UNSPECIFIED. (2001) Ageing: definitions, mechanisms and the magnitude of the problem. BEST PRACTICE & RESEARCH IN CLINICAL GASTROENTEROLOGY, 15 (6). pp. 835-849. ISSN 1521-6918

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Abstract

All multi-cellular organisms undergo change with time. Conception heralds the onset of growth and development, leading to reproductive competence and propagation of the species. With time, organisms age, leading to death as a final end-point. Whilst our knowledge and definitions of growth and reproduction are firmly established, the concept of ageing remains less well understood. One of the reasons for the lack of a singular definition of ageing is that it can be considered in many different ways, according to social, behavioural, physiological, morphological, cellular and molecular changes. Research has led to a number of theories being proposed that may explain the ageing process. In this chapter, we will review some of these theories and address some of the following fundamental questions: What is ageing? How can ageing be measured? When does ageing begin? When is an organism defined as old?.

Item Type:	Journal Article
Subjects:	R Medicine > RC Internal medicine
Journal or Publication Title:	BEST PRACTICE & RESEARCH IN CLINICAL GASTROENTEROLOGY
Publisher:	BAILLIERE TINDALL
ISSN:	1521-6918
Date:	December 2001
Volume:	15
Number:	6
Number of Pages:	15
Page Range:	pp. 835-849
Identification Number:	10.1053/bega.2001.0244
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/11289

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