Aspirin reported to reduce the incidence of Alzheimer's disease
Published 13 November 2007
Research has concluded that long-term use of non-steroidal anti-inflammatory drugs use may reduce the risk of Alzheimer's disease, but only provided such use occurs well before the onset of dementia.
More recent exposure seems to offer little protection.
For more information, see the Neurology website.
These drugs are not recommended for the prevention of Alzheimer's disease because they can have serious, sometimes fatal, side-effects.