I believe this to be a true fact also..I have noticed in my years of taking pain meds my hearing is going bad or maybe it is just age...LOL..but really I do notice a significate hearing inpairment and ringing and sensitivity to loud or even no so loud noises and then not be able to hear during riding lessons at all..yikes..I have got my self down to very little pain meds..I'm not sleeping well and my pain is not to good either, but I thought i was a good Idea to cut them back so they help relieve the pain bette when I do take them..I believe in the heating problems...sorry to say..