I have hearing loss in my left ear. For three years, since it started, I have explored the issue comprehensively, and have narrowed it down to three causes.
1) artificial flavorings, pesticides, chemical additives in food. They're everywhere.
2) chemicals and metals in things like shrimp, crab, etc.
3) fear in certain situations, causing clenching in the kidneys. The kidneys are directly related to the ears.
4) stones in the liver (cause of ringing).
The answer: cleanse, flush, cut out chemicals, and deal with fears.