So, I have no measurable hearing loss in right ear. In left ear I have 20db or greater until 4khz. At 4khz, I hear at 30db, 6khz I hear at 30db, and 8khz I hear at 40-45db. I hate that I have this uneven hearing, but hope there will be a cure in future. However, I'm super concerned about this effecting my ability to think and concentrate. I hear that hearing loss can effect this and memory. Does my level of hearing loss effect this? Or is that at the greater levels? I honestly don't know what to believe anymore. I'm ok with saying what every now and then and having to concentrate a bit to hear people in noisy environments. But, I'm concerned about thinking. I don't want hearing aid because it's one more medical thing in my life that I don't want to have to pay for. They are expensive in USA. Already have large expense with other medical issue. With all that in mind, is there any true effect of learning at my level of hearing loss or is it all in my head at this level?