Sources:
1. Hear Canada. Is it getting harder to hear? https://www.hearcanada.com/blog/2025-05-is-it-getting-harder-to-hear/
2. Bloom Hearing. Hearing Loss Symptoms. https://www.bloomhearing.com.au/hearing-loss/symptoms/
3. Hearing Review. Kochkin, S. and Rogin, C.M., 2000. Quantifying the obvious: The impact of hearing instruments on quality of life. Hearing Review https://hearingreview.com/wp-content/uploads/2019/01/KochkinRogin_QuantifyingObvious_0100HR.pdf
American Academy of Audiology. A Systematic Review of Health-Related Quality of Life and Hearing Aids: Final Report of the American Academy of Audiology Task Force on the Health-Related Quality of Life Benefits of Amplification in Adults
https://www.audiology.org/practice-guideline/a-systematic-review-of-health-related-quality-of-life-and-hearing-aids-final-report-of-the-american-academy-of-audiology-task-force-on-the-health-related-quality-of-life-benefits-of-amplification-in/
American Academy of Audiology. Untreated Hearing Loss Linked to Depression, Social Isolation in Seniors
https://www.audiology.org/practice-guideline/untreated-hearing-loss-linked-to-depression-social-isolation-in-seniors/
4. HearUSA: Be on the lookout: Signs of hearing loss: https://www.hearusa.com/hearing-loss/signs/
5. National Institute on Aging: Hearing Loss: A Common Problem for Older Adults: https://www.nia.nih.gov/health/hearing-and-hearing-loss/hearing-loss-common-problem-older-adults