File:Average Luteal Progesterone by Age at UK Migration.jpg

Average Luteal Progesterone Profiles by Categories of Age at Migration to the UK

Unadjusted mean luteal progesterone index values. Mean ± SEM: 44.3 ± 8.6 pg/ml (ages 0–8 y, n = 22); 31.8 ± 6.8 pg/ml (ages 9 y to menarche, n = 17); 24.6 ± 2.5 pg/ml (postmenarche, n = 46).

Ovulation dates were estimated from oestradiol data available for the same individual menstrual cycles [22]. Confidence intervals are omitted for visual clarity. Sample sizes include all women for which hormonal data were available and may differ from total sample size for other aspects of data collection.

"This research demonstrates that human females use an extended period of the life cycle prior to reproductive maturation to monitor their environment and to modulate reproductive steroid levels in accordance with projected conditions they might encounter as adults. Given the prolonged investment of human pregnancy and lactation, such plasticity (extending beyond any intrauterine programming) enables a more flexible and finely tuned adjustment to the potential constraints or opportunities of the later adult environment. This research is the first, to our knowledge, to demonstrate a postuterine developmental component to variation in reproductive steroid levels in women."

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Reference

Núñez-de la Mora A, Chatterton RT, Choudhury OA, Napolitano DA & Bentley GR. (2007). Childhood conditions influence adult progesterone levels. PLoS Med. , 4, e167. PMID: 17503960 DOI.

Copyright

© 2007 Núñez-de la Mora et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Cite this page: Hill, M.A. (2024, April 26) Embryology Average Luteal Progesterone by Age at UK Migration.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Average_Luteal_Progesterone_by_Age_at_UK_Migration.jpg

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