Washington (PTI): Over one billion teenagers and young people are potentially at risk of hearing loss due to their use of headphones and earbuds, and attendance at loud music venues, according to a study published in the journal BMJ Global Health.

The international team, including researchers from Medical University of South Carolina, US, noted that the governments around the world need to urgently prioritise "safe listening" policies to safeguard aural health.

"There is an urgent need for governments, industry, and civil society to prioritise global hearing loss prevention by promoting safe listening practices," the authors of the study said.

The World Health Organization (WHO) estimates that over 430 million people worldwide currently have disabling hearing loss, the researchers said.

Young people are particularly vulnerable because of their use of personal listening devices (PLDs), such as smartphones, headphones and earbuds, and attendance at loud music venues, amid poor regulatory enforcement, they said.

Previously published research suggests that PLD users often choose volumes as high as 105 decibel (dB) while average sound levels at entertainment venues range from 104 to 112 dB.

This far exceeds the permissible sound levels of 80 dB for adults and 75 dB for children even if for very short periods of time.

The researchers gauged the prevalence of unsafe listening practices among teens and young adults to create a global estimate of the numbers who could therefore be at risk of hearing loss.

They trawled research databases for relevant studies published in English, French, Spanish and Russian, involving 12-34 year-olds, and reporting on objectively measured device output levels and length of exposure.

The research included 33 studies, corresponding to data from 35 records and 19,046 participants. 17 records focused on PLD use and 18 focused on loud entertainment venues.

The researchers also estimated the number of people who could be at risk of hearing loss by considering the estimated global population of 12-34 year-olds in 2022 (2.8 billion) and the best estimates of exposure to unsafe listening practices from PLDs or loud entertainment venues.

The research indicates that the prevalence of unsafe listening practices from PLD use and attendance at loud entertainment venues is common worldwide -- 24 per cent and 48 per cent, respectively, among teens and young people.

The researchers estimate that the global number of teens and young adults who could potentially be at risk of hearing loss as a result ranges from 0.67 to 1.35 billion.

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Kanpur (UP), Dec 3: A 17-year-old vegetable vendor lost his leg after being run over by a train while he was collecting his belongings allegedly thrown on a track by police personnel during an anti-encroachment drive here.

Deputy Commissioner of Police (West) Vijay Dhull told PTI that Head Constable Rakesh Kumar has been placed under suspension.

Police initiated an inquiry after several purported videos surfaced online showing the boy lying on the tracks asking for help as policemen and people try to rescue him, a senior official said.

"Prima facie, it appears Kumar showed negligent behaviour," Dhull said, adding that Assistant Commissioner of Police (Kalyanpur) Vikas Pandey has been asked to conduct the inquiry and submit a report at the earliest.

Police personnel had thrown a container of the victim, identified as Arsalan alias Irfan of Rawatpur area, and when he had gone on the railway track to pick it up, he was run over by a train on Friday, Dhull said.

Arsalan lost his right leg and suffered serious injuries to his left leg. He was taken to the Lala Lajpat Rai Hospital from where he was shifted to the SGPGIMS where a surgery was performed on Saturday, he said.

Dhull confirmed that several purported videos of the incident have gone viral and police are trying to obtain the mobile clips and pictures. These will help police to establish the sequence of events, he said.

Interacting with reporters, a local, who identified himself as Mohammad Shanu, claimed that the victim lost his leg after being hit by a train when he was collecting his weighing scale thrown on the tracks by police during an anti-encroachment drive.

The victim's father Saleem, an auto-rickshaw driver, told media persons that his son's leg were severed on the spot.