Men with prostate cancer who take androgen-lowering medication may have a raised risk of dementia, a new study found.

Despite past concerns, a new study found no link between a type of chemotherapy and cognitive decline in breast cancer survivors.

Alzheimer's disease is the most common type of dementia. Alzheimer's is not a normal part of aging, although it typically develops in later adulthood. Research is ongoing to find causes and cures for Alzheimer's, including links between Alzheimer's and other diseases. 

Could this dream come true? A medication that's currently approved for one disease could make Alzheimer's disease nothing more than a nightmarish memory.