Science

How Multiple Births Can Accelerate A Mother’s Biological Age

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Briefings

A 2026 Harvard Medical School review analyzed biological aging data from multiple studies to determine if pregnancy accelerates or slows biological age. The study found that while pregnancy speeds up the biological clock, postpartum recovery causes it to slow down again. This finding suggests a temporary acceleration during the pregnancy period, which may impact how mothers perceive their own aging process.

Key points

• Pregnancy accelerates biological aging as measured by epigenetic clocks and wearable devices.
• Postpartum recovery causes the biological clock to slow down after childbirth.

Context

This research resolves conflicting literature on whether child-bearing benefits or harms longevity, using wearable devices, blood tests, and brain imaging to measure biological age across diverse populations.

Limitations

Data spans a single year period with snapshot limitations; specific participant demographics are not detailed; no causal claims are made about long-term health outcomes.

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