Causes for changes in hearing include noise exposure, certain medications, chronic health conditions and genetics. You should stay as healthy as you can to try to slow down the progression of hearing loss.
Yes, hearing aid purchases are eligible expenses under FSAs and HSAs. Keep in mind that the process for a hearing aid fitting can take several weeks, since you will need a current hearing evaluation prior to receiving the hearing aids.
It is generally recommended that adults aged 50 or older have a baseline hearing evaluation. Regardless of your age, though, you should have a diagnostic hearing test if you are experiencing problems hearing and understanding speech.