05/10/2026
Could fertility patterns be passed from one generation to the next? 🧬💗
Fascinating new research published in Fertility and Sterility has explored whether the time it takes parents to conceive (time to pregnancy) may be associated with the future fertility of their children.
The study found that sons whose parents took more than 12 months to conceive had a higher risk of infertility later in life. For daughters, a longer parental time to pregnancy — 7–12 months and particularly more than 12 months — was also associated with a higher risk of infertility, with evidence of a dose-response relationship.
These findings raise an important possibility: lower fertility may have an intergenerational component.
This does not mean that children of parents who experienced difficulty conceiving will necessarily experience infertility themselves. Fertility is complex and influenced by many genetic, biological, environmental and lifestyle factors. Rather, research like this helps us understand fertility across generations and may ultimately support more personalised reproductive healthcare.
At London Fertility Clinic, we believe that understanding your reproductive health is an important part of planning for the future. Whether you are considering a fertility assessment, trying to conceive, exploring IVF or simply want to understand your fertility better, our team is here to provide evidence-based, individualised care.
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Source: Stokholm MV, Ernst A, et al. Intergenerational fecundity and infertility: A cohort study. Fertility and Sterility. October 2026.