{"id":383,"date":"2014-09-29T20:48:51","date_gmt":"2014-09-29T20:48:51","guid":{"rendered":"https:\/\/courses.candelalearning.com\/lifespandevelopment1x1\/?post_type=chapter&#038;p=383"},"modified":"2016-03-17T01:57:04","modified_gmt":"2016-03-17T01:57:04","slug":"physical-development-4","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/atd-herkimer-developmentalpsych\/chapter\/physical-development-4\/","title":{"raw":"Physical Development","rendered":"Physical Development"},"content":{"raw":"<h2>Life Expectancy and Quality of Life<\/h2>\r\nOne way to prepare for the future is to find ways to improve quality of life.\u00a0Life expectancy in 1900 was about 47 years. Today, life expectancy for all races is 77.9 (75.4 for males and 80.4 for females.) For whites, life expectancy is 75.9 for males and 80.8 for females. For black males, life expectancy is 70 and is 76.8 for black females (U. S. Census Bureau, 2011). Historic racism\u00a0or years of living under oppressive prejudice and discrimination can increase the incidence of stress-related illness and contribute to a lower life expectancy.\u00a0The United States ranks 17th\u00a0among other countries for its life expectancy for women and 19th\u00a0for men. Japanese women and Swedish men have the longest life expectancies (He et al., 2005).\r\n\r\n<img class=\"wp-image-936  aligncenter\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/1496\/2016\/03\/17015513\/lifeexpatbirth.png\" alt=\"Graph of life expectancy. All life expectancies have gone up between 1980 and 2007. White females have the longest life expectancy (80.8 years in 2007), then black females at 76.8, white males close behind at 75.9, and then black males with a life expectancy at 70 years.\" width=\"537\" height=\"398\" \/>\r\n\r\nIncreased life expectancy brings concern over the health and independence of those living longer. Greater attention is now being given to the number of years a person can expect to live without disability which is referred to as\u00a0active life expectancy.\u00a0When this distinction is made, we see that although women live longer than men, they are more at risk of living with disability (Weitz, 2007).\u00a0What factors contribute to poorer health?\u00a0Marriage has been linked to longevity, but spending years in a stressful marriage can increase the risk of illness.\u00a0This negative effect is experienced more by women than men and seems accumulates through the years. Its impact on health may not occur until a woman reaches 70 or older (Umberson, Williams, et. al., 2006). Sexism\u00a0can also create chronic stress.\u00a0The stress experienced by women as they work outside the home as well as care for family members can also ultimately have a negative impact on health.\u00a0Poorer health in women is further attributed to an increase in rates of smoking by women in recent years (He et als, 2005).\r\n\r\nThe shorter life expectancy for men in general, is attributed to greater stress, poorer attention to health, more involvement in dangerous occupations, and higher rates of death due to accidents, homicide, and suicide.\u00a0Social support can increase longevity.\u00a0For men, life expectancy and health seems to improve with marriage. Spouses are less likely to engage in risky health practices and wives are more likely to monitor their husband's diet and health regimes. But men who live in stressful marriages can also experience poorer health as a result.\r\n\r\nKey players in improving the quality of life among older adults will be those adults.\u00a0By exercising, reducing stress, stopping smoking, limiting use of alcohol, and consuming more fruits and vegetables, older adults can expect to live longer and more active lives.\u00a0(He et. als, 2005).\u00a0Stress reduction both in late adulthood and earlier in life is also crucial.\u00a0The reduction of societal stressors can promote active life expectancy. In the last 40 years, smoking rates have decreased, but obesity has increased, and physical activity has only modestly increased.\r\n\r\n<img class=\"wp-image-934 aligncenter\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/1496\/2016\/03\/17011807\/oldexercise.png\" alt=\"graphs showing the participation of men and women in aerobic and muscle-strengthening activities, divided into age groups. Over 20% of men between 18-44 exercise, between 15-20% of men between 45-64, and close to 10% for men over 65. Women's raters are lower, with around 20% for those between 18-44, between 15-20% between 45-64, then under 10% for women over 65.\" width=\"517\" height=\"381\" \/>\r\n\r\n&nbsp;\r\n<h2>Attitudes about Aging<\/h2>\r\nStereotypes about people of in late adulthood lead many to assume that aging automatically brings poor health and mental decline.\u00a0These stereotypes are reflected in everyday conversations, the media and even in greeting cards (Overstreet, 2006).\u00a0The following examples serve to illustrate.\r\n<p style=\"padding-left: 60px;\">1) Grandpa, fishing pole in one hand, pipe in the other, sits on the ground and completes a story being told to his grandson with \". . . and that, Jimmy, is the tale of my very first colonoscopy.\"\u00a0The message inside the card reads, \"Welcome to the gross personal story years.\"\u00a0(Shoebox, A Division of Hallmark Cards.)<\/p>\r\n<p style=\"padding-left: 60px;\">2) An older woman in a barber shop cuts the hair of an older, dozing man.\u00a0\"So, what do you say today, Earl?\" she asks.