Alzheimer's is the most common form of dementia, defined by declines in memory and other thinking abilities.
"For a long time, we didn't even know inflammation was important, a key factor in the evolution of Alzheimer's disease," said Town. "Now [this paper suggests that] we can start to think more broadly; maybe it's inflammation in the blood or the skin that might be important factors."
Although the study found an association between certain non-melanoma skin cancers and lower risk of Alzheimer's, it did not prove a cause-and-effect relationship.
Learn more about skin cancer from the U.S. National Cancer Institute.
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