It is often assumed that a main reason for current widespread infertility and low
fertility rates in Western countries is that couples postpone family formation [
[1]
]. However, we have previously shown that more than a century ago high average maternal
age was not a limiting factor for achieving total fertility rates way above replacement
level [
[2]
]. So, is the age when initiating childbearing the limiting factor? In this study
we utilize unique historical data from Danish archives to assess average age at first
childbirth in the mid-1800s where fertility was high.To read this article in full you will need to make a payment
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References
- Demographic and medical consequences of the postponement of parenthood.Hum Reprod Update. 2012; 18: 29-43
- Temporal trends in fertility rates: a nationwide registry based study from 1901 to 2014.PLoS One. 2015; : 10
- Statistikbanken.dk.2017 ([Accessed Mai 15, 2019])www.statistikbanken.dk
- Temporal trends in sperm count : a systematic review and meta-regression analysis.Hum Reprod Update. 2017; : 1-14
- Male reproductive disorders and fertility trends: influences of environment and genetic susceptibility.Physiol Rev. 2016; 96: 55-97
Article info
Publication history
Published online: September 09, 2019
Received:
June 14,
2019
Identification
Copyright
© 2019 Elsevier B.V. All rights reserved.
