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Bioessays. 2020 Jan;42(1):e1900156. doi: 10.1002/bies.201900156. Epub 2019 Dec 12.

An Evolutionary Perspective on Sedentary Behavior.

Author information

1
State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, 100100, China.
2
Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen, Scotland, AB24 2TZ, UK.
3
CAS Center of Excellence in Animal Evolution and Genetics, Kunming Institute of Zoology, Kunming, Yunnan province, China.

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.

KEYWORDS:

evolution; genetics; internet of things; physical inactivity; sedentary behavior; smart technology

PMID:
31830309
DOI:
10.1002/bies.201900156

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