The last few decades have seen uptick in published research on the link between sleeplessness, dementia and Alzