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Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
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Climate change, uncertainty and allostatic load.

D E Crews1,2, N C Kawa1, J H Cohen1

  • 1a Department of Anthropology , The Ohio State University , Columbus , OH , USA.

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|February 22, 2019
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Summary
This summary is machine-generated.

Global Climate Change (GCC) intensifies environmental and social stressors, increasing the risk of lifelong elevated allostatic load. This occurs through amplified stress, insecurity, and migration, impacting human health across generations.

Keywords:
Food insecurityclimate migrationsocial instabilitystressorswater insecurity

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Area of Science:

  • Environmental Health
  • Human Physiology
  • Climate Science

Background:

  • Human physiological stability is challenged by environmental stressors.
  • Allostasis is the neuroendocrine system for stress response, maintaining somatic optima.
  • Chronic stress leads to physiological dysregulation, termed allostatic load, which increases with age.

Purpose of the Study:

  • To review pathways linking Global Climate Change (GCC) to increased allostatic load.
  • To examine how GCC exacerbates environmental and social stressors.
  • To predict the population-level health impacts of GCC.

Main Methods:

  • Review of published literature.
  • Analysis of primary ethnographic case studies.
  • Examination of climate-related stressors, social instability, food/water insecurity, and migration.

Main Results:

  • GCC multiplies environmental and social stressors, increasing allostatic load.
  • Early life exposure to GCC-related social insecurity has significant lifetime impacts.
  • Food and water insecurity, and migration driven by GCC, elevate allostatic load.

Conclusions:

  • Global Climate Change (GCC) accentuates environmental and sociocultural stressors.
  • Populations exposed to GCC face a higher likelihood of lifelong elevated allostatic load.
  • Intergenerational effects, including historical trauma and epigenetics, may perpetuate allostatic load.