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New Blood Biomarker Could Predict Dementia Risk Early

3/28/2026

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Summary

Story summary

Researchers at the University of California, San Diego identified phosphorylated tau 217 (p-tau217) as a blood biomarker that may predict dementia before symptoms.
The study in JAMA Network Open analyzed data from 2,766 women aged 65 to 79 and found higher p-tau217 linked to dementia risk.
Additional research is required to assess routine care potential and the influence of hormone therapy and genetics on dementia risk.

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Story summary

Researchers at the University of California, San Diego identified phosphorylated tau 217 (p-tau217) as a blood biomarker that may predict dementia before symptoms.
The study in JAMA Network Open analyzed data from 2,766 women aged 65 to 79 and found higher p-tau217 linked to dementia risk.
Additional research is required to assess routine care potential and the influence of hormone therapy and genetics on dementia risk.