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Updated: Jun 26, 2026

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Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling
Published on: July 4, 2007
[Sensible family planning: pitfalls and dilemmas]
E R te Velde1, J M W M Merkus, F E van Leeuwen
1Voortplantingsgeneeskunde, Utrecht. e.r.tevelde@wanadoo.nl
Nederlands Tijdschrift Voor Geneeskunde
|December 24, 2008
Summary
Delaying childbirth past 30 increases risks for infertility and breast cancer. For optimal family planning and child health, it is advisable for women to conceive their first child around age 30 or sooner.
Area of Science:
- Reproductive medicine
- Oncology
- Maternal-fetal medicine
Context:
- A previous article suggested maternal ages 25-35 are optimal for first-time childbirth.
- It concluded risks after 35 are acceptable, even at 40.
Purpose:
- To challenge the previous article's conclusions regarding the safety of delayed childbearing.
- To present evidence on the increased risks associated with postponing pregnancy.
Summary:
- Postponing pregnancy beyond age 30 elevates risks of infertility and breast cancer.
- Later-age motherhood correlates with increased obstetrical complications, miscarriage, and adverse child outcomes.
- The study advises couples to consider earlier conception, ideally around age 30 or before, for families planning multiple children.
Impact:
- Informs couples about the risks of late parenthood for informed family planning decisions.
- Highlights the need for accurate health information regarding maternal age and reproductive outcomes.
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