The "Baby Bust": awareness of the gap between desired and actual family size and review of practical options
- PMID: 40946960
- DOI: 10.1016/j.fertnstert.2025.09.012
The "Baby Bust": awareness of the gap between desired and actual family size and review of practical options
Abstract
Decreasing birth rates are a worldwide phenomenon with potentially alarming consequences. This decline results either from women choosing not to have children or from couples ending up with a smaller family size than initially intended, a phenomenon called the fertility gap. In the latter case, delaying parenthood plays a key role in not achieving the desired reproductive objective. This review will examine age-related fertility decline, couple awareness, and factors contributing to the postponement of parenthood. We will also review potential strategies to prevent fertility gaps in couples wishing to conceive and how family values can be revived. Efforts to assess current levels of fertility awareness and identify ways to improve this knowledge will be highlighted. We will critically evaluate measures implemented worldwide for enhancing fertility and explore their relative effectiveness on the basis of reported experience. Finally, we will analyze potential signs of fertility rebounds, some of which may already be emerging, and critically assess possible means to amplify these effects.
Keywords: Fertility awareness; age-related fertility decline; depopulation; fertility gap.
Copyright © 2025 American Society for Reproductive Medicine. Published by Elsevier Inc. All rights reserved.
Conflict of interest statement
Declaration of Interests D.D.Z. has nothing to disclose. N.B. is an employee of Merck, Darmstadt. S.S. has nothing to disclose. J.P.T. has nothing to disclose.
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