Researchers examined data from individuals in Sweden ages 50 and older and found that those with depression had a more than fifteenfold increased likelihood of developing dementia during the first six months post-diagnosis, compared with those without depression, and although the increased risk of dementia waned, it was still present after two decades. The findings in PLOS Medicine also showed that among siblings, those with depression had more than 20 times increased odds of dementia in the first six months post-diagnosis, compared with a sibling who did not have a depression diagnosis, and the increase in risk also declined but remained evident after more than two decades.
Dementia appears more likely in adults with depression
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