FSN 301 Lecture Notes - Lecture 4: Food Policy, Basal Metabolic Rate, World Health Organization
2 Jan 2018
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Document Summary
Nutrition and older adults chapter 18 and 19. There is no one age that defines old . 60- world health organization: u. s. census bureau uses: Food matters: nutrition contributes to long & healthy life: cumulative effects of lifelong dietary habits determine nutritional status in old age, cdc suggest that longevity depends on: 51% lifestyle factors (besides not smoking, a healthy diet & ample exercise contribute most to longevity) Theories of aging: aging theory tries to explain physical and mental changes that accompany aging, programmed aging, hayflick"s theory of limited cell replication, molecular clock theory. Free-radical or oxidative stress theory: rate-of-living theory. Lean body mass (lbm: sum of fat-free tissues, mineral as bone, and water. Fat-free mass decreases about 15% from age 30 to 80: sarcopenia- age associated loss of skeletal muscle mass and function, older people have lower mineral, muscle, and water reserves, gain of body fat. 24 pounds less muscle and 22 pounds more fat.
