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Does the sex of one’s co-twin affect height and BMI in adulthood? A study of dizygotic adult twins from 31 cohorts

Overview of attention for article published in Biology of Sex Differences, April 2017
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  • Good Attention Score compared to outputs of the same age (68th percentile)

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11 tweeters


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Does the sex of one’s co-twin affect height and BMI in adulthood? A study of dizygotic adult twins from 31 cohorts
Published in
Biology of Sex Differences, April 2017
DOI 10.1186/s13293-017-0134-x
Pubmed ID

Leonie H. Bogl, Aline Jelenkovic, Eero Vuoksimaa, Linda Ahrenfeldt, Kirsi H. Pietiläinen, Maria A. Stazi, Corrado Fagnani, Cristina D’Ippolito, Yoon-Mi Hur, Hoe-Uk Jeong, Judy L. Silberg, Lindon J. Eaves, Hermine H. Maes, Gombojav Bayasgalan, Danshiitsoodol Narandalai, Tessa L. Cutler, Christian Kandler, Kerry L. Jang, Kaare Christensen, Axel Skytthe, Kirsten O. Kyvik, Wendy Cozen, Amie E. Hwang, Thomas M. Mack, Catherine A. Derom, Robert F. Vlietinck, Tracy L. Nelson, Keith E. Whitfield, Robin P. Corley, Brooke M. Huibregtse, Tom A. McAdams, Thalia C. Eley, Alice M. Gregory, Robert F. Krueger, Matt McGue, Shandell Pahlen, Gonneke Willemsen, Meike Bartels, Toos C. E. M. van Beijsterveldt, Zengchang Pang, Qihua Tan, Dongfeng Zhang, Nicholas G. Martin, Sarah E. Medland, Grant W. Montgomery, Jacob v. B. Hjelmborg, Esther Rebato, Gary E. Swan, Ruth Krasnow, Andreas Busjahn, Paul Lichtenstein, Sevgi Y. Öncel, Fazil Aliev, Laura A. Baker, Catherine Tuvblad, Sisira H. Siribaddana, Matthew Hotopf, Athula Sumathipala, Fruhling Rijsdijk, Patrik K. E. Magnusson, Nancy L. Pedersen, Anna K. Dahl Aslan, Juan R. Ordoñana, Juan F. Sánchez-Romera, Lucia Colodro-Conde, Glen E. Duncan, Dedra Buchwald, Adam D. Tarnoki, David L. Tarnoki, Yoshie Yokoyama, John L. Hopper, Ruth J. F. Loos, Dorret I. Boomsma, Thorkild I. A. Sørensen, Karri Silventoinen, Jaakko Kaprio


The comparison of traits in twins from opposite-sex (OS) and same-sex (SS) dizygotic twin pairs is considered a proxy measure of prenatal hormone exposure. To examine possible prenatal hormonal influences on anthropometric traits, we compared mean height, body mass index (BMI), and the prevalence of being overweight or obese between men and women from OS and SS dizygotic twin pairs. The data were derived from the COllaborative project of Development of Anthropometrical measures in Twins (CODATwins) database, and included 68,494 SS and 53,808 OS dizygotic twin individuals above the age of 20 years from 31 twin cohorts representing 19 countries. Zygosity was determined by questionnaires or DNA genotyping depending on the study. Multiple regression and logistic regression models adjusted for cohort, age, and birth year with the twin type as a predictor were carried out to compare height and BMI in twins from OS pairs with those from SS pairs and to calculate the adjusted odds ratios and 95% confidence intervals for being overweight or obese. OS females were, on average, 0.31 cm (95% confidence interval (CI) 0.20, 0.41) taller than SS females. OS males were also, on average, taller than SS males, but this difference was only 0.14 cm (95% CI 0.02, 0.27). Mean BMI and the prevalence of overweight or obesity did not differ between males and females from SS and OS twin pairs. The statistically significant differences between OS and SS twins for height were small and appeared to reflect our large sample size rather than meaningful differences of public health relevance. We found no evidence to support the hypothesis that prenatal hormonal exposure or postnatal socialization (i.e., having grown up with a twin of the opposite sex) has a major impact on height and BMI in adulthood.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 91 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Finland 1 1%
Unknown 90 99%

Demographic breakdown

Readers by professional status Count As %
Researcher 10 11%
Student > Bachelor 10 11%
Student > Master 9 10%
Professor 7 8%
Student > Doctoral Student 7 8%
Other 21 23%
Unknown 27 30%
Readers by discipline Count As %
Medicine and Dentistry 14 15%
Nursing and Health Professions 11 12%
Business, Management and Accounting 5 5%
Biochemistry, Genetics and Molecular Biology 5 5%
Social Sciences 5 5%
Other 16 18%
Unknown 35 38%

Attention Score in Context

This research output has an Altmetric Attention Score of 5. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 24 April 2022.
All research outputs
of 21,262,134 outputs
Outputs from Biology of Sex Differences
of 416 outputs
Outputs of similar age
of 281,995 outputs
Outputs of similar age from Biology of Sex Differences
of 1 outputs
Altmetric has tracked 21,262,134 research outputs across all sources so far. This one has received more attention than most of these and is in the 73rd percentile.
So far Altmetric has tracked 416 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 20.0. This one has gotten more attention than average, scoring higher than 56% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 281,995 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 68% of its contemporaries.
We're also able to compare this research output to 1 others from the same source and published within six weeks on either side of this one. This one has scored higher than all of them