"So there is an overlap relationship that makes it very difficult to look at the more interesting question of whether, if we treat depression, could we prevent dementia," Kennedy said.
Even though the clinical implications for the association between depression and dementia aren't clear, Kennedy believes that older people with depression should have their depression treated. "There's even more reason to make sure depression is aggressively treated," he said.
More information
For more on Alzheimer's disease, visit the Alzheimer's Association.
