We're still searching for a root cause of Alzheimer's disease, but scientists are learning more and more about the risk factors involved: old age, primarily, but also genetics, diet, sleep quality, and even pollution in the air we breathe.
An analysis of over 100 studies indicates a possible link between exposure to ionizing radiation and mechanisms associated with Alzheimer's disease. However, researchers say that most data come from exposures that are much higher than those commonly encountered.