Lecture 11: physical and cognitive development in late adulthood Flashcards
Ageing and Ageism
Ageism
• Treatment, stereotyping, discrimination because of someones age
• More stereotypes about old people than any other age group
- Older people also have ageist views
- See themselves more positively than their peers
• May impact on treatment recommendations and expected outcomes
Life Expectancy
- Maximum lifespan is about 120 years
- Increased life expectancy means that more people are approaching that limit
- Centenarians = .02% of population
• Super centenarians
- People 110 years+
- Average lifespan not expected to exceed 85
• Biological limitations
Theories of Ageing
Senescence
Programming theories
Senescence (deterioration with age) explained by:
Cellular theories:
- Wear and tear
- Genetic errors
Programming theories:
- Hayflick limit – 50 replications
- Death built-in
- Nothing can extend the lifespan
Physical Functioning
Primary ageing
Secondary ageing
Primary ageing – universal changes
Secondary ageing – effects of illness and disease
• Motor, sensory, intellectual slowing
- Primary ageing of CNS and PNS
- Can improve with training
- Skin, bone, and muscle changes
- Cardiovascular, respiratory and sensory systems change
Sensory Change
men lose their hearing more than women because they are exposed to more environmental hazards
Improving Health Behaviours in Late Adulthood
- sleeping an average of 7-8 hours nightly
- eating breakfast almost every day
- seldom, if ever, eating snacks
- controlling weight
- exercising regularly
- limiting alcohol consumption
- being a nonsmoker for life
Current Research: Australian Longitudinal Study of Ageing (ALSA)
- Australian Longitudinal Study of Ageing (Flinders University)
- Began 1992 with 2087 participants aged 70+ years in South Australia
- Aim: gain an understanding of how social, biomedical, and environmental factors are associated with age-related changes in health and wellbeing of elderly individuals
Chronic Illnesses: Cardiovascular Disease
Risk factors
Coronary heart disease, heart failure, stroke and peripheral vascular disease
Risk factors:
• Family history
• Smoking, poor diet, lack of exercise
- Personality type
- Stress
- Gender
Chronic Illnesses: Hypertension
Risk factors
• High blood pressure
- Systolic BP > 140
- Diastolic BP > 90
- Deterioration of arterial walls (continued high blood pressure)
- Arteriosclerosis
- Risks of heart attack, kidney damage, stroke
Risk factors
• Gender, genetics, obesity, poor diet, stress, personality characteristics
Chronic Illnesses: Cancer
Risk factors
• Uncontrolled cellular growth, dysfunction of DNA
- Malignant tumours
- Spread through metastasis
Risk factors:
- SES, genetics, gender, lifestyle, diet
- Life events, negative affect, personality, social support, isolation, stress
Chronic Illnesses: Arthritis
- Inflammation of joints and connective tissue
- Pain, stiffness, sometimes swelling
- Osteoarthritis
- Degenerative joint disease
- Rheumatoid arthritis
- Autoimmune reaction
- Affects whole body
- Stress makes condition worse
Mental Health Issues: Depression
Associates of depression
• Mental disorders underestimated and undertreated in older adults
- Stoicism limits reporting
- Most common disorder is depression
- May be mistaken for normal ageing
- Symptoms may mimic dementia
- Associates of depression
- Chronic health issues, functional impairment, social deprivation, medication
The Ageing Brain
Pseudodementia
Acute and Chronic brain syndromes
- Neuronal loss and growth
- Axon sprouting, dendrite branching, synaptogenesis (growth)
- neurofibrillary tangles, granulovacuolar degeneration (loss)
- Pseudodementia: mimic symptoms of dementia (depression etc)
- Brain syndromes:
- Acute: caused by e.g., diabetes, liver failure
- Chronic: e.g., multi-infarct dementia and Alzheimer’s disease
Multi-infarct Dementia
- Caused by vascular disease
- Risk factors include hypertension, diabetes mellitus, advanced age, being male and smoking
- Blockage of oxygen to brain causes tiny strokes
- Sudden rather than gradual onset
• May have periods of lucidity
Alzheimer’s Disease (AD)
- 50-60% of organic brain syndrome patients over 65 have AD
- Degeneration of brain cells affecting memory, learning, and judgement
- Symptoms worsen with disease progression
- Care in controlled environment
- Causes and cures not understood