What are the reason behind why hearing disorder occur? Is it relevant to hormonal defficiency, to our genes of it happens because of some unavoidable accidents?

    

Hearing disorders can be a cause of various things like accident, and negligence.
For example, if you like listening to your MP3 player everytime and the volume is always high, you will have high chances on getting a hearing disorder.

A lot of hearing disorders are due to age also. As our body gets older, our hearing capacity also decreases, like our eyesight. There is little that can be done to prevent this.

Prolong exposure to high decibel sound, age, injuries can amount to hearing disorders.
Accidents are bound to happen.We can just be careful.
Whenever we have problem with our ear we should visit are doctor. rather than self-treatment.
Ears are one of the most neglected part of our body.We take it for granted but it is too precious.

Hearing disorder may happen to you due to various reasons.If you have suffered a minor injury then also it may result in your deafness.Listening to music in high volumes or headphones for hours can cause great damage to your ears.I would also suggest you to visit the ear specialist and clean your eyes from the harmful dusts that can cause damage to the ear membrane and cause hearing disorder.

I was going to add my own little bit, but after reading through all the previous posts, it appears that they've covered pretty much everything.
Are you satisfied with your answer(s)?