current smokers.

The study found that 52.7 per cent of the women were categorised as “never smokers,” 40.2 per cent as former smokers, and 7.1 per cent as current smokers.

marijuana, cancer
Quitting smoking cuts bladder cancer risk in women. Pixabay

“Although bladder cancer is a fairly rare cancer type, representing an estimated 4.6 per cent of new cancer cases in 2019, it is the most common malignancy of the urinary system, with high recurrence rate and significant mortality,” said Yueyao Li, Ph.D candidate from the School of Public Health, Indiana University in Bloomington, US.

“Smoking is a well-established risk factor for bladder cancer, but findings on the relationship between duration of smoking cessation and the reduction in bladder cancer risk are inconsistent,” Li added.

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Published in the journal Cancer Prevention Research, the study found that the steepest reduction in risk occurred in the first 10 years after quitting smoking, with a 25 per cent drop. The risk continued to decrease after 10 years of quitting.

“Our study emphasizes the importance of primary prevention (by not beginning to smoke) and secondary prevention (through smoking cessation) in the prevention of bladder cancer among postmenopausal women,” said Li. (IANS)

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The First All-Women Spacewalk is Set to Take Place This Week: NASA

According to NASA, The Spacewalk will last approximately six and a half hours

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Spacewalk
The Spacewalk will last approximately six and a half hours, according to NASA. Pixabay

The first all-woman spacewalk is set to take place this week itself as NASA astronauts Christina Koch and Jessica Meir are scheduled to venture outside the International Space Station (ISS) on October 17 or October 18.

The spacewalk will last approximately six and a half hours, according to NASA.

“@Space_Station update: our first all-female spacewalk with @Astro_Christina and @Astro_Jessica will be Thursday or Friday to replace a faulty battery charge-discharge unit,” NASA Administrator Jim Bridenstine tweeted on Tuesday.

Station managers decided to postpone previously planned spacewalks that had been set to install new batteries this week and next in order to replace the faulty power unit, called a Battery Charge/Discharge Unit (BCDU).

The BCDU failed to activate following the October 11 installation of new lithium-ion batteries on the space station’s truss.

Spacewalk
The Spacewalk will last approximately six and a half hours, according to NASA. Pixabay

NASA said that the BCDU failure has not impacted station operations, safety of the crew, or the ongoing experiments aboard the orbiting laboratory, many in preparation for future human missions to the Moon and Mars.

However, the failed power unit does prevent a new lithium-ion battery installed earlier this month from providing additional station power.

An all-woman spacewalk, involving Koch and NASA astronaut Anne McClain, was originally scheduled for March.

But that spacewalk was scuttled because properly fitted spacesuits could not be readied in time for both astronauts, Space.com reported.

Spacewalk
An all-woman Spacewalk, involving Koch and NASA astronaut Anne McClain, was originally scheduled for March. Pixabay

So far, the 15 women who have conducted a spacewalk did so with a male companion. So when Koch and Meir venture out of the space station this week, they will make some long-overdue history.

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This will be Koch’s fourth spacewalk and Meir’s first. (IANS)