Low Blood Pressure Associated with Increased Alzheimer’s Risk, Study Shows

A large observational study of nearly 800,000 adults in the United Kingdom and the United States found that individuals with chronic low blood pressure had a markedly higher likelihood of being diagnosed with Alzheimer’s disease. In the UK cohort, low blood pressure was linked to roughly three times the risk, while in the US cohort the risk was about double compared with participants with normal blood pressure levels.

Researchers suggest that insufficient cerebral perfusion may underlie the association, as the brain requires a steady supply of blood, oxygen, and nutrients. The study does not establish a causal relationship, and the authors caution that low blood pressure may be a marker of other underlying processes rather than a direct cause of neurodegeneration. Further investigations are needed to clarify whether low blood pressure is an independent risk factor or reflects other health conditions.

The findings add to ongoing discussions about optimal blood‑pressure management across the lifespan and may influence future guidelines on cardiovascular and cognitive health.