Cognitive decline ranges in severity from mild cognitive impairment (MCI) to Alzheimer’s disease and related dementias (ADRD). It is marked by memory loss and difficulty thinking and making decisions. Cognitive decline is a significant, common challenge to older adults’ well-being and their ability to live independently.
Today, cognitive impairment and ADRD are major global public health and social concerns as the population of older adults rises around the world. By 2050, more than 152 million people will be affected by these conditions. That’s why many countries, including the United States, see the prevention of ADRD as a key public health priority and are studying programs to help stem these diseases.
One way to prevent cognitive impairment and ADRD is to treat the problems that raise the risk for developing them. Two of these risk factors are hearing and vision loss. Currently, about 60 percent of people aged 70 years or older are affected by hearing loss, 40 percent are affected by vision loss, and 23 percent of older adults have both vision and hearing loss. Some studies have suggested that having both hearing and vision loss may be linked to poorer cognitive function or to a faster rate of cognitive decline.