Individuals with profound hearing loss cannot hear other people speaking unless they are extremely loud. Without a hearing aid, a person with profound hearing loss cannot understand speech. Most people with profound hearing loss are cochlear implant candidates.Most individuals with this type of hearing loss, who do not use hearing aids, are at a higher risk for developing dementia. This can be from auditory deprivation and cognitive decline. To hear what it sounds like for someone with a severe hearing loss, click here.