Science

Stronger flu shot linked to nearly 55% lower Alzheimer's risk

Researchers at UTHealth Houston analyzed nearly 200,000 adults ages 65 and older and found that those who received a high-dose influenza vaccine had a nearly 55% lower risk of developing Alzheimer's, compared with a 40% reduction previously associated with the standard-dose vaccine.

✦ Extractive summary — built from the sources' own reporting•From 1 source•1 min read•Updated November 8, 2026, 2:52 AM UTC

A surprising new study suggests that a stronger flu shot could offer older adults significantly greater protection against Alzheimer's disease.

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