Chapter 3 The Social Consequences of Physical Aging THEORIES OF AGING ... • Anti-Aging Compounds . PHYSIOLOGICAL CHANGES WITH AGE

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  • CHAPTER 3

    THE SOCIAL CONSEQUENCES OF

    PHYSICAL AGING

  • BIOLOGICAL THEORIES OF AGING

    Wear and Tear Theory states that aging occurs because of the

    system simply wearing out over time

    Autoimmune Theory hypothesis that aging is a function of the bodys immune system becomes

    defective, producing antibodies

    against itself

  • BIOLOGICAL THEORIES OF AGING II

    Cross-linkage Theory focuses on the changes in the

    protein called collagen with age

  • BIOLOGICAL THEORIES OF AGING III

    Free-radical Theory a special case of the cross linkage

    theory of aging that posits that free

    radicals produce DNA mutations

  • BIOLOGICAL THEORIES OF AGING IV

    Cellular Aging Theory the hypothesis that aging occurs as cells slow

    their number of replications

  • BIOLOGICAL THEORIES OF AGING V

    Endocrine and Immunological

    decline in progesterone and estrogen partial cause

    for chronic illnesses, decreased muscle mass and

    strength

    loss of T-cells reduces ability to fight infection

  • CAN AGING BE REVERSED OR DELAYED?

    Growth Hormones

    Caloric

    Restrictions

    Anti-Aging

    Compounds

  • PHYSIOLOGICAL CHANGES WITH AGE

    Body Composition Both men and women experience a loss of muscle

    mass and water, and an increase of fat tissue

    Skin Skin loses its elasticity and thickness

    Hair Hair becomes thinner and more gray

  • ORGAN SYSTEMS

    Musculoskeletal and kinesthetic

    system

    Respiratory system

    Cardiovascular system

    Urinary system

    Gastrointestinal system

    Endocrine system

    Nervous system

  • AGING IN ORGAN SYSTEMS

  • EFFECT OF AGE ON SYSTOLIC BLOOD

    PRESSURE

  • SLEEP PATTERNS

    Up to 40 percent of older adults report sleep

    difficulties

    Older adults may compensate by taking naps

    Disorders of sleep that can occur with age include:

    respiratory problems, sleep apnea, and restless

    leg syndrome

  • VISION AND HEARING

    Vision Vision problems increase with age

    i.e. glaucoma, cataract, age-related macular degeneration

    Hearing Age-related hearing may lead to adaptations and compensation

    Otosclerosis, presbycusis, &

    tinnitus

  • THE EYE

  • THE EAR

  • TASTE AND SMELL

    Taste The taste function of older people does not undergo a general decline

    in strength, but demonstrates specific changes

    Smell Age differences exist in the appreciation of smells

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