Saturday May 25, 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)

Next Story

UK Study: E-Cigarettes help Smokers Quit as Much as Stop-Smoking Aids

This study involved almost 19,000 people in England who had tried to quit smoking in the preceding 12 months, collected over a 12-year period from 2006 to 2018

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FILE - A sales associate demonstrates the use of an electronic cigarette and the smoke-like vapor that comes from it, in Aurora, Colorado, March 2, 2011. VOA

People using e-cigarettes to quit smoking are about 95% more likely to report success than those trying to quit without help from any stop-smoking aids according to the results of a large study in England.

The research, funded by the charity Cancer Research UK and published in the journal Addiction on Thursday, analyzed success rates of several common stop-smoking methods – including e-cigarettes, nicotine replacement therapy (NRT) patches and gum, and Pfizer’s varenicline, sold as Champix in the UK.

It also adjusted for a wide range of factors that might influence success rates for quitting – such as age, social level, degree of cigarette addiction, previous attempts to quit, and whether quitting was gradual or abrupt.

Latest World Health Organization data show that smoking and other tobacco use kills more than 7 million people a year globally. Of the 1.1 billion people worldwide who smoke, around 80 percent live in poor or middle-income countries.

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A woman smokes an electronic cigarette in London, Aug. 19, 2015. VOA

E-cigarettes have no tobacco, but contain nicotine-laced liquids that the user inhales in a vapor. Many big tobacco companies, including British American Tobacco, Imperial Brands and Japan Tobacco, sell e-cigarettes.

This study involved almost 19,000 people in England who had tried to quit smoking in the preceding 12 months, collected over a 12-year period from 2006 to 2018. Successful quitters were defined as those who said they were still not smoking.

As well as the 95% increased success rate for e-cigarettes, the study found that people prescribed Champix were around 82% more likely to have succeeded in stopping smoking than those who tried to quit without any aids.

“Our study adds to growing evidence that use of e-cigarettes can help smokers to quit,” said Sarah Jackson, a professor at University College London who co-led the study.

Using e-cigarettes, or ‘vaping,’ is considered by many experts to be an effective way for smokers to give up tobacco, but some in the scientific community are skeptical of their public health benefits, fearing they might normalize the idea of smoking and lead young people into the habit.

e-cigarettes
E-cigarettes have no tobacco, but contain nicotine-laced liquids that the user inhales in a vapor. Pixabay

Smokers who were prescribed NRT by a medical professional were 34% more likely to quit successfully, the study found. But those buying NRT from shops were no more likely to succeed that those trying to quit without any help at all.

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Experts said the results were robust and important. Peter Hajek, director of the tobacco dependence research unit at Britain’s Queen Mary University of London, said the study yielded two key findings about e-cigarettes:

“They help smokers quit at least as much as stop-smoking medications, and they are used by many more smokers. This means they generate many more quitters and do this at no cost to the NHS (National Health Service),” he said in an emailed comment. (VOA)