Severe cases of COVID-19 can injure the brain in ways that affect memory, thinking and mood for months after the infection is gone, new research hints. It may even raise the risk of Alzheimer's.

The No. 1 and 2 causes of death remain the same, but there have been a number of notable changes. And now there's a new disease to assess on the global landscape: COVID-19.

People who get more deep sleep appear less likely to develop Alzheimer's. That may be because this phase of sleep allows the brain to clear out waste products.

Viewers worldwide are responding to a moving video of Marta C. González, a former dancer afflicted with dementia. But critics are questioning whether González is who the clip makers claim she is.

Since 2016, journalist Yvonne Latty has been documenting her mother's journey with Alzheimer's. As part of a collaboration with Latino USA and Black Public Media, she brings us this intimate portrait.

In the late 19th Century, Lulu Hurst transfixed audiences as the "Georgia Wonder." An electrical storm supposedly gave the teenager supernatural powers...