Many of these belong to a class known as anticholinergic drugs, which affect a brain chemical called acetylcholine.
Why Can These Drugs Affect the Brain?
Acetylcholine plays a key role in brain functions such as:
Memory
Learning
Thinking ability
Anticholinergic medications reduce the activity of this chemical. Over long periods, this reduction may affect cognitive function and potentially increase the risk of memory decline.
What Do Studies Show?
Several large studies involving hundreds of thousands of patients have suggested that:
Long-term users of anticholinergic medications may have a higher risk of dementia.
Some research indicates the risk could rise 30–50% depending on dosage and duration.
Older adults appear to be more vulnerable to these potential effects.
However, researchers emphasize that these studies show an association, not definite proof that the medications directly cause dementia.
Should People Stop Taking These Medicines?
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