Symptoms of depression that steadily increase over time in older age could indicate early signs of dementia, scientists have said.
Other patterns of symptoms, such as chronic depression, appear not to be linked, a study found.
Dutch researchers looked at different ways depression in older adults progressed over time and how this related to any risk.
They concluded worsening depression may signal the condition is taking hold.
The research, published in The Lancet Psychiatry, followed more than 3,000 adults aged 55 and over living in the Netherlands see more >> http://www.bbc.com/news/health-36170259
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