Positive results have been found in mice models using both stem cells from fetal neuroectoderm and adult stem cells from the lateral ventricles and the dentate gyrus. : 177–188  Using harvested stem cells in stem cell therapies require immunosuppression to prevent the host from rejecting the transplants; creating induced pluripotent stem cells from the hosts own cells would mitigate this risk and has had some testing in other neurodegenerative diseases. : 177–188 


== References ==
By the age of 60, this number goes up to 70%. Construction workers also have an elevated risk. A screening program focused on construction workers employed at US Department of Energy facilities found 58% with significant abnormal hearing loss due to noise exposures at work. Occupational hearing loss is present in up to 33% of workers overall. Occupational exposure to noise causes 16% of adult disabling hearing loss worldwide.The following is a list of occupations that are most susceptible to hearing loss:
Agriculture
Mining
Police
Construction
Manufacturing
Utilities
Transportation
Military
Musicians
Orchestra conductors

Among musicians
Musicians, from classical orchestras to rock groups, are exposed to high decibel ranges. Some rock musicians experience noise-induced hearing loss from their music, and some studies have found that "symphonic musicians suffer from hearing impairment and that the impairment might be ascribed to symphonic music. "In terms of the population of musicians, usually the rates of hearing disorders is lower than other occupational groups. However, many exposure scenarios can be considered a risk of hearing disorders, and many individuals are negatively impacted by tinnitus and other hearing problems. While some population studies have shown that the risk for hearing loss increases as music exposure increases, other studies found little to no correlation between the two.