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Updated: Sep 16, 2025
05:10
Multidisciplinary Approach to Obesity Management: A Case Report
Published on: May 30, 2025
358
Does Weight Loss Impact Voice Quality in Obese Individuals?
Erdi Özdemir1, Ahmet Arslanoğlu1, Kayra Göktaş2
1Private Practice.
The Journal of Craniofacial Surgery
|July 7, 2025
Summary
Obesity impacts vocal tract function, affecting voice parameters like maximum phonation time and voice quality. Weight loss through diet significantly improves these voice measures, enhancing vocal function.
Area of Science:
- Physiology
- Otorhinolaryngology
- Speech and Hearing Science
Background:
- Obesity is known to induce anatomical and physiological changes within the vocal tract.
- These alterations can potentially influence voice production and quality.
Purpose of the Study:
- To examine the effects of obesity on various voice parameters.
- To investigate the impact of dietary-induced weight loss on these voice parameters.
Main Methods:
- A comparative study involving obese and nonobese participants.
- Assessment of anthropometric data (weight, BMI, body fat percentage).
- Measurement of voice parameters including maximum phonation time, fundamental frequency (F0), jitter, shimmer, noise-to-harmonics ratio, and Voice Handicap Index-10.
Main Results:
- Obese participants experienced significant weight loss and reduced body fat.
- Maximum phonation time increased, and fundamental frequency (F0) also rose in the obese group post-weight loss.
- Voice quality measures (jitter, shimmer) improved, and self-perceived voice handicap (VHI-10) significantly decreased after weight loss.
Conclusions:
- Obesity is associated with measurable changes in voice production, including reduced maximum phonation time and increased voice disturbance.
- Dietary intervention and subsequent weight loss lead to significant improvements in voice parameters and perceived voice handicap.
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