Alzheimer’s disease starts with small, almost imperceptible steps. And then it builds. Sometimes slowly over a period of decades, other times more quickly—in just a matter of years. But no matter the speed of progression, the end outcome is always the same. The sixth leading cause of death in the United State, Alzheimer’s develops as … Continue reading What was Old is New Again: Scientists Transplant Brain Cells into Aged Mice and Reverse Memory Loss