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

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