\u00a0The inside message reads, \"Welcome to the age where pretty much anyplace is a good place for a nap.\"\u00a0(Shoebox, A Division of Hallmark Cards.)<\/p>\r\n<p style=\"padding-left: 60px;\">3) A crotchety old man with wire glasses, a crumpled hat, and a bow tie grimaces and the card reads, \"Another year older?\u00a0You're at the age where you should start eatin' right, exercisin', and takin' vitamins . . .\"\u00a0The inside reads, \"Of course you're also at the age where you can ignore advice by actin like you can't hear it.\"\u00a0(Hallmark Cards, Inc.)<\/p>\r\nOf course, these cards are made because they are popular.\u00a0Age is not revered in the United States, and so laughing about getting older is one way to get relief.\u00a0The attitudes are examples of\u00a0ageism,\u00a0prejudice based on age.\u00a0Stereotypes such as these can lead to a\u00a0self-fulfilling prophecy\u00a0in which beliefs about one's ability results in actions that make it come true.\u00a0A positive, optimistic outlook about aging and the impact one can have on improving health is essential to health and longevity.\u00a0Removing societal stereotypes about aging and helping older adults reject those notions of aging is another way to promote health and active life expectancy among the old.\r\n<h2>Primary and Secondary Aging<\/h2>\r\nHealthcare providers need to be aware of which aspects of aging are reversible and which ones are inevitable.\u00a0By keeping this distinction in mind, caregivers may be more objective and accurate when diagnosing and treating older patients.\u00a0And a positive attitude can go a long way toward motivating patients to stick with a health regime.\u00a0Unfortunately, stereotypes can lead to misdiagnosis.\u00a0For example, it is estimated that about 10 percent of older patients diagnosed with dementia are actually depressed or suffering from some other psychological illness (Berger, 2005).\u00a0The failure to recognize and treat psychological problems in older patients may be one consequence of such stereotypes.\r\n\r\nPrimary aging\u00a0refers to the inevitable changes associated with aging (Busse, 1969). These changes include changes in the skin and hair, height and weight, hearing loss, and eye disease.\u00a0However, some of these changes can be reduced by limiting exposure to the sun, eating a nutritious diet, and exercising.\r\n\r\nSkin and hair\u00a0change as we age.\u00a0The\u00a0skin becomes drier, thinner, and less elastic as we age. Scars and imperfections become more noticeable as fewer cells grow underneath the surface of the skin. Exposure to the sun, or\u00a0photoaging,\u00a0accelerates these changes.\u00a0Graying hair is inevitable. And hair loss all over the body becomes more prevalent.\r\n\r\nHeight and weight\u00a0vary with age.\u00a0Older people are more than an inch shorter than they were during early adulthood (Masoro in Berger, 2005). This is thought to be due to a settling of the vertebrae and a lack of muscle strength in the back. Older people weigh less than they did in mid-life. Bones lose density and can become brittle.\u00a0This is especially prevalent in women.\u00a0However, weight training can help increase bone density after just a few weeks of training.\r\n\r\nMuscle loss\u00a0occurs in late adulthood and is most noticeable in men as they lose muscle mass.\u00a0Maintaining strong leg and heart muscles is important for independence.\u00a0Weight-lifting, walking, swimming, or engaging in other cardiovascular exercises can help strengthen the muscles and prevent atrophy.\r\n\r\n<strong>Visual Problems<\/strong>:\u00a0The\u00a0majority of people over 65 have some difficulty with vision, but most is easily corrected with prescriptive lenses.\u00a0Three percent of those 65 to 74 and 8 percent of those 75 and older have hearing or vision limitations that hinder activity.\u00a0The\u00a0most common causes of vision loss or impairment are glaucoma, cataracts, age-related macular degeneration, and diabetic retinopathy (He et al., 2005).\r\n\r\n<strong>Hearing Loss<\/strong>\u00a0is experienced by 30 percent of people age 70 and older.\u00a0Almost half of people over 85 have some hearing loss (He et al., 2005).\u00a0Among those who are in nursing homes, rates are higher.\u00a0Older adults are more likely to seek help with vision impairment than with hearing loss, perhaps due to the stereotype that older people who have difficulty hearing are also less mentally alert.\u00a0Being unable to hear causes people to withdraw from conversation and others to ignore them or shout.\u00a0Unfortunately, shouting is usually high pitched and can be harder to hear than lower tones.\u00a0The\u00a0speaker may also begin to use a patronizing form of \u2018baby talk' known as\u00a0<strong>elderspeak<\/strong>\u00a0(See et al., 1999).\u00a0This language reflects the stereotypes of older adults as being dependent, demented, and childlike.\u00a0Image others speaking to you in that way.\u00a0How would you feel?\u00a0I am reminded of a man dying at home and a hospice worker, on shift for the first time, comes to his bedside and shouts, \"Hi, baby.\u00a0Want me to rub your little feet?\"\u00a0His response was an indignant look of disapproval.\r\n\r\nHearing loss is more prevalent in men than women.\u00a0And it is experienced by more white, non-Hispanics than by Black men and women.\u00a0Smoking, middle ear infections, and exposure to loud noises increase hearing loss.