Story perspectives

Study Links Grandparent Age to Autism Risk in Grandchildren

4/8/2026

Summary

Story summary

Researchers analyzed California birth records from 2001 to 2019 and found maternal grandparent age correlates with autism diagnoses in grandchildren, with nearly 28,000 cases among over 1.7 million mother-child pairs.
The association varies by race: White grandparents show a U-shaped pattern, while Hispanic and Asian Pacific Islander families display different patterns.
Limitations include reliance on birth records and lack of data on paternal grandparents; researchers call for broader social-context research.

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Story summary

Researchers analyzed California birth records from 2001 to 2019 and found maternal grandparent age correlates with autism diagnoses in grandchildren, with nearly 28,000 cases among over 1.7 million mother-child pairs.
The association varies by race: White grandparents show a U-shaped pattern, while Hispanic and Asian Pacific Islander families display different patterns.
Limitations include reliance on birth records and lack of data on paternal grandparents; researchers call for broader social-context research.