An Evolutionary Perspective on Sedentary Behavior

John R Speakman* (Corresponding Author)

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Most people are aware of the health benefits of being physically active. The question arises then why people so easily fall into sedentary habits. The idea developed here is that sedentary behavior is part of a suite of behaviors to reduce levels of physical activity that were strongly selected in the evolutionary past, likely because high levels of physical activity had direct negative consequences for survival. However, hunter-gatherer populations could not reduce activity indefinitely because of the need to be active to hunt for, and gather food. Hence they never experienced low levels of activity that are damaging to health, and no corresponding mechanism avoiding low activity evolved. Consequently, gene variants promoting efficiency of activity and increased sedentariness were never selected against. Modern society facilitates reduced activity by providing many options to become less active and divorcing food intake from the need to be active. Choosing the less active option is hard wired in the genes; this explains why being sedentary is so common, and why reversing it is so difficult. Incentivizing activity may be enabled using modern technology, but ultimately may only end up replacing one set of health issues with others. Also see the video abstract here https://youtu.be/ekHbUwPw-v4.

Original languageEnglish
Article number1900156
JournalBioEssays
Volume42
Issue number1
Early online date12 Dec 2019
DOIs
Publication statusPublished - Jan 2020

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Keywords

  • evolution
  • genetics
  • internet of things
  • physical inactivity
  • sedentary behaviour
  • smart technology

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