\r\n\r\nIn summary, primary aging can be compensated for through exercise, corrective lenses, nutrition, and hearing aids. And, more importantly, by reducing stereotypes about aging, people of age can maintain self-respect, recognize their own strengths, and count on receiving the respect and social inclusion they deserve.\r\n<h2>Secondary Aging<\/h2>\r\nSecondary aging\u00a0refers to changes that are caused by illness or disease. These illnesses reduce independence, impact quality of life, affect family members and other caregivers, and bring financial burden.\u00a0Some of the most prevalent illnesses that cause impairment are discussed below.\r\n\r\n<strong>Arthritis<\/strong>:\u00a0This is the leading cause of disability in older adults.\u00a0Arthritis results in swelling of the joints and connective tissue that limits mobility.\u00a0Arthritis is more common among women than men and increases with age.\u00a0About 19.3 percent of people over 75 are disabled with arthritis; 11.4 percent of people between 65 and 74 experience this disability.\r\n\r\n<img class=\"wp-image-933  aligncenter\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/1496\/2016\/03\/17011803\/jointpain.png\" alt=\"percentage of people who complain of joint pain within the past 30 days. Around 50% of adults 75 years and older experienced joint pain, and between 45-50% of adults between 65-74, around 40% of adults between 44-64, and around 20% between ages 18 and 44.\" width=\"525\" height=\"388\" \/>\r\n\r\n&nbsp;\r\n\r\n<strong>Hypertension<\/strong>: Hypertension or high blood pressure and associated heart disease and circulatory conditions increase with age.\u00a0Hypertension disables 11.1 percent of 65 to 74 year olds and 17.1 percent of people over 75.\u00a0Rates are higher among women and Blacks.\u00a0Rates are highest for women over 75.\r\n\r\n<strong>Heart Disease and Stroke<\/strong>:\u00a0Coronary disease and stroke are higher among older men than women. The incidence of stroke is lower than that of coronary disease.\r\n\r\n<strong>Diabetes<\/strong>:\u00a0In 2008, 27 percent of those 65 and older had diabetes. Rates are higher among\u00a0Mexican origin individuals\u00a0and Blacks than non-Hispanic whites. The treatment for diabetes includes dietary changes, increasing physical activity, weight loss for those who are overweight, and medication (National Institute on Aging, 2011).\r\n\r\n<img class=\"wp-image-932  aligncenter\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/1496\/2016\/03\/17011759\/diabetes.png\" alt=\"Bar graph of diabetes prevalence, showing the increase in prevalence between 2005-2008 from 1988 and 1994. Between 2005-2008, 27% of people 65 and older had diabetes.\" width=\"544\" height=\"392\" \/>\r\n\r\n&nbsp;\r\n\r\n<strong>Cancer<\/strong>:\u00a0Men over 75 have the highest rates of cancer at 28 percent.\u00a0Women 65 and older have rates of 17 percent.\u00a0Rates for older non-Hispanic Whites are twice as high as for Hispanics and non-Hispanic Blacks.\u00a0The\u00a0most common types of cancer found in men are prostate and lung cancer.\u00a0Breast and lung cancer are the most common forms in women.\r\n\r\n<img class=\"wp-image-931  aligncenter\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/1496\/2016\/03\/17011755\/cancer-prevalence.png\" alt=\"Line graph of respondent-reported lifetime cancer prevalence. Over 25% of men over 75 report cancer, around 15% between 65-74 report cancer. Around 18% of women over 75 report having cancer, and nearly 15% of those between 65 and 74. \" width=\"553\" height=\"410\" \/>\r\n\r\n&nbsp;\r\n\r\n<strong>Osteoporosis<\/strong>:\u00a0Osteoporosis increases with age as bones become brittle and lose minerals.\u00a0Bone loss is four times more likely in women than in men and becomes even more prevalent in women 85 and older.\u00a0Whites suffer osteoporosis more than do non-Hispanic Blacks.\r\n\r\n<strong>Alzheimer's disease<\/strong>:\u00a0Between 2.4 and 5.1 million people in the United States suffer with Alzheimer's disease (AD) (National Institute on Aging, 2011).\u00a0This disease is not becomes more prevalent with age, but is not inevitable. This typically appears after age 60 but develops slowly for years before it's appearance. Social support, and aerobic exercise can reduce the risk of Alzheimer's disease.\u00a0As the large cohort of Baby\u00a0Boomers begins turning 65 in 2011, the number of cases of\u00a0Alzheimer's disease is expected to increase dramatically. Where will these people receive care? Seventy percent of AD patients are cared for in the home.\u00a0Such care can be emotionally, financially, and physically stressful.\u00a0Most AD patients live 8 to 10 years with the disease and long-term care costs an average of $174,000 per patient (He et al., 2005).\r\n<h2>Normal Aging<\/h2>\r\nThe Baltimore Longitudinal Study on Aging (2006) began in 1958 and has traced the aging process in 1,400 people from age 20 to 90.\u00a0Researchers from the BLSA have found that the aging process varies significantly from individual to individual and from one organ system to another.\u00a0Kidney function may deteriorate earlier in some individuals. Bone strength declines more rapidly in others.\u00a0Much of this is determined by genetics, lifestyle, and disease.