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Study Links Blood Transfusions to Amyloid-Beta Seed Risk

8/25/2026

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Summary

Story summary

John Collinge, UK neurologist, warns blood transfusions could transmit amyloid-beta linked to Alzheimer’s.
A 2023 Scandinavian study of over 1 million linked donor hemorrhage to recipients’ later brain bleeds, suggesting amyloid-beta seed transmission.
Researchers urge large-scale epidemiology and blood-biomarker screening to assess transmission risk.
Susan Kohlhaas of Alzheimer’s Research UK says more research is needed to identify at-risk groups.

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Story summary

John Collinge, UK neurologist, warns blood transfusions could transmit amyloid-beta linked to Alzheimer’s.
A 2023 Scandinavian study of over 1 million linked donor hemorrhage to recipients’ later brain bleeds, suggesting amyloid-beta seed transmission.
Researchers urge large-scale epidemiology and blood-biomarker screening to assess transmission risk.
Susan Kohlhaas of Alzheimer’s Research UK says more research is needed to identify at-risk groups.