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Inhaling heated tobacco vapor through e-cigarettes increases chances of asthma and chronic obstructive pulmonary disease (COPD). Pixabay

Inhaling heated tobacco vapor through e-cigarettes increases chances of asthma and chronic obstructive pulmonary disease (COPD), conditions long shown to be caused by smoking traditional, combustible cigarettes.

The research data, published in the American Journal of Preventive Medicine, also suggest chances of developing COPD may be around six times greater among people who vape as well as smoke tobacco regularly, compared with those who don’t use any tobacco products.

“Although e-cigarettes may turn out to be safer than traditional combustible cigarettes, our studies add to growing evidence that they carry health risks,” said researcher Michael Blaha from Johns Hopkins University in the US.

Cases of asthma and COPD are rising worldwide, according to the World Health Organisation (WHO), with most cases of COPD resulting from traditional cigarettes.

Cases of asthma and COPD are rising worldwide, according to the World Health Organisation (WHO). Pixabay

To shed light on the risk, the researchers used national survey data gathered by the Behavioural Risk Factor Surveillance System in 2016-17.

In the analysis, published in BMC Pulmonary Medicine, the investigators analysed data from 402,822 people who identified themselves as never smokers — those who smoked less than 100 combustible cigarettes in their lifetimes.

Of these, 3,103 reported using e-cigarettes or vaping, and 34,074 people reported having asthma. Almost 11 per cent of e-cigarette users reported asthma compared with eight per cent of those who had never used e-cigarettes.

The people who reported to be e-cigarette users were 39 per cent more likely to self-report asthma compared with those who said they never used e-cigarettes.

Those who said they used e-cigarettes some days were 31 per cent more likely, and daily users 73 per cent more likely to report asthma, compared with non-e-cigarette users.

For the study published in the American Journal of Preventive Medicine, the researchers analysed the same data from all the questioned participants.

Of the 700,000 plus participants, 61 per cent reported being never smokers, nine per cent current smokers, 30 per cent former smokers, more than three per cent e-cigarette users and two per cent used both e-cigarette and traditional cigarettes.

Of the e-cigarette users, about 11 per cent said they had chronic bronchitis, emphysema or COPD, compared with 5.6 per cent who said they never used e-cigarettes.

Also Read- Know About the Adverse Health Effects of E-Cigarettes

Among never smokers, e-cigarette users were 75 per cent more likely to report COPD, compared with those who had never used them.

For both studies, the researchers cautioned that they weren’t designed to show that vaping directly causes lung disease, but only whether doing so was associated with an increased likelihood of having disease. (IANS)


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Indian wrestler Ravi Kumar (57kg) and Deepak Punia (86kg) enjoyed fruitful outings at the Tokyo Olympic Games as they secured semifinal berths in their respective weight categories at the Makuhari Messe on Wednesday.

On the opening day of the wrestling competition, Ravi Kumar defeated Bulgaria's Georgi Vangelov 14-4 on technical superiority to reach the last-four in the men's 57kg category, while compatriot Deepak Punia overcame China's Zushen Lin 6-3 on points to advance to the semifinals.

Ravi Kumar will take on Nurislam Sanayev of Kazakhstan in the last-four, while Punia will be up against David Morris Taylor of the USA.

Earlier, Ravi Kumar had won his opening-round bout by technical superiority against Colombia's Oscar Tigreros to secure a quarterfinal spot. Competing in the Round-of-16 bout against the Colombian wrestler, the 23-year-old Ravi Kumar, who is making his Olympic debut, showed no nerves as he dominated the bout to win by technical superiority (13-2).

Ravi Kumar landed attack after attack and went 13-2 up, winning the bout by technical superiority with minutes to spare. In wrestling, building up a 10-point lead over the opponent results in a victory by technical superiority.

India's 86kg freestyle wrestler Deepak Punia showed no signs of the niggle that had forced him to pull out of the Poland Open Ranking Series in Warsaw in June, as he defeated Nigeria's Ekerekeme Agiomor on technical superiority to secure a quarterfinal berth.

He got his Olympic campaign to a fine start as he was in control from the start of the bout and hardly ever allowed his Nigerian opponent any room to maneuver his moves, finally winning with a 12-1 on technical superiority.

Punia, who had also suffered an elbow injury just before the Games, was slow at the start but came into his own as the bout progressed, inflicting takedowns at regular intervals to earn points.

The Indian wrestler eased into a 4-1 lead at the break and extended his lead comfortably in the second period.

Punia, the silver medallist from the 2019 world wrestling championships, then set up a clash with China's Lin Zushen in the quarterfinals and defeated him 6-3.