\u00a0However, some generalizations about the aging process have been found:\r\n<ul>\r\n\t<li><span class=\"tight\">Heart muscles thicken with age<\/span><\/li>\r\n\t<li><span class=\"tight\">Arteries become less flexible<\/span><\/li>\r\n\t<li><span class=\"tight\">Lung capacity diminishes<\/span><\/li>\r\n\t<li><span class=\"tight\">Brain cells lose some functioning but new neurons can also be produced<\/span><\/li>\r\n\t<li><span class=\"tight\">Kidneys become less efficient in removing waste from the blood<\/span><\/li>\r\n\t<li><span class=\"tight\">The bladder loses its ability to store urine<\/span><\/li>\r\n\t<li><span class=\"tight\">Body fat stabilizes and then declines<\/span><\/li>\r\n\t<li><span class=\"tight\">Muscle mass is lost without exercise<\/span><\/li>\r\n\t<li><span class=\"tight\">Bone mineral is lost.\u00a0Weight bearing exercise slows this down.<\/span><\/li>\r\n<\/ul>\r\n<h1>Theories of Aging<\/h1>\r\n<h2>Why do we age?<\/h2>\r\nThere are a number of attempts to explain why we age and many factors that contribute to aging.\u00a0Genetics, diet, lifestyle, activity, and exposure to pollutants all play a role in the aging process.\r\n\r\n<strong>Cell Life\u00a0<\/strong>\r\n\r\nCells divide a limited number of times and then stop.\u00a0This\u00a0phenomenon, known as the\u00a0Hayflick limit,\u00a0is evidenced in cells studied in test tubes which divide about 50 times before becoming senescent.\u00a0Senescent cells do not die.\u00a0They simply stop replicating.\u00a0Senescent cells can help limit the growth of other cells which may reduce risk of developing tumors when younger, but can alter genes later in life and result in promoting the growth of tumors as we age (Dollemore, 2006).\u00a0Limited cell growth is attributed to\u00a0telomeres\u00a0which are the tips of the protective coating around chromosomes.\u00a0Each time cells replicate, the telomere is shortened.\u00a0Eventually, loss of telomere length is thought to create damage to chromosomes and produce cell senescence.\r\n<h2><strong>Biochemistry and Aging<\/strong><\/h2>\r\n<strong>Free Radical Theory<\/strong>:\u00a0As we metabolize oxygen, mitochondria in the cells convert oxygen to adenosine triphosphate (ATP) which provides energy to the cell.\u00a0Unpaired electrons are a by product of this process and these unstable electrons cause cellular damage as they find other electrons with which to bond.\u00a0These free radicals have some benefits and are used by the immune system to destroy bacteria.\u00a0However, cellular\u00a0damage accumulates and eventually reduces functioning of organs and systems.\u00a0Many food products and vitamin supplements are promoted as age-reducing.\u00a0Antioxidant drugs have been shown to increase the longevity in nematodes (small worms), but the ability to slow the aging process by introducing antioxidants in the diet is still controversial.\r\n\r\n<strong>Protein Crosslinking<\/strong>:\u00a0This theory focuses on the role blood sugar, or glucose, plays in the aging of cells.\u00a0Glucose molecules attach themselves to proteins and form chains or crosslinks.\u00a0These crosslinks reduce the flexibility of tissue and tissue become stiff and loses functioning.\u00a0The\u00a0circulatory system becomes less efficient as the tissue of the heart, arteries and lungs lose flexibility.\u00a0And joints grow stiff as glucose combines with collegen.\u00a0(To conduct your own demonstration of this process, take a piece of meat and place it in a hot skillet.\u00a0The\u00a0outer surface of the meat will caramelize and the tissue will become stiff and hard.)\r\n\r\n<strong>DNA Damage<\/strong>:\u00a0As we live, DNA is damaged by environmental factors such as toxic agents, pollutants, and sun exposure (Dollemore, 2006). This results in deletions of genetic material, and mutations in the DNA that is duplicated in new cells.\u00a0The\u00a0accumulation of these errors results in reduced functioning in cells and tissues.\r\n\r\n<strong>Decline in the Immune System<\/strong>:\u00a0As we age, B-lymphocytes and T-lymphocytes become less active.\u00a0These cells are crucial to our immune system as they secrete antibodies and directly attack infected cells.\u00a0The\u00a0thymus, where T-cells are manufactured, shrinks as we age. This reduces our body's ability to fight infection Berger, 2005).","rendered":"<h2>Life Expectancy and Quality of Life<\/h2>\n<p>One way to prepare for the future is to find ways to improve quality of life.\u00a0Life expectancy in 1900 was about 47 years. Today, life expectancy for all races is 77.9 (75.4 for males and 80.4 for females.) For whites, life expectancy is 75.9 for males and 80.8 for females. For black males, life expectancy is 70 and is 76.8 for black females (U. S. Census Bureau, 2011). Historic racism\u00a0or years of living under oppressive prejudice and discrimination can increase the incidence of stress-related illness and contribute to a lower life expectancy.\u00a0The United States ranks 17th\u00a0among other countries for its life expectancy for women and 19th\u00a0for men. Japanese women and Swedish men have the longest life expectancies (He et al., 2005).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-936  aligncenter\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/1496\/2016\/03\/17015513\/lifeexpatbirth.png\" alt=\"Graph of life expectancy. All life expectancies have gone up between 1980 and 2007. White females have the longest life expectancy (80.8 years in 2007), then black females at 76.8, white males close behind at 75.9, and then black males with a life expectancy at 70 years.