The earlier it's detected, the earlier treatment can start. A new study has found that the loss of smell could be an early warning sign of Alzheimer’s disease, and the timing of diagnosis could help at-risk patients receive more effective treatment. The research , conducted by DZNE and Ludwig-Maximilians-Universität München (LMU), found that Alzheimer’s can cause the brain’s immune cells, called microglia, to mistakenly target healthy nerve fibers in the brain that are crucial for smell. This