By Paul Matzdorff. Price, 13.50 marks. Pp. 248. Dietrich D. Steinkopff Verlagsbuchhandlung, Einbaumstrasse 2, Frankfurt am Main-Griesheim, Germany, 1948.
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The book is divided into a general and a special part. The general part deals with primary aging and is concerned with the processes which are associated regularly with the advance of biologic time and which fall on the descending part of life's curve. Old age is recognized as that period in which deficiencies in these processes become noticeable. The somatic changes, anatomic and functional, furnish valuable information, as well as do the mental changes. The beginning of aging in human beings varies, depending on the point of view. If the social value of the person is contemplated, his efficiency in his calling and in other undertakings is decisive. If resistance to disease or the reaction to therapeutic measures is taken as a criterion, a different timing prevails. One of the great difficulties in judging primary aging is due to the fact that disease may change the "normal" course of
Grundlagen zur Erforschung des Alterns. Arch Intern Med (Chic). 1950;86(2):313–314. doi:10.1001/archinte.1950.00230140149015
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