The research group of Koichiro Wasano, Director of the Hearing Impairment Laboratory of the National Hospital Organization Tokyo Medical Center, and Professor Iku Ogawa of Keio University School of Medicine has created the world's first hearing database containing gender-specific data for a wide range of age groups from teens to 10s. It was constructed.It is expected to be basic data for hearing utilization such as measures against dementia.
According to Keio University and others, the research group found that hearing was impaired due to the effects of ear diseases other than aging, based on about 2000 hearing tests conducted at the Tokyo Medical Center from 2020 to 7. Excluding 1 people, the loudest loudness that can be heard at the angular frequency is shown by age group and gender.
As a result, it was consistent with previous studies in Europe and the United States that males had faster hearing loss in high-pitched sounds than females, and that females had hearing loss in low-pitched sounds only in the elderly.
The awareness rate of deafness among the elderly was 10.6% in Europe and 11.3% in Japan, but the hearing aid wearing rate for people with deafness was only 41.6% in Japan, compared to 14.4% in Europe, showing a large difference.
In the hearing of young people, it was found that the hearing of high-pitched sounds gradually declined in the last 20 years.It is believed that the spread of portable music devices has led to continuous exposure to loud sounds, and it has become clear that hearing loss tends to become apparent at once from the 40s.
The research group thinks that it is necessary to create a mechanism to limit the output of portable music devices in order to prevent hearing loss.
Paper information:[The Lancet Regional Health – Western Pacific] Patterns of Hearing Changes in Women and Men from Denarians to Nonagenarians
