Abstract
In this study a widely debated association between 2D:4D digit ratio and age was investigated. The study material included 960 individuals (530 females and 430 males) from Central Poland aged between 6–79 years. The information about age was obtained via survey filled in by study participants or, if underaged, their parents. The direct measurements of the second and fourth finger were performed to assess the 2D:4D digit ratio. The 2D:4D digit ratios for the left hand were significantly correlated with age both among females and males. In women the 2D:4D digit ratios for the right hand were significantly correlated with age. There were also significant differences in digit ratio between age groups. The results of our study suggest that there might be an association between digit ratio and age, and the direction of the correlation might be related to the phase of the ontogenesis.
Publisher
Uniwersytet Lodzki (University of Lodz)
Subject
Anthropology,Health (social science)
Reference27 articles.
1. Brown WM, Finn CJ, Breedlove SM. 2022. Sexual dimorphism in digit-length ratios of laboratory mice. Anat Rec 267:231–234. https://doi.org/10.1002/ar.10108
2. Butovskaya M, Burkova V, Apalkova Y. et al. 2021. Sex, population origin, age and average digit length as predictors of digit ratio in three large world populations. Sci Rep 11:8157. https://doi.org/10.1038/s41598-021-87394-6
3. de Sanctis V, Soliman AT, Elsedfy H, Soliman N, Elalaily R, Di Maio S. Is the Second to Fourth Digit Ratio (2D:4D) a Biomarker of Sex-Steroids Activity? 2017. Pediatr Endocrinol Rev 14(4):378–386. https://doi.org/10.17458/per.vol14.2017.SSE.SexSteroids
4. Guo J, Wu C, Zhang J, Li W, Lv S, Lu D, Qi X, Feng C, Liang W, Chang X, Zhang Y, Xu H, Cao Y, Wang G, Zhou Z. 2020. Prenatal exposure to multiple phenolic compounds, fetal reproductive hormones, and the second to fourth digit ratio of children aged 10 years in a prospective birth cohort. Chemosphere 263:127877. https://doi.org/10.1016/j.chemosphere.2020.127877
5. Hönekopp J, Bartholdt L, Beier L, Liebert A. 2007. Second to fourth digit length ratio (2D:4D) and adult sex hormone levels: new data and a meta-analytic review. Psychoneuroendocrinology 32:313–321 https://doi.org/10.1016/j.psyneuen.2007.01.007