Review: maternal biological ageing and telomere attrition across parity, pregnancy and postpartum
This review links pregnancy, higher parity and postpartum stress with telomere and epigenetic markers of maternal biological ageing, describing temporary and cumulative costs; it is an abstract of a review, not new data. [1]
Automatic summary · not editorially reviewed
The key findings
Pregnancy is described as a transient state of accelerated biological ageing, with epigenetic clocks showing a temporary increase in biological age only partially reversible postpartum. [1]
Higher parity was associated with shorter telomere length, with a cumulative effect most apparent in later life and around the menopausal transition. [1]
Poor sleep quality and postpartum depression were consistently linked to accelerated telomere attrition and epigenetic ageing, with emerging evidence of a bidirectional relationship. [1]
The source at a glance
- Study type / format
- Review (abstract only)
- Population / context
- Mothers and maternal populations across pregnancy, the postpartum period and reproductive history
- Summary based on
- Study abstract
- Original publication
- August 10, 2026
Pregnancy as a transient ageing state
The review describes pregnancy as a period of substantial metabolic, hormonal and immunological demand, increasingly conceptualised as a transient state of accelerated biological ageing. Telomere shortening was not consistently detectable during gestation, while epigenetic clocks indicated a temporary increase in biological age that was only partially reversible postpartum. These are biomarker observations, not evidence of lasting harm or of a causal mechanism.
Supporting source [1]
Parity and telomere length over the life course
Across the life course, higher parity was associated with shorter telomere length, with evidence suggesting a cumulative effect most apparent in later life and around the menopausal transition. The review calls this relationship heterogeneous and modified by factors including age at last birth, breastfeeding and socioeconomic context. These are associations; the abstract does not establish that pregnancy causes shorter telomeres.
Supporting source [1]
Postpartum sleep, depression and telomere dynamics
The postpartum period is described as a critical and underexplored window in which sleep deprivation, psychological stress and social factors converge to influence telomere dynamics. Poor sleep quality and postpartum depression were consistently linked to accelerated telomere attrition and epigenetic ageing, with emerging evidence of a bidirectional relationship whereby shorter telomere length may also predispose to postpartum depression. The review highlights incorporating postpartum sleep and mental health support into life-course models of ageing and calls for longitudinal, mechanistic and intervention-focused research.
Supporting source [1]
How to interpret this
This is an abstract of a review; the full text was not reviewed. The abstract reports no study design details, sample sizes, follow-up or effect estimates, and the described relationships are associations, not causes.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Collopy L, Kolenichenko Y. · europepmc.org · August 10, 2026