\" width=\"537\" height=\"398\" \/><\/p>\n<p>Increased life expectancy brings concern over the health and independence of those living longer. Greater attention is now being given to the number of years a person can expect to live without disability which is referred to as\u00a0active life expectancy.\u00a0When this distinction is made, we see that although women live longer than men, they are more at risk of living with disability (Weitz, 2007).\u00a0What factors contribute to poorer health?\u00a0Marriage has been linked to longevity, but spending years in a stressful marriage can increase the risk of illness.\u00a0This negative effect is experienced more by women than men and seems accumulates through the years. Its impact on health may not occur until a woman reaches 70 or older (Umberson, Williams, et. al., 2006). Sexism\u00a0can also create chronic stress.\u00a0The stress experienced by women as they work outside the home as well as care for family members can also ultimately have a negative impact on health.\u00a0Poorer health in women is further attributed to an increase in rates of smoking by women in recent years (He et als, 2005).<\/p>\n<p>The shorter life expectancy for men in general, is attributed to greater stress, poorer attention to health, more involvement in dangerous occupations, and higher rates of death due to accidents, homicide, and suicide.\u00a0Social support can increase longevity.\u00a0For men, life expectancy and health seems to improve with marriage. Spouses are less likely to engage in risky health practices and wives are more likely to monitor their husband&#8217;s diet and health regimes. But men who live in stressful marriages can also experience poorer health as a result.<\/p>\n<p>Key players in improving the quality of life among older adults will be those adults.\u00a0By exercising, reducing stress, stopping smoking, limiting use of alcohol, and consuming more fruits and vegetables, older adults can expect to live longer and more active lives.\u00a0(He et. als, 2005).\u00a0Stress reduction both in late adulthood and earlier in life is also crucial.\u00a0The reduction of societal stressors can promote active life expectancy. In the last 40 years, smoking rates have decreased, but obesity has increased, and physical activity has only modestly increased.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-934 aligncenter\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/1496\/2016\/03\/17011807\/oldexercise.png\" alt=\"graphs showing the participation of men and women in aerobic and muscle-strengthening activities, divided into age groups. Over 20% of men between 18-44 exercise, between 15-20% of men between 45-64, and close to 10% for men over 65. Women's raters are lower, with around 20% for those between 18-44, between 15-20% between 45-64, then under 10% for women over 65.\" width=\"517\" height=\"381\" \/><\/p>\n<p>&nbsp;<\/p>\n<h2>Attitudes about Aging<\/h2>\n<p>Stereotypes about people of in late adulthood lead many to assume that aging automatically brings poor health and mental decline.\u00a0These stereotypes are reflected in everyday conversations, the media and even in greeting cards (Overstreet, 2006).\u00a0The following examples serve to illustrate.<\/p>\n<p style=\"padding-left: 60px;\">1) Grandpa, fishing pole in one hand, pipe in the other, sits on the ground and completes a story being told to his grandson with &#8220;. . . and that, Jimmy, is the tale of my very first colonoscopy.&#8221;\u00a0The message inside the card reads, &#8220;Welcome to the gross personal story years.&#8221;\u00a0(Shoebox, A Division of Hallmark Cards.)<\/p>\n<p style=\"padding-left: 60px;\">2) An older woman in a barber shop cuts the hair of an older, dozing man.\u00a0&#8220;So, what do you say today, Earl?&#8221; she asks.\u00a0The inside message reads, &#8220;Welcome to the age where pretty much anyplace is a good place for a nap.&#8221;\u00a0(Shoebox, A Division of Hallmark Cards.)<\/p>\n<p style=\"padding-left: 60px;\">3) A crotchety old man with wire glasses, a crumpled hat, and a bow tie grimaces and the card reads, &#8220;Another year older?\u00a0You&#8217;re at the age where you should start eatin&#8217; right, exercisin&#8217;, and takin&#8217; vitamins . . .&#8221;\u00a0The inside reads, &#8220;Of course you&#8217;re also at the age where you can ignore advice by actin like you can&#8217;t hear it.&#8221;\u00a0(Hallmark Cards, Inc.)<\/p>\n<p>Of course, these cards are made because they are popular.\u00a0Age is not revered in the United States, and so laughing about getting older is one way to get relief.\u00a0The attitudes are examples of\u00a0ageism,\u00a0prejudice based on age.\u00a0Stereotypes such as these can lead to a\u00a0self-fulfilling prophecy\u00a0in which beliefs about one&#8217;s ability results in actions that make it come true.\u00a0A positive, optimistic outlook about aging and the impact one can have on improving health is essential to health and longevity.\u00a0Removing societal stereotypes about aging and helping older adults reject those notions of aging is another way to promote health and active life expectancy among the old.<\/p>\n<h2>Primary and Secondary Aging<\/h2>\n<p>Healthcare providers need to be aware of which aspects of aging are reversible and which ones are inevitable.\u00a0By keeping this distinction in mind, caregivers may be more objective and accurate when diagnosing and treating older patients.\u00a0And a positive attitude can go a long way toward motivating patients to stick with a health regime.