Margaret Thatcher's dementia: Cause of death or unrelated factor?

Dr. Liana Apostolova, an Associate Clinical Professor of Neurology and a member of the Mary S. Easton Center for Alzheimer's Disease Research, was quoted in the April 9 Los Angeles Times about the death of Margaret Thatcher and the fact that Alzheimer's disease can make the brain's blood vessels more brittle, raising the risk that they could burst and cause a hemorrhagic stroke.