Faster life history strategy manifests itself by lower age at menarche, higher sexual desire, and earlier reproduction in people with worse health

Abstract Factors which indicate lower life expectancy also induce switching to a faster life strategy, that is, a higher investment in current reproduction at the expense of future reproduction and body maintenance. We tested a hypothesis according to which impairment of individual health serves as...

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Autores principales:	Kateřina Sýkorová, Jaroslav Flegr
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3909ff9d40804279a94be653b3bc2661
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spelling	oai:doaj.org-article:3909ff9d40804279a94be653b3bc26612021-12-02T16:53:10ZFaster life history strategy manifests itself by lower age at menarche, higher sexual desire, and earlier reproduction in people with worse health10.1038/s41598-021-90579-82045-2322https://doaj.org/article/3909ff9d40804279a94be653b3bc26612021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90579-8https://doaj.org/toc/2045-2322Abstract Factors which indicate lower life expectancy also induce switching to a faster life strategy, that is, a higher investment in current reproduction at the expense of future reproduction and body maintenance. We tested a hypothesis according to which impairment of individual health serves as a signal for switching to a faster life strategy using online-gathered data from 32,911 subjects. Worse health was associated with lower age at menarche and earlier initiation of sexual life in women and higher sexual desire and earlier reproduction in both sexes. Individuals with worse health also exhibited lower sexual activity, lower number of sexual partners, and lower total number of children. These results suggest that impaired health shifts individuals towards a faster life strategy but also has a negative (physiological) effect on behaviours related to sexual life. Signs of a faster life strategy were also found in Rh-negative men in good health, indicating that even just genetic predisposition to worse health could serve as a signal for switching to a faster life strategy. We suggest that improved public health in developed countries and the resulting shift to a slower life strategy could be the ultimate cause of the phenomenon of demographic transition.Kateřina SýkorováJaroslav FlegrNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-18 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kateřina Sýkorová Jaroslav Flegr Faster life history strategy manifests itself by lower age at menarche, higher sexual desire, and earlier reproduction in people with worse health
description	Abstract Factors which indicate lower life expectancy also induce switching to a faster life strategy, that is, a higher investment in current reproduction at the expense of future reproduction and body maintenance. We tested a hypothesis according to which impairment of individual health serves as a signal for switching to a faster life strategy using online-gathered data from 32,911 subjects. Worse health was associated with lower age at menarche and earlier initiation of sexual life in women and higher sexual desire and earlier reproduction in both sexes. Individuals with worse health also exhibited lower sexual activity, lower number of sexual partners, and lower total number of children. These results suggest that impaired health shifts individuals towards a faster life strategy but also has a negative (physiological) effect on behaviours related to sexual life. Signs of a faster life strategy were also found in Rh-negative men in good health, indicating that even just genetic predisposition to worse health could serve as a signal for switching to a faster life strategy. We suggest that improved public health in developed countries and the resulting shift to a slower life strategy could be the ultimate cause of the phenomenon of demographic transition.
format	article
author	Kateřina Sýkorová Jaroslav Flegr
author_facet	Kateřina Sýkorová Jaroslav Flegr
author_sort	Kateřina Sýkorová
title	Faster life history strategy manifests itself by lower age at menarche, higher sexual desire, and earlier reproduction in people with worse health
title_short	Faster life history strategy manifests itself by lower age at menarche, higher sexual desire, and earlier reproduction in people with worse health
title_full	Faster life history strategy manifests itself by lower age at menarche, higher sexual desire, and earlier reproduction in people with worse health
title_fullStr	Faster life history strategy manifests itself by lower age at menarche, higher sexual desire, and earlier reproduction in people with worse health
title_full_unstemmed	Faster life history strategy manifests itself by lower age at menarche, higher sexual desire, and earlier reproduction in people with worse health
title_sort	faster life history strategy manifests itself by lower age at menarche, higher sexual desire, and earlier reproduction in people with worse health
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/3909ff9d40804279a94be653b3bc2661
work_keys_str_mv	AT katerinasykorova fasterlifehistorystrategymanifestsitselfbylowerageatmenarchehighersexualdesireandearlierreproductioninpeoplewithworsehealth AT jaroslavflegr fasterlifehistorystrategymanifestsitselfbylowerageatmenarchehighersexualdesireandearlierreproductioninpeoplewithworsehealth
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Faster life history strategy manifests itself by lower age at menarche, higher sexual desire, and earlier reproduction in people with worse health

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