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Making Sense of Sensory Losses As We

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Making Sense of Sensory Losses As We FS1378 (Revised) Making Sense of Sensory Losses as We Age — Childhood, Adulthood, Elderhood? Dena Kemmet, M.S., Extension Agent, NDSU Extension Service Sean Brotherson, Ph.D., Extension Family Science Specialist, NDSU Extension Service Our Senses and the Aging Process Understanding Sensory Loss The process of aging begins at birth and continues Sensory changes do not occur at the same age for throughout life. Change is an inevitable part of the each person, nor do all changes occur for everyone aging process. Sensation is the physical and mental or to the same degree. An awareness of different process that allows us to receive information from sensory changes and their effects can be helpful. our surrounding environment through the ears, skin, Studies have shown changes accelerate at these tongue, nostrils, eyes and other specialized sense approximate age ranges: organs. Key sensing processes include vision, n Vision — mid-50s hearing, touch, taste and smell. n Hearing — mid-40s Sensory loss is defined as a decreased ability n Touch — mid-50s to respond to stimuli that affect our senses (hearing, n Taste — mid-60s touch, etc.). For example, vision loss might mean that n Smell — mid-70s we cannot see a person across the street wave at us, Let’s make sense of the aging process by exploring or hearing loss might result in us struggling to hear the senses and ways we can make a difference. people speaking in a certain tone of voice. Sensory Sensory loss seems to be an almost inevitable loss is inevitable, but that does not mean adults who companion to growing old. Does that mean older are losing one or more of their senses have no options adults who are losing one or more of their senses available to them. are simply out of luck? Not at all. Cures may not be Physical changes associated with aging, beyond available for the major causes of age-related sensory gray hair and wrinkles, are not always visually loss, but armed with the right knowledge about which noticeable, are constantly changing and can affect age-related sensory losses are normal and which are us in many ways. not, we can better understand what to do about them. Imagine not being able to see a beautiful sunset, Understanding sensory loss can help individuals hear your grandchildren playing or smell your favorite adapt and accept these natural changes. Equally flowers. These losses affect people in different ways. important is not accepting a change as a normal part The impact of these losses can lead to social isolation, of aging without first understanding the loss. A variety loneliness and feelings of depression. of resources that can help minimize the impact of sensory losses as we age often are available. Alteration of the environment to compensate for age-related sensory losses is necessary for many older adults to maintain their independent living. Thorough knowledge of the changes in vision, taste, North Dakota State University smell, touch and hearing that accompany the aging Fargo, North Dakota process is essential to assessing environmental JUNE 2015 alteration. Vision Hearing and Aging and Aging As we age, the shape of the eye lens changes. The Loss of hearing is very gradual, starting at middle age. lens and cornea become less transparent, the pupil The loss appears to be caused by a decrease in the becomes smaller and the field of vision shrinks. Visual elasticity of the eardrum. difficulties may come with these physical changes in Hearing loss often develops slowly and quietly. the eye, such as: People may complain that they can hear the spoken n decreased ability to see objects clearly sounds, but they can’t understand what the speaker n decreased ability to focus on objects at different is saying. Words that are quite different can sound the distances same, such as tea/pea/key, shop/shot/shock or fine/ shine/sign. n decreased ability to function in low light levels Impaired hearing affects more older adults than n decreased ability to distinguish certain color any other chronic condition. Although only 2 percent of intensities people 55 and older are classified as legally deaf, 30 n decreased ability to correctly judge distances percent to 50 percent of older adults suffer a hearing Common types of vision loss include glaucoma, loss serious enough to negatively affect the quality of cataracts, macular degeneration and diabetic communication and interpersonal relationships. retinopathy. People have a decreased ability to hear high A problem in many homes that affects vision is an frequencies and sounds in general. improper amount of light. As we age, we need greater Sounds may be muffled and difficult to understand. amounts of light. Studies show that a person who is 80 Studies find that high-frequency sounds are filtered years old will need about three times more light than a out or not heard. Therefore, asking individuals to young adult to read a book. speak louder may not make the message easier to Color vision and contrast sensitivity also are understand. affected by aging. The aging lens and cornea cause People with decreased ability to hear may deny or glare by light scattering, leading to poor vision be embarrassed to talk about the problem. Hearing quality, especially when the pupil dilates in the dark. aids, while very beneficial, never can replace normal In addition to larger print, providing color contrast hearing. between the print and the paper can help reduce the Many background noises from radio, television, effort of reading. appliances, traffic or busy public gatherings all detract As changes occur in vision, schedule a visit to your from hearing normal conversation. Other obstacles optometrist to secure the proper glasses for optimal that may be treatable also could be playing a part in vision. Make needed changes around your home to hearing loss. compensate for changes in vision. To maximize your To accommodate an individual with hearing loss, visual capabilities in the home, increase the level try to cut down on background noise. Turn off the of light by using a higher watt light bulb and evenly television or radio during conversations. Ask for quiet distribute or balance the light sources to eliminate sections in restaurants, and try to sit away from the glare. Finally, remember the value of getting regular door at theaters. eye checkups to assess your eye health. Begin now to make hearing health a part of your lifestyle. Stay away from loud or prolonged noises when you can. Turn down the music volume. Buy power tools that have sound controls. When you must be around noise, either at work or at play, use something to protect your hearing. Taste, Smell Touch and Aging and Aging Many people are not aware that an individual’s sense Touch is a wonderful and needed sense. As we age, of smell and his or her sense of taste are closely the sense of touch decreases because the skin’s related. Sensory losses in taste and smell can lead to sensitivity decreases. The skin becomes less taut and other health concerns for aging individuals. has a loss of elasticity. Tissue loss occurs immediately At age 30, a person has 245 taste buds on each below the skin. These changes are attributed to of the tiny elevations (called papilla) on the tongue. changes in the amount of fat below the skin, as well as By age 70, the number of taste buds decreases to decreased numbers of nerve endings. approximately 88. The sense of taste changes slowly. Touch is a necessary sense that alerts us to Sweet and salty tastes seem to be the first changes in temperature, movement or pain. We put on affected. For older people, normal seasoning may more clothes when we feel the temperature cool on seem bland. Use of herbs instead of salt may be our skin. We move a hand away when someone leans one answer to increasing the flavor of foods without too heavily on it. increasing sodium content, especially for older adults Loss of tissue and elasticity in skin cells means who have high blood pressure. that older people may become less responsive to The lack of taste appeal may discourage the stimuli affecting our sense of touch. Because the skin older adult from eating, which may indirectly lead to loses sensitivity, an older adult may not experience poor nutrition. One way to compensate for the loss pain until the skin has been damaged. The reduced of taste sometimes seen with illness and aging is to fat can cause the body, particularly the extremities, to concentrate on contrasts in texture, temperature and bruise or even tear for no apparent reason. flavor in preparing foods. Reduced nerve endings can result in a person not Smell also makes things enjoyable. Our “odor noticing a cut, blister or other injury that can lead to memories” frequently have strong emotional qualities infection. and are associated with the good or bad experiences The decreased sensitivity may affect a person’s in which they occurred. Also, when eating a favorite ability to distinguish different stimuli or may reduce food, the taste is much more flavorful when a person their reaction time. For example, the older adult may is feeling healthy, as opposed to being congested. have difficulty differentiating coins or buttons or have Humans can recognize as many as 10,000 different difficulties with fine dexterity, such as catching or scents, compared with the sense of taste, which is picking up small objects. Other small motor skills, such limited to four basic categories: sweet, salty, sour, and as writing with a pen, also might be affected. bitter. The sense of smell is very important, but often taken for granted.
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