Apr 11, 2024 - News

More Mass. babies being born to moms in their 30s

Share of Massachusetts babies born to mothers in select age&nbspgroups
Data: CDC Wonder; Chart: Erin Davis/Axios Visuals

68% of Massachusetts babies born in 2023 had birth mothers in their 30s and older, while 30% of babies were born to mothers over 35, according to provisional CDC data.

Why it matters: In the last few years, age 35 has gone from the start of "geriatric pregnancy," to potentially a maternal-age sweet spot.

By the numbers: Today, 31.53 is the average age of a woman giving birth in Massachusetts, the second highest in the country next to Washington, D.C.

  • Regions with higher income and education levels "are correlated with increased advanced maternal age," partly because women there are deliberately delaying pregnancy for economic reasons, says Jane van Dis, OB-GYN and assistant professor at the University of Rochester.

The intrigue: 35-year-olds received more prenatal monitoring and had a small decrease in prenatal mortality compared even to those a few months younger, according to a 2021 JAMA Health Forum study.

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