[Skip to Content]
Access to paid content on this site is currently suspended due to excessive activity being detected from your IP address Please contact the publisher to request reinstatement.
[Skip to Content Landing]
Sept 11, 1967


JAMA. 1967;201(11):25-36. doi:10.1001/jama.1967.03130110005003

This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables.


The Causes And Mechanisms Of Aging Come Under Increasing Investigation  More questions than ever before are being asked about the nature of changes with age. And, says Nathan W. Shock, PhD, interest is strong in devising a variety of experiments to find out how these changes are coming about.Posing one of the questions, Leroy E. Duncan, Jr., MD, asks:"Just what are the causes and mechanisms of the aging processes that lead to the deterioration of the organism and its eventual death?"This is an area of intrinsic fascination, a poorly understood area.... But it is one that may one day have a great impact on medical practice."Drs. Shock and Duncan—the former in Baltimore, the latter in Bethesda—play key roles in the gerontology program of the National Institute of Child Health and Human Development."NICHD now has an extramural grant program, an extramural training program, and an