One recent line of research suggests that frequent stress may even boost the risk for Alzheimer’s disease. A new study headed by scientists at the University of California at San Diego showed that repeated stress triggered brain changes in mice that were similar to the abnormal clumps of protein seen in the brains of Alzheimer’s patients. The changes were most pronounced in the hippocampus. In humans, this part of the brain plays a key role in memory and is hard hit by Alzheimer’s disease. For people with Alzheimer’s Disease and other Dementias music, especially familiar songs, unlocks memories; participation in music improves communication, overcomes withdrawal. For people with Parkinson’s Disease and other movement disorders, moving to music helps improve, balance and range of motion.