Five months ago I lost partial hearing in one ear and have been to an ENT doctor several times; even having an MRI to see what the problem really is. I started on the Advanced Hearing Formula about three weeks ago, and this morning when I woke up, I could hear! Sounds that were gone (in the high pitch range) have come back. I don't even know yet what the MRI will reveal, but my suspicion is that everything will be back to normal! I don't know the cause of the problem, but now I am fine. Grateful! Happy! Thank you!