For the millions living with diabetes — a condition that already doubles the risk of dementia — a large international study offers a measured but meaningful hope: the choices made in service of the heart may also serve the mind. Researchers analyzing data from over 41,000 UK participants and a separate American cohort found that better cardiovascular health, as measured by the American Heart Association's Life's Essential 8 framework, was associated with meaningfully lower rates of early cognitive decline. The protection is real, but it is not absolute — genetics cast a long shadow, and those