Some of hearing loss is hereditary. But most is from non use of hearing protection equipment over time.
I wonder how today's kids with their Ipad or Iphone plugged into their head jamming the loud music so bad the walk in front of trains will fare?
I do think those young'uns that do will be doing without hearing long before I or most of us lost it!
But then again - I made use of my loss - turn the good ear to the pillow and all is well or just sit quietly with no emotion as the wife hollers at you! Hey Try it! I have gotten rather good at it!
Sorry dear you where saying?
JW