From URL: http://www.hear-it.org/page.dsp?page=3277
November 4, 2004, Turkey:
O blood type associated with increased risk of hearing loss
Everybody risks hearing loss when exposed to high noise levels, but one group is more at risk. People with O blood type are 35 percent more likely than others to suffer from noise induced hearing loss from noise exposure, according to a Turkish study involving 176 employees at a factory in Isparta.
There are four blood types and the type that flows through the veins affects the risk of hearing loss. Among the workers with type O blood, more than 58 percent suffered from hearing loss after 10 years of working in daily noise levels of 85-90 dB. In comparison, between 32 and 39 percent of people with blood type A, B or AB suffered from hearing loss. Hearing loss was found to be almost twice as prevalent among type O blood employees as among those with type A blood.
Type O is the second most common blood, surpassed only by type A. Nearly one third of the workers in the survey, as well as in the general population of Turkey, are type O. There is no obvious explanation of the connection between blood type and hearing loss, but researchers point to variations in the blood types' effect on hair cell development as one possibility.
Source: Correlation Between Blood Group and Noise-induced Hearing Loss, Acta otolaryngologica, 2003, no. 123.
November 4, 2004, Turkey:
O blood type associated with increased risk of hearing loss
Everybody risks hearing loss when exposed to high noise levels, but one group is more at risk. People with O blood type are 35 percent more likely than others to suffer from noise induced hearing loss from noise exposure, according to a Turkish study involving 176 employees at a factory in Isparta.
There are four blood types and the type that flows through the veins affects the risk of hearing loss. Among the workers with type O blood, more than 58 percent suffered from hearing loss after 10 years of working in daily noise levels of 85-90 dB. In comparison, between 32 and 39 percent of people with blood type A, B or AB suffered from hearing loss. Hearing loss was found to be almost twice as prevalent among type O blood employees as among those with type A blood.
Type O is the second most common blood, surpassed only by type A. Nearly one third of the workers in the survey, as well as in the general population of Turkey, are type O. There is no obvious explanation of the connection between blood type and hearing loss, but researchers point to variations in the blood types' effect on hair cell development as one possibility.
Source: Correlation Between Blood Group and Noise-induced Hearing Loss, Acta otolaryngologica, 2003, no. 123.