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<p>To evaluate the association between cumulative mobile phone exposure and extended high-frequency (EHF) hearing thresholds in young adults with clinically normal hearing using a quantitative cumulative exposure index. A cross-sectional study was conducted among 405 adults (mean age 27.4 ± 5.6 years; range 18–40 years) with normal conventional pure-tone thresholds (≤ 25 dB HL). Participants reported years of mobile-phone use and average daily talk time, from which a cumulative exposure index (CEI) was calculated. EHF audiometry was performed bilaterally at 10, 12.5, 14, 16, and 20&#xa0;kHz. Associations between exposure variables and EHF thresholds were evaluated using Spearman correlation and Kruskal–Wallis testing. Average bilateral thresholds (10–20&#xa0;kHz) were 16.88 ± 4.12 dB HL for 1–5 years of use, 19.75 ± 5.06 dB HL for 6–10 years, and 21.41 ± 4.40 dB HL for &gt; 10 years. EHF thresholds correlated significantly with years of usage (ρ = 0.313, <i>p</i> &lt; 0.001), daily talk time (ρ = 0.293, <i>p</i> &lt; 0.001), and cumulative exposure hours (ρ = 0.363, <i>p</i> &lt; 0.001). Mean EHF thresholds remained within clinically normal limits overall but frequency-specific mean thresholds were highest at 14 and 16&#xa0;kHz. Higher cumulative mobile-phone exposure was associated with subtle elevation of extended high-frequency hearing thresholds, particularly at 14–16&#xa0;kHz, despite normal conventional hearing. EHF audiometry may therefore provide a sensitive method for detecting early subclinical auditory variation in populations with high mobile-device use.</p>

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Association Between Cumulative Mobile-Phone Use and Extended High-Frequency Hearing Thresholds in Young Adults with Normal Hearing

  • 期刊论文

  • 发表日期：

    2026年4月18日

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  • Anil Kumar,
  • Manu Malhotra,
  • Madhu Priya,
  • Abhishek Bhardwaj,
  • Deepak Sangwan,
  • Subrata Nag,
  • Jyoti Choudhary,
  • Akanksha Gupta

摘要

To evaluate the association between cumulative mobile phone exposure and extended high-frequency (EHF) hearing thresholds in young adults with clinically normal hearing using a quantitative cumulative exposure index. A cross-sectional study was conducted among 405 adults (mean age 27.4 ± 5.6 years; range 18–40 years) with normal conventional pure-tone thresholds (≤ 25 dB HL). Participants reported years of mobile-phone use and average daily talk time, from which a cumulative exposure index (CEI) was calculated. EHF audiometry was performed bilaterally at 10, 12.5, 14, 16, and 20 kHz. Associations between exposure variables and EHF thresholds were evaluated using Spearman correlation and Kruskal–Wallis testing. Average bilateral thresholds (10–20 kHz) were 16.88 ± 4.12 dB HL for 1–5 years of use, 19.75 ± 5.06 dB HL for 6–10 years, and 21.41 ± 4.40 dB HL for > 10 years. EHF thresholds correlated significantly with years of usage (ρ = 0.313, p < 0.001), daily talk time (ρ = 0.293, p < 0.001), and cumulative exposure hours (ρ = 0.363, p < 0.001). Mean EHF thresholds remained within clinically normal limits overall but frequency-specific mean thresholds were highest at 14 and 16 kHz. Higher cumulative mobile-phone exposure was associated with subtle elevation of extended high-frequency hearing thresholds, particularly at 14–16 kHz, despite normal conventional hearing. EHF audiometry may therefore provide a sensitive method for detecting early subclinical auditory variation in populations with high mobile-device use.