How A High-Dose Flu Vaccine Could Cut Alzheimer’s Risk

Send us Fan MailWe follow a surprising chain of evidence suggesting the high-dose flu vaccine for adults over 65 is linked to about a 55% lower risk of developing Alzheimer’s disease. We break down how researchers used real-world pharmacy shortages to get closer to causation, then explore the leading theories connecting vaccines, inflammation, and long-term brain health. • why a routine vaccine could look like a neurological breakthrough • the 2022 flu shot finding and the healthy vaccine effect bias • how supply shortages created a natural experiment on dosage • immunosenescence and why high-dose flu shots exist after 65 • the 200,000-person claims-data analysis and the 55% vs 40% gap • dose dependency as a clue that biology is driving the effect • sex differences in immune response and why women may benefit more • microglia, neuroinflammation, and the blood-brain barrier link • immune training and heterologous effects beyond flu prevention • shingles, Tdap, and pneumococcal vaccines as part of a cognitive shield • limitations of claims data, short follow-up, and why RCTs are hard here • what better future studies could measure with biomarkers and PET scans This podcast is created by Ai for educational and entertainment purposes only and does not constitute professional medical or health advice. Please talk to your healthcare team for medical advice. Never miss an episode—subscribe on your favorite podcast app!