NTDT305 Lecture Notes - Lecture 18: United States Census Bureau, Skeletal Muscle, Telomere
20 Dec 2016
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Food & nutrition programs designed to support healthy aging. Us census bureau= young old, aged & oldest old (65>) Older american act nutrition program= 60 + 10% access to high quality health care. Alaska 9% are older adult (alaska= lowest %, florida= highest. Life expectancy= average # of years of life remaining for people. Life span= maximum # of years someone might live. **average life expectancy in us= 78. 4 years life expectancy has increased because od decreased infant death, improved infectious diseases, environmental reasons (clean water, immunization) Aging theory tries to explain physical and mental changes that accompany again. 2 perspectives of theories: programmed aging, wear & tear theories. 1) programmed aging: hayflick"s theory of limited cell replication (replicative senescence, modular clock theory. Telomeres are an essential part of cells that affect how our cell age (protect chromosomes) Loss of telomeres loss of chromosomal replication. **as we age we lose telomeres; eventually cells die.
