If you’re wondering how common hearing loss is, the research is plentiful and paints a crystal-clear picture: Hearing loss is highly prevalent. In fact, it is the third most common health issue for older adults.1 According to the World Health Organization, 20 percent of the global population, or 1.5 billion people, have hearing loss. That number is only rising, projected to reach 1.9 billion by 2030 and 2.5 billion by ...