We might find a large number of people in the rather ridiculous position of taking what we call pro-cholinergic medication to counteract anti-cholinergic drugs they are already taking.

What we showed is that many of the people who are classified in this way have it due to the medication they are taking, and not because they have early Alzheimer's disease.

The cholinergic system consists of neurotransmitters that regulate a lot of our mental functioning, particularly related to memory.