Presbycusis and Genetics
Raynor, et al (2009) reviewed presbycusis trends and related demographics to estimate the possible genetic contribution to presbycusis. Three thousand five hundred and ten (3,510) participants between the ages of 48 and 100 were evaluated. In agreement with previous research, the authors determined that the prevalence of presbycusis increases with age. Additionally, they noted that familial aggregation (increased occurrence of a sign/symptom/disorder within close relatives) is stronger in women than men.
The authors note that presbycusis is the third most prevalent chronic condition in older Americans, impacting approximately one-third of all people greater than 65 years of age. However, as presbycusis prevalence increases with age, it also impacts over half of all people greater than 75 years of age. Raynor, et al note that by 2050 more than 86 million people in the United States will be 65 years of age and older.
Presbycusis is the most common form of hearing impairment among people and is characterized by decreased hearing thresholds, decreased ability to understand speech-in-noise, slowed central processing times for acoustic information and decreased localization ability.
Presbycusis appears to be a multifactorial disorder involving genetic and environmental issues.
For More Information, References, and Recommendations
Raynor LA, Pankow JS, Miller MB, Huang GH, Dalton D, Klein R, Klein BEK, Cruickshanks KJ. (2009) Familial Aggregation of Age-Related Hearing Loss in an Epidemiological Study of Older Adults. American Journal of Audiology 18:114-118.