If your mother had Alzheimer's disease, you may be predisposed to brain changes that can lead to dementia, a new study suggests. Researchers say those brain changes appear to be linked to the body's ability to metabolize sugar, and the genes responsible for those changes are passed down from the mother. Experts stress that this does not mean you're destined to develop Alzheimer's simply because your mother had it. But controlling related health concerns such as high cholesterol, blood pressure,...