I've written about the potential link between insomnia and Alzheimer's disease a few times now.
As for why there may be a link, the jury is still out.
Researchers in France and Canada found that those over the age of 66 who used benzodiazepines for at least 3 months were up to 51% more likely to develop Alzheimer's.
The strongest link was found in those who took benzodiazepines for longer periods of time and those who took longer-acting benzodiazepines.
It's important to note that this study didn't conclude that benzodiazepines cause Alzheimer's disease - however, the link does suggest a possible connection that is worthy of future investigation.
Source: British Medical Journal
Last updated: January 12, 2015