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
oxidative stress theory
free radical formation causes mutated cells, causing cancer and aging. Importance of antioxidants, and phytochemicals
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
why is osteoporosis a young person's disease?
we only build bone until we're 30 and then it declines