NEARLY HALF OF DEMENTIA CASES MAY BE PREVENTABLE A new study out of Lund University throws a spotlight on something many of us would rather not think about: dementia, and how our daily choices might shape our odds of ending up with it. The surprising part? Nearly half of dementia cases may be tied to risks you can actually change. The research tracked almost 500 people in their mid-sixties — all of them showing no signs of memory trouble at the start. Over four years, scientists watched for changes inside their brains, zeroing in on damage linked to vascular dementia and Alzheimer’s disease, the two biggest causes of cognitive decline. So what does this mean for you? Well, the usual suspects are back in the spotlight: smoking, high blood pressure, heart disease, and high cholesterol. Each of these was strongly linked to damage in the brain’s white matter — the network of nerve fibers that keeps everything running smoothly. In short, those habits don’t just mess with your heart; t...