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Study: Older Moms Linked to Fewer Childhood Allergies

1/20/2026

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Summary

Story summary

A study by researchers in Japan and the United States finds that mothers aged 35 and older have children less likely to develop certain allergic conditions in early childhood.
The analysis used data from nearly 35,000 children and showed lower rates of food allergies, wheezing, and dust mite sensitivity.
However, researchers caution that older maternal age is not universally protective and call for further research.

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Story summary

A study by researchers in Japan and the United States finds that mothers aged 35 and older have children less likely to develop certain allergic conditions in early childhood.
The analysis used data from nearly 35,000 children and showed lower rates of food allergies, wheezing, and dust mite sensitivity.
However, researchers caution that older maternal age is not universally protective and call for further research.