الفهرس 
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Abstract
Obesity is defined as having a body mass index (BMI) of more than 25 it is a significant health problem associated with many diseases in children and adults. It was also found to be a risk factor for hearing loss.
This study aimed to determine the effect of adulthood obesity on increasing the risk of hearing function impairment.
This study was done in the Audio-vestibular Unit, ENT department of Assiut university hospital.
The design of the present study included a study group and a control group. The study group consisted of 50 subjects, divided into two subgroups:
The first (overweight group): is composed of 14 adult subjects with BMI from 25 to 30.
The second (obese group): is composed of 36 adult subjects with a BMI of more than 30.
The control group consisted of 20 adult subjects whose ages ranged from (10-40) years, with normal BMI.
The selected subjects were in good general health.
Exclusion Criteria:
1- Evidence of systemic illness.
2- Evidence of neurological or psychiatric illness. 3- Evidence of middle or inner ear disease .
4- Evidence of exposure to risky noise. 5- Evidence of smoking.
6- No family history of obesity.
7- No history of drug intake.
Equipment:
1- Immitancemeter (impedance audiometer AZ 26).
2- Sound treated booth (industrial acoustic company IAC model 1602- A-t).
3- Dual Channel clinical audiometer (Madsen orbiter 922).
4- Intelligent Hearing system (otoacoustic emissions (OAEs). and ABR
Methodology:
Each subject was submitted to:
1- Careful history taking. 2- Otological examination.
3- Neurological examination.
4- Basic audiological evaluation.
• Immitancemetry.
• Pure tone audiometry (air and bone conduction).
• Speech audiometry includes:
- Speech reception threshold test (SRT).
- Word discrimination score (WDS).
5- Otoacoustic emission (TOAE).
6- Auditory brainstem response (ABR).
Results:
Obesity can cause hearing loss as in overweight about 42 % of the subjects had sensorineural hearing loss. And in obese about 58% of subjects had sensorineural hearing loss.
Conclusion:
The results of this study conclude that increase in BMI in adults was associated with hearing function impairment and significantly elevated hearing threshold in pure tone audiometry, diminished otoacoustic emission, and abnormal auditory brainstem response.
Recommendations:
We should encourage a healthy life for children and prevent obesity and should do hearing screening for obese children to achieve an early diagnosis of hearing loss.