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In this milestone episode of APS Radio, host Jim Burneka welcomes guest Dr. Hillary Snapp, chief of audiology at the University of Miami’s Miller School of Medicine. Together, they cover the critical issue of noise-induced hearing loss (NIHL) specifically affecting firefighters—a profession already burdened by numerous health risks. Dr. Snapp highlights the contributing factors, including toxic chemical exposures and the cumulative effects of high noise levels during firefighting activities. Through innovative research, including a groundbreaking study on the therapeutic potential of mild therapeutic hypothermia, Dr. Snapp aims to address the dual challenges of NIHL and tinnitus within this occupational group. This episode underscores the urgent need for awareness, early detection, and effective therapeutic strategies to protect firefighters and promote their long-term auditory health. More information about Dr. Snapp and the research she’s working on can be found at: umiamihealthresearch.org and restorear.com.
1. THE INCREASING AWARENESS OF NOISE-INDUCED HEARING LOSS
Dr. Snapp emphasized that noise-induced hearing loss is a well-documented issue, particularly in high-risk occupations like firefighting. Awareness of the inherent risks associated with firefighting, such as exposure to loud sirens, air horns, and the intense sensory environment of fire scenes, are often compounded by other toxic exposures within the firefighting profession. These risks are crucial to understand and discuss.
Historically, awareness around NIHL has lagged behind issues like cancer and chemical exposures, yet the two are interlinked. The conversations initiated by organizations like the Firefighter Cancer Initiative are opening pathways for researchers to address hearing loss as a significant health concern. Dr. Snapp noted the importance of addressing this ongoing challenge, stressing the significance of expanding community dialogues around hearing health.
2. THE CUMULATIVE EFFECTS OF NOISE AND CHEMICAL EXPOSURE
This episode centered around the effects of noise and toxic substances, and how these factors contribute to a higher risk of hearing loss among firefighters. Dr. Snapp explained that both chemical exposures and noise exposures increase oxidative stress, which may lead not only to hearing loss, but also to difficulty with communication as firefighters age. The complex challenge firefighters face is that their auditory system experiences stressors of both noise intensity levels and chemical exposures associated with firefighting efforts.