People who carry a greater number of gene variants associated with elevated pulse pressure have a small but measurable increase in the risk of dementia being listed as a contributing cause of death, according to research published June 3, 2026, in Neurology, the medical journal of the American Academy of Neurology.
Pulse pressure is the gap between the two numbers in a blood pressure reading - systolic minus diastolic. It reflects the force the heart generates when it contracts, and a wide gap is a signal of poor cardiovascular health, such as stiffened arteries or a heart valve that is not working well. The study looked not at measured blood pressure but at the genetic variants that predispose a person toward higher pulse pressure in the first place.
That distinction is what makes the finding interesting. Cardiometabolic conditions including high blood pressure, diabetes and stroke are already known to raise dementia risk, but it has been unclear whether the genetic drivers behind those conditions carry their own influence. The strongest common genetic risk factor for Alzheimer's disease remains the APOE e4 allele, yet the researchers note that some people inherit a collection of small-effect variants tied to cardiometabolic disease that may add to their risk as well.
The study establishes an association, not cause and effect. Carrying variants linked to higher pulse pressure does not mean those variants cause dementia-related death, and the increase in risk identified was small. The work points toward vascular genetics as a line of inquiry that sits alongside, rather than replaces, the well-established APOE story.