Week 1 Flashcards
How many people are over 65? What percent of the population?
44.7 million, 14%
By what year is it projected that those over 65 will outnumber those under 18?
2033
What is causing the increase in life expectancy?
- advanced health care
- improved infectious disease control
- advances in infant/child care
- improvement in nutrition and sanitation
What were the top 5 leading causes of death in persons over 65 in 1980?
1) heart disease
2) malignant neoplasm
3) cerebrovascular
4) pneumonia and flu
5) COPD
What were the top 5 leading causes of death in persons over 65 in 2013?
1) heart disease
2) malignant neoplasm
3) chronic lower respiratory
4) cerebrovascular
5) alzheimer’s
What are basic actions difficulties?
Captures at least one limitation in movement, emotional, sensory or cognitive functioning
What are complex activity limitations?
A limitation in at least one selected social role, such as living independently or working
Hayflick Limit Theory
Limited amount of cell population doublings, average being 50 per life of the cell
Evolutionary Theory of Aging
An expansion of natural selection and states that each successive generation is more resistant to mutations and when mutations occur, they occur at a later age
Stress Theory
Survival into old age is enhanced by high vitality and resilience due to an underlying resistance to stress by the genes
Neuroendocrine Theory
Functional decrements in neurons and their associated hormones are central to the aging process
Theory of Intrinsic Mutagenesis
Each species has specific characteristics of its genes that regulate the rate of errors, thereby affecting the life span.
Immunological Theory
The functional capacity of the immune system declines with age as a result of reduced T-cell function.
Free Radical Theory
Aging changes are due to damage caused by free radicals.
Caloric Restriction Theory
A life committed to a high-nutrient and low-calorie diet is beneficial and longer.
Error Theory of Aging
Any accident or error in either the machinery or the process of making proteins would cascade in multiple effects that would be incompatible with proper function and life.
Redundant DNA Theory
Biological age changes are a result of errors accumulating in genes. An accumulation of these takes over the system until it is exhausted.
Somatic Mutation Theory
Mutations or genetic damage result from radiation and these accumulate and create functional failure and death.
Transcription Theory
A control mechanism responsible for the appearance and the sequence of aging exists in the nuclear chromatin complex.
Cross-Linkage Theory
The large reactive proteins such as collagen cross-link and are responsible for aging.
Sleeping and Aging
Prolonged sleep loss effects homeostasis and the species’ ability to repair tissue.