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Introduction

This chapter is not really about life extension. Instead, its focus is on health extension: keeping the body in a state of good health. This is a simpler topic, because we can ignore several philosophical questions. However, as the chapter unfolds, it will become clear that life extension is a natural consequence of health extension. As diseases are cured, causes of death will be avoided; as people make use of technology to improve their health, they will find themselves living longer--perhaps much longer.

A few thousand years ago, people lived about thirty years. From their point of view, we have already extended our lives to an amazing degree. However, from where we stand today, we can see that we still have a long way to go. Some people still die in their 40's from cancer, heart attack, stroke, and infections. This is tragic, and frustrating. Today's medicine is only somewhat able to deal with these and other conditions--and it has barely started to......

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Approximate Word Count: 9116
Approximate Pages: 37 (250 words per double-spaced page)

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