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Published on: December 2, 2015
Allostasis and allostatic load: expanding the discourse on stress and cardiovascular disease
Jeongok G Logan1, Debra J Barksdale
1School of Nursing, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7460, USA. gang@email.unc.edu
Insights
Allostasis and allostatic load explain how the body adapts to stress. Enhancing resilience through allostasis strategies can improve health outcomes and combat chronic illness.
Area of Science:
- Physiology
- Stress Response
- Health Outcomes
Background:
- Traditional stress models inadequately explain the link between stress and chronic illness.
- Allostasis, extending homeostasis, describes physiological adaptation to stressors.
- Allostatic load represents chronic maladaptation leading to pathology.
Purpose of the Study:
- Introduce allostasis and allostatic load concepts.
- Explore their application in clinical interventions.
- Enhance resilience for improved health outcomes.
Main Methods:
- Discursive paper reviewing allostasis and allostatic load.
- Theoretical model application.
- Biomarker measurement of allostatic load.
Main Results:
- Allostatic load, measurable by biomarkers, correlates with poorer health.
- Higher allostatic load is linked to increased risk of chronic illness.
- Resilience signifies successful allostasis.
Conclusions:
- Allostasis theory provides a framework for understanding stress adaptation.
- Clinical strategies combining allostasis and resilience can mitigate chronic stress effects.
- Evidence-based practice requires managing stress and enhancing resilience.
Aim:
The aim of this discursive paper is to introduce allostasis and allostatic load, which are relatively new concepts proposed to explain physiological responses to stress, and to suggest ways in which allostasis theory can be applied to the development of clinical interventions to increase resilience for producing better health outcome.
Background:
Common explanations of stress have failed adequately to explicate its association with health and chronic illness. Allostasis is the extension of the concept of homeostasis and represents the adaptation process of the complex physiological system to physical, psychosocial and environmental challenges or stress. Allostatic load is the long-term result of failed adaptation or allostasis, resulting in pathology and chronic illness.
Discussion:
The concepts of allostasis and allostatic load introduced the idea that external challenges initiate allostasis and chronic stress causes allostatic load that can be measured with multiple biomarkers. Finding from several studies suggests that higher allostatic load is associated with worse health outcomes. Resilience represents successful allostasis and strategies can be implemented to enhance resilience and thereby improve health outcomes.
Conclusions:
This theoretical model provides a comprehensive explanation of the human body's adaptation processes in response to stress and the results of failed adaptation over time. In addition, combining the concepts of allostasis and resilience may help us to understand and implement clinical strategies better to reduce or prevent the debilitating physiological and psychological effects of chronic stress and chronic illness.
Relevance To Clinical Practice:
Clinical practice should be based on a solid theoretical foundation to improve health outcomes. Strategies to manage stress and increase resilience along with clinical interventions to manage the physiological responses to chronic stress are necessary to assist in preventing and controlling the detrimental effects of chronic disease on human life.
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