Commonly used drugs for problems like colds, allergies, depression, high blood pressure and heart disease have long been linked to cognitive impairment and dementia. Now researchers have some fresh evidence that may help explain the connection.
The drugs, known as anticholinergics, stop a chemical called acetylcholine from working properly in the nervous system. By doing so, they can relieve unpleasant gastrointestinal, respiratory or urinary symptoms, for example.
The list of such drugs is long. Among them: Benadryl for allergies, the antidepressant Paxil and the antipsychotic Zyprexa, Dimetapp for colds and the sleep aid Unisom.
In the new analysis, researchers looked . . .