I've been taking benedryl to sleep for about a week . is it true benedryl causes dementia in the long term ? i've been taking it to get schedule back

Association is not..: ...Causation. The study you reference was a retrospective association of anticholinergic type medications like benedryl, equivalent for chronic use for THREE YEARS. The significant difficulty with these studies is that to assume there is causation is faulty. However, in general, any chronicity of treatments should be supervised by a health care provider. See your PCP.