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Demography of Dietary Restriction and Death in Drosophila
William Mair,1Patrick Goymer,1,2Scott D. Pletcher,1*Linda Partridge1
Dietary restriction (DR) increases life-span in organisms fromyeast to mammals, presumably by slowing the accumulation ofaging-related damage. Here we show that in Drosophila, DR extendslife-span entirely by reducing the short-term risk of death.Two days after the application of DR at any age for the firsttime, previously fully fed flies are no more likely to die thanflies of the same age that have been subjected to long-termDR. DR of mammals may also reduce short-term risk of death,and hence DR instigated at any age could generate a full reversalof mortality.
1 Department of Biology, University College London, Darwin Building, Gower Street, London WC1E 6BT, UK. 2 Natural Environment Research Council (NERC) Centre for Population Biology, Imperial College, London, Silwood Park Campus, Ascot, Berkshire SL5 7PY, UK.
* Present address: Department of Molecular and Human Geneticsand Huffington Center on Aging, Baylor College of Medicine,Houston, TX 77030, USA.
To whom correspondence should be addressed. E-mail: l.partridge{at}ucl.ac.uk
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In Science Magazine
LETTERS
Casandra L. Rauser, Laurence D. Mueller, Michael R. Rose;, William Mair, Patrick Goymer, Scott D. Pletcher, and Linda Partridge (12 March 2004) Science303 (5664), 1610c.
[DOI: 10.1126/science.303.5664.1610c] |Full Text »|PDF »
PERSPECTIVES
James W. Vaupel, James R. Carey, and Kaare Christensen (19 September 2003) Science301 (5640), 1679.
[DOI: 10.1126/science.1090529] |Summary »|Full Text »|PDF »
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