NTD309 - The Elderly
what subsection of old people is the fastest growing?
average number of years of life remaining for persons in a population cohort or group; most commonly reported as life expectancy from birth
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
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?