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Related Experiment Video

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SA-β-Galactosidase-Based Screening Assay for the Identification of Senotherapeutic Drugs

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Adaptive senectitude: the prolongevity effects of aging.

David G Le Couteur¹, Stephen J Simpson

¹Centre for Education and Research on Ageing, Concord RG Hospital, University of Sydney, Hospital Road, Concord, NSW 2139, Australia. david.lecouteur@sydney.edu.au

The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences

|October 13, 2010

Summary

Aging changes may not all be bad. Some, like high blood pressure or obesity, might actually improve longevity in older adults, suggesting new health targets.

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Area of Science:

Gerontology
Evolutionary Biology
Biomedical Science

Background:

Traditionally, aging is viewed as a process of decline, with associated medical changes considered detrimental.
Interventions aim to prevent or treat these changes to extend healthspan and lifespan.

Purpose of the Study:

To challenge the assumption that all age-related changes are negative.
To explore the possibility that some aging characteristics may be adaptive evolutionary mechanisms for longevity.

Main Methods:

Review of epidemiological data and clinical trials in older human populations.
Analysis of outcomes associated with conditions like hypertension, obesity, and metabolic syndrome in the elderly.

Main Results:

Evidence suggests some traditionally negative aging markers (hypertension, obesity, metabolic syndrome) correlate with better outcomes in the very old.
Certain supplements (antioxidants, hormones) have shown increased mortality in some studies.

Conclusions:

The concept of 'adaptive senectitude' or reverse antagonistic pleiotropy is proposed.
Common aging changes might be evolutionary adaptations to enhance longevity and offer new therapeutic targets for healthy aging.