introduction

introduction - Biology of Aging I What is Aging-The...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Biology of Aging I. What is Aging ? -The accumulation of changes in an organism over time. a. Biological Aging - physical structures and functions of the body a.i. ↓muscle mass a.ii. Hormonal ∆ b. Psychological Aging - affect the way people think c. Social Findings - how a person behaves c.i. how we act in society II. Basic Epidemiology a. US Population Trends a.i. Rapid increase in the number of people over 65+ a.i.1. 65-75: elderly a.i.2. 76-85: old a.i.3. 85+: very old a.ii. 2010 a.ii.1. 12-14% of the US population is considered elderly (65-75) a.iii. By 2030 a.iii.1. 20% of the US population will be considered elderly a.iii.2. Median age of the US population will be 40 a.iii.3. Social and economic considerations b. Life Span vs. Maximal Life Span b.i. Life expectancy- refers to an average length of life within a population (ex: the US) b.ii. Life span- refers to how long a particular individual lives b.iii. Maximal life span- refers to the longest period that an individual of a particular species has lived *hasn’t changed in Humans over time ≈122 yrs c. Life Expectancy (US) c.i. 2007: c.i.1. Females ≈80 c.i.2. Males ≈76 c.ii. 1907: ≈47 c.iii. 10,007 BC: ≈35 c.iv. 2107 AD: ≈?? **Men are more prone to cardiovascular disease in 40s and 50s. Women do not develop these problems until later on **Men do stupid things ( high risk behaviors ) d. Major Causes of Death in 1907 in All Age Groups d.i. Infectious disease (by far #1) d.ii. Heart disease d.iii. Cancer d.iv. Stroke e. Major Causes of Death in 2007 in All Age Groups (US)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
e.i. Heart disease e.ii. Cancer e.iii. Stroke e.iv. Pulmonary disease e.v. Infectious disease e.vi. Diabetes e.vii. Kidney disease **more age driven opposed to infection diseases f. What has Changed? f.i. Antibiotics f.ii. Vaccines f.iii. Lower infant mortalities f.iv. Public health regulations (food, water, sewage, treatment) f.v. Personal hygiene improvements f.vi. Medical advances III. Theories of Aging -no magic Bullet as to why we age -multifactorial processes with parts of many of these theories contributing to the process of aging a. Programmed Theory - Neuroendocrine a.i. Chronometer that stops ticking (biological clock) a.ii. Aging is inherited –not result of wear and tear a.iii. Programmed a.iv. Max life span has not changed much; therefore time dependent
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 6

introduction - Biology of Aging I What is Aging-The...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online