Over six decades of research point to a strong connection between cardiovascular health and hearing loss. Although there are many causes of hearing loss, cardiovascular disease may increase the impact of hearing loss. Scientists believe that it's all about blood flow.  The inner ears are extremely sensitive to blood flow. Heart problems can cause a buildup of plaque in the arteries and restrict blood flow, which also causes irreversible damage to the ear.  Also, the delicate nerves in the cochlea play an important role in translating noise in your ears to electrical impulses to your brain.
“The inner ear is so sensitive to blood flow that it is possible any abnormalities in the cardiovascular system could be noted here earlier than in other less sensitive parts of the body,” explains David Friedland, MD, Ph.D., of the Medical College of Wisconsin in Milwaukee. Dr. Friedland has been studying the hearing-cardiovascular connection for years.