Yes. Also, some strong theories relate the tinnitus to a deficiency in certain vitamins. I can't name them for you, don't have the articles in front of me, but I do suffer with sporadic tinnitus. I understand that some people's tinnitus is caused by permanent nerve damage, but that doesn't explain mine coming and going. There was a company in Fla that would run vitamin panels and other blood analysis on specimens you would submit without having doctor's orders. It was called Life Extension, located in Ft Lauderdale. They're still in business, I just haven't used them lately. I subscribed to their main publication a while back and it was quite interesting. Not a New Age type of thing, more of a natural living, vegan/vegetarian targeted group, but that wouldn't alter their testing results. I have no stake or relationship with this company.