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Relationship between urinary iodine concentration and hearing capacity in children
P Valeix1, P Preziosi, C Rossignol
1Institut Scientifique et Technique de la Nutrition et de l'Alimentation, CNAM, France.
European Journal of Clinical Nutrition
|January 1, 1994
Summary
Children with mild to moderate iodine deficiency showed more severe hearing loss. This highlights the importance of adequate iodine intake for children
Area of Science:
- Pediatric Nutrition
- Auditory Health
- Public Health
Background:
- Iodine is essential for thyroid hormone production, crucial for neurodevelopment.
- Iodine deficiency disorders (IDDs) remain a public health concern globally.
- Urinary iodine concentration (UIC) is a key indicator of iodine status.
Purpose of the Study:
- To assess iodine status in healthy children in the Paris area.
- To investigate the relationship between iodine status and hearing acuity.
- To identify risk factors for iodine deficiency in diverse pediatric populations.
Main Methods:
- Cross-sectional study of 1222 children aged 10 months to 4 years.
- Measurement of urinary iodine excretion (UIE) via spot urine samples.
- Assessment of hearing acuity using pure-tone audiometry and free-field testing.
Main Results:
- Median UIE decreased with age, with higher prevalence of iodine deficiency in older children.
- Significant ethnic variations in UIE were observed, with lowest levels in West African children.
- Children at risk of iodine deficiency (<10 µg/100 ml) exhibited more severe hearing loss at high and speech frequencies.
Conclusions:
- A concerning prevalence of mild to moderate iodine deficiency exists in children in the Paris area.
- Iodine deficiency is associated with impaired hearing acuity in young children.
- Monitoring iodine status and addressing deficiencies are critical for optimal child development and auditory health.