\u00a0Unfortunately, stereotypes can lead to misdiagnosis.\u00a0For example, it is estimated that about 10 percent of older patients diagnosed with dementia are actually depressed or suffering from some other psychological illness (Berger, 2005).\u00a0The failure to recognize and treat psychological problems in older patients may be one consequence of such stereotypes.<\/p>\n<p>Primary aging\u00a0refers to the inevitable changes associated with aging (Busse, 1969). These changes include changes in the skin and hair, height and weight, hearing loss, and eye disease.\u00a0However, some of these changes can be reduced by limiting exposure to the sun, eating a nutritious diet, and exercising.<\/p>\n<p>Skin and hair\u00a0change as we age.\u00a0The\u00a0skin becomes drier, thinner, and less elastic as we age. Scars and imperfections become more noticeable as fewer cells grow underneath the surface of the skin. Exposure to the sun, or\u00a0photoaging,\u00a0accelerates these changes.\u00a0Graying hair is inevitable. And hair loss all over the body becomes more prevalent.<\/p>\n<p>Height and weight\u00a0vary with age.\u00a0Older people are more than an inch shorter than they were during early adulthood (Masoro in Berger, 2005). This is thought to be due to a settling of the vertebrae and a lack of muscle strength in the back. Older people weigh less than they did in mid-life. Bones lose density and can become brittle.\u00a0This is especially prevalent in women.\u00a0However, weight training can help increase bone density after just a few weeks of training.<\/p>\n<p>Muscle loss\u00a0occurs in late adulthood and is most noticeable in men as they lose muscle mass.\u00a0Maintaining strong leg and heart muscles is important for independence.\u00a0Weight-lifting, walking, swimming, or engaging in other cardiovascular exercises can help strengthen the muscles and prevent atrophy.<\/p>\n<p><strong>Visual Problems<\/strong>:\u00a0The\u00a0majority of people over 65 have some difficulty with vision, but most is easily corrected with prescriptive lenses.\u00a0Three percent of those 65 to 74 and 8 percent of those 75 and older have hearing or vision limitations that hinder activity.\u00a0The\u00a0most common causes of vision loss or impairment are glaucoma, cataracts, age-related macular degeneration, and diabetic retinopathy (He et al., 2005).<\/p>\n<p><strong>Hearing Loss<\/strong>\u00a0is experienced by 30 percent of people age 70 and older.\u00a0Almost half of people over 85 have some hearing loss (He et al., 2005).\u00a0Among those who are in nursing homes, rates are higher.\u00a0Older adults are more likely to seek help with vision impairment than with hearing loss, perhaps due to the stereotype that older people who have difficulty hearing are also less mentally alert.\u00a0Being unable to hear causes people to withdraw from conversation and others to ignore them or shout.\u00a0Unfortunately, shouting is usually high pitched and can be harder to hear than lower tones.\u00a0The\u00a0speaker may also begin to use a patronizing form of \u2018baby talk&#8217; known as\u00a0<strong>elderspeak<\/strong>\u00a0(See et al., 1999).\u00a0This language reflects the stereotypes of older adults as being dependent, demented, and childlike.\u00a0Image others speaking to you in that way.\u00a0How would you feel?\u00a0I am reminded of a man dying at home and a hospice worker, on shift for the first time, comes to his bedside and shouts, &#8220;Hi, baby.\u00a0Want me to rub your little feet?&#8221;\u00a0His response was an indignant look of disapproval.<\/p>\n<p>Hearing loss is more prevalent in men than women.\u00a0And it is experienced by more white, non-Hispanics than by Black men and women.\u00a0Smoking, middle ear infections, and exposure to loud noises increase hearing loss.<\/p>\n<p>In summary, primary aging can be compensated for through exercise, corrective lenses, nutrition, and hearing aids. And, more importantly, by reducing stereotypes about aging, people of age can maintain self-respect, recognize their own strengths, and count on receiving the respect and social inclusion they deserve.<\/p>\n<h2>Secondary Aging<\/h2>\n<p>Secondary aging\u00a0refers to changes that are caused by illness or disease. These illnesses reduce independence, impact quality of life, affect family members and other caregivers, and bring financial burden.\u00a0Some of the most prevalent illnesses that cause impairment are discussed below.<\/p>\n<p><strong>Arthritis<\/strong>:\u00a0This is the leading cause of disability in older adults.\u00a0Arthritis results in swelling of the joints and connective tissue that limits mobility.\u00a0Arthritis is more common among women than men and increases with age.\u00a0About 19.3 percent of people over 75 are disabled with arthritis; 11.4 percent of people between 65 and 74 experience this disability.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-933  aligncenter\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/1496\/2016\/03\/17011803\/jointpain.png\" alt=\"percentage of people who complain of joint pain within the past 30 days. Around 50% of adults 75 years and older experienced joint pain, and between 45-50% of adults between 65-74, around 40% of adults between 44-64, and around 20% between ages 18 and 44.\" width=\"525\" height=\"388\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Hypertension<\/strong>: Hypertension or high blood pressure and associated heart disease and circulatory conditions increase with age.