Alzheimer’s: Just what is it? There may be more than one cause

Alzheimer's: Just what is it? There may be more than one cause
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Alzheimer?s disease may not even exist as a singular entity, any more than cancer. If that?s so, it would explain the massive and costly failures in treatment. But it also gives hope that, like cancer, an array of treatments may begin to defeat it.

This and other proposals to rethink Alzheimer?s…