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what subsection of old people is the fastest growing?

oldest old

young old

65-74

aged

75-84

oldest old

85+

life expectancy

average number of years of life remaining for persons in a population cohort or group; most commonly reported as life expectancy from birth

life span

maximum number of yrs someone might live; human life span is projected to range from 110 to 120 years

the theories on aging

programmed aging, oxidative stress, rate of living, calorie restriction

programmed aging theory

our cells can only replicate so many times

oxidative stress theory

free radical formation causes mutated cells, causing cancer and aging. Importance of antioxidants, and phytochemicals

rate of living theory

faster living increases metabolism, cellular turnover = faster aging

calorie restriction theory

restrict your calories by 30%, lose 10-20% body weight, and eat really nutrient dense foods

which factors of health can you control?

lifestyle, kind of environment, kind of access to good healthcare

which factors of health can't you control?

genetics, kind of environment, kind of access to good healthcare

factors that affect nutrition amongst older people

decreased GI motility, Cardiac Output, Blood volume, Kidney, liver and immune functions, Vitamin absorption, stomach secretions, lactase secretions, saliva production; increased blood pressure, body weight, bone loss

bone loss

the reduction of bone mass

what part of the bone is lost in oseteoporosis?

tribecular (inner, spongy layer)

what are the three most important aspects of health with old age?

strength, flexibility, balance

why is osteoporosis a young person's disease?

we only build bone until we're 30 and then it declines

why are steroids and high protein diets bad for bone health

they pull calcium from the bone

can you prevent bone loss?

not really

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