\u00a0Hypertension disables 11.1 percent of 65 to 74 year olds and 17.1 percent of people over 75.\u00a0Rates are higher among women and Blacks.\u00a0Rates are highest for women over 75.<\/p>\n<p><strong>Heart Disease and Stroke<\/strong>:\u00a0Coronary disease and stroke are higher among older men than women. The incidence of stroke is lower than that of coronary disease.<\/p>\n<p><strong>Diabetes<\/strong>:\u00a0In 2008, 27 percent of those 65 and older had diabetes. Rates are higher among\u00a0Mexican origin individuals\u00a0and Blacks than non-Hispanic whites. The treatment for diabetes includes dietary changes, increasing physical activity, weight loss for those who are overweight, and medication (National Institute on Aging, 2011).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-932  aligncenter\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/1496\/2016\/03\/17011759\/diabetes.png\" alt=\"Bar graph of diabetes prevalence, showing the increase in prevalence between 2005-2008 from 1988 and 1994. Between 2005-2008, 27% of people 65 and older had diabetes.\" width=\"544\" height=\"392\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Cancer<\/strong>:\u00a0Men over 75 have the highest rates of cancer at 28 percent.\u00a0Women 65 and older have rates of 17 percent.\u00a0Rates for older non-Hispanic Whites are twice as high as for Hispanics and non-Hispanic Blacks.\u00a0The\u00a0most common types of cancer found in men are prostate and lung cancer.\u00a0Breast and lung cancer are the most common forms in women.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-931  aligncenter\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images-archive-read-only\/wp-content\/uploads\/sites\/1496\/2016\/03\/17011755\/cancer-prevalence.png\" alt=\"Line graph of respondent-reported lifetime cancer prevalence. Over 25% of men over 75 report cancer, around 15% between 65-74 report cancer. Around 18% of women over 75 report having cancer, and nearly 15% of those between 65 and 74.\" width=\"553\" height=\"410\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Osteoporosis<\/strong>:\u00a0Osteoporosis increases with age as bones become brittle and lose minerals.\u00a0Bone loss is four times more likely in women than in men and becomes even more prevalent in women 85 and older.\u00a0Whites suffer osteoporosis more than do non-Hispanic Blacks.<\/p>\n<p><strong>Alzheimer&#8217;s disease<\/strong>:\u00a0Between 2.4 and 5.1 million people in the United States suffer with Alzheimer&#8217;s disease (AD) (National Institute on Aging, 2011).\u00a0This disease is not becomes more prevalent with age, but is not inevitable. This typically appears after age 60 but develops slowly for years before it&#8217;s appearance. Social support, and aerobic exercise can reduce the risk of Alzheimer&#8217;s disease.\u00a0As the large cohort of Baby\u00a0Boomers begins turning 65 in 2011, the number of cases of\u00a0Alzheimer&#8217;s disease is expected to increase dramatically. Where will these people receive care? Seventy percent of AD patients are cared for in the home.\u00a0Such care can be emotionally, financially, and physically stressful.\u00a0Most AD patients live 8 to 10 years with the disease and long-term care costs an average of $174,000 per patient (He et al., 2005).<\/p>\n<h2>Normal Aging<\/h2>\n<p>The Baltimore Longitudinal Study on Aging (2006) began in 1958 and has traced the aging process in 1,400 people from age 20 to 90.\u00a0Researchers from the BLSA have found that the aging process varies significantly from individual to individual and from one organ system to another.\u00a0Kidney function may deteriorate earlier in some individuals. Bone strength declines more rapidly in others.\u00a0Much of this is determined by genetics, lifestyle, and disease.\u00a0However, some generalizations about the aging process have been found:<\/p>\n<ul>\n<li><span class=\"tight\">Heart muscles thicken with age<\/span><\/li>\n<li><span class=\"tight\">Arteries become less flexible<\/span><\/li>\n<li><span class=\"tight\">Lung capacity diminishes<\/span><\/li>\n<li><span class=\"tight\">Brain cells lose some functioning but new neurons can also be produced<\/span><\/li>\n<li><span class=\"tight\">Kidneys become less efficient in removing waste from the blood<\/span><\/li>\n<li><span class=\"tight\">The bladder loses its ability to store urine<\/span><\/li>\n<li><span class=\"tight\">Body fat stabilizes and then declines<\/span><\/li>\n<li><span class=\"tight\">Muscle mass is lost without exercise<\/span><\/li>\n<li><span class=\"tight\">Bone mineral is lost.\u00a0Weight bearing exercise slows this down.<\/span><\/li>\n<\/ul>\n<h1>Theories of Aging<\/h1>\n<h2>Why do we age?<\/h2>\n<p>There are a number of attempts to explain why we age and many factors that contribute to aging.\u00a0Genetics, diet, lifestyle, activity, and exposure to pollutants all play a role in the aging process.<\/p>\n<p><strong>Cell Life\u00a0<\/strong><\/p>\n<p>Cells divide a limited number of times and then stop.\u00a0This\u00a0phenomenon, known as the\u00a0Hayflick limit,\u00a0is evidenced in cells studied in test tubes which divide about 50 times before becoming senescent.\u00a0Senescent cells do not die.\u00a0They simply stop replicating.\u00a0Senescent cells can help limit the growth of other cells which may reduce risk of developing tumors when younger, but can alter genes later in life and result in promoting the growth of tumors as we age (Dollemore, 2006).