Turns out that age-related hearing loss may be a myth. What it is in reality is the effect of long-term abuse of the ears. Studies of people living in remote places such as the Amazon and Borneo found people in their 80's with no hearing loss at all.
Audiologists say that a great many teenagers today have the hearing acuity of a 50-year-old, and that when that generation does reach their 50's functional deafness will have become a worldwide epidemic. They blame both environmental noise and tinny earbuds for the recent rise in hearing impairment.
Here's another bit of depressing news: hearing loss among audio professionals is more rapid than in the general population. In a survey of audio engineers, they were on average 10 years ahead of the curve. And that doesn't even address hearing loss among stage musicians. There's a reason Pete Townshend writes books nowadays instead of making records.
I think I'll have a Milk of Magnesia cocktail now.