\u00a0Limited cell growth is attributed to\u00a0telomeres\u00a0which are the tips of the protective coating around chromosomes.\u00a0Each time cells replicate, the telomere is shortened.\u00a0Eventually, loss of telomere length is thought to create damage to chromosomes and produce cell senescence.<\/p>\n<h2><strong>Biochemistry and Aging<\/strong><\/h2>\n<p><strong>Free Radical Theory<\/strong>:\u00a0As we metabolize oxygen, mitochondria in the cells convert oxygen to adenosine triphosphate (ATP) which provides energy to the cell.\u00a0Unpaired electrons are a by product of this process and these unstable electrons cause cellular damage as they find other electrons with which to bond.\u00a0These free radicals have some benefits and are used by the immune system to destroy bacteria.\u00a0However, cellular\u00a0damage accumulates and eventually reduces functioning of organs and systems.\u00a0Many food products and vitamin supplements are promoted as age-reducing.\u00a0Antioxidant drugs have been shown to increase the longevity in nematodes (small worms), but the ability to slow the aging process by introducing antioxidants in the diet is still controversial.<\/p>\n<p><strong>Protein Crosslinking<\/strong>:\u00a0This theory focuses on the role blood sugar, or glucose, plays in the aging of cells.\u00a0Glucose molecules attach themselves to proteins and form chains or crosslinks.\u00a0These crosslinks reduce the flexibility of tissue and tissue become stiff and loses functioning.\u00a0The\u00a0circulatory system becomes less efficient as the tissue of the heart, arteries and lungs lose flexibility.\u00a0And joints grow stiff as glucose combines with collegen.\u00a0(To conduct your own demonstration of this process, take a piece of meat and place it in a hot skillet.\u00a0The\u00a0outer surface of the meat will caramelize and the tissue will become stiff and hard.)<\/p>\n<p><strong>DNA Damage<\/strong>:\u00a0As we live, DNA is damaged by environmental factors such as toxic agents, pollutants, and sun exposure (Dollemore, 2006). This results in deletions of genetic material, and mutations in the DNA that is duplicated in new cells.\u00a0The\u00a0accumulation of these errors results in reduced functioning in cells and tissues.<\/p>\n<p><strong>Decline in the Immune System<\/strong>:\u00a0As we age, B-lymphocytes and T-lymphocytes become less active.\u00a0These cells are crucial to our immune system as they secrete antibodies and directly attack infected cells.\u00a0The\u00a0thymus, where T-cells are manufactured, shrinks as we age. This reduces our body&#8217;s ability to fight infection Berger, 2005).<\/p>\n\n\t\t\t <section class=\"citations-section\" role=\"contentinfo\">\n\t\t\t <h3>Candela Citations<\/h3>\n\t\t\t\t\t <div>\n\t\t\t\t\t\t <div id=\"citation-list-383\">\n\t\t\t\t\t\t\t <div class=\"licensing\"><div class=\"license-attribution-dropdown-subheading\">CC licensed content, Shared previously<\/div><ul class=\"citation-list\"><li>Psyc 200 Lifespan Psychology. <strong>Authored by<\/strong>: Laura Overstreet. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"http:\/\/opencourselibrary.org\/econ-201\/\">http:\/\/opencourselibrary.org\/econ-201\/<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em><\/li><\/ul><\/div>\n\t\t\t\t\t\t <\/div>\n\t\t\t\t\t <\/div>\n\t\t\t <\/section>","protected":false},"author":74,"menu_order":2,"template":"","meta":{"_candela_citation":"[{\"type\":\"cc\",\"description\":\"Psyc 200 Lifespan Psychology\",\"author\":\"Laura Overstreet\",\"organization\":\"\",\"url\":\"http:\/\/opencourselibrary.org\/econ-201\/\",\"project\":\"\",\"license\":\"cc-by\",\"license_terms\":\"\"}]","CANDELA_OUTCOMES_GUID":"","pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-383","chapter","type-chapter","status-publish","hentry"],"part":372,"_links":{"self":[{"href":"https:\/\/courses.lumenlearning.com\/atd-herkimer-developmentalpsych\/wp-json\/pressbooks\/v2\/chapters\/383","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/courses.lumenlearning.com\/atd-herkimer-developmentalpsych\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/courses.lumenlearning.com\/atd-herkimer-developmentalpsych\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/atd-herkimer-developmentalpsych\/wp-json\/wp\/v2\/users\/74"}],"version-history":[{"count":7,"href":"https:\/\/courses.lumenlearning.com\/atd-herkimer-developmentalpsych\/wp-json\/pressbooks\/v2\/chapters\/383\/revisions"}],"predecessor-version":[{"id":938,"href":"https:\/\/courses.lumenlearning.com\/atd-herkimer-developmentalpsych\/wp-json\/pressbooks\/v2\/chapters\/383\/revisions\/938"}],"part":[{"href":"https:\/\/courses.lumenlearning.com\/atd-herkimer-developmentalpsych\/wp-json\/pressbooks\/v2\/parts\/372"}],"metadata":[{"href":"https:\/\/courses.lumenlearning.com\/atd-herkimer-developmentalpsych\/wp-json\/pressbooks\/v2\/chapters\/383\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/courses.lumenlearning.com\/atd-herkimer-developmentalpsych\/wp-json\/wp\/v2\/media?parent=383"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/atd-herkimer-developmentalpsych\/wp-json\/pressbooks\/v2\/chapter-type?post=383"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/atd-herkimer-developmentalpsych\/wp-json\/wp\/v2\/contributor?post=383"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/atd-herkimer-developmentalpsych\/wp-json\/wp\/v2\/license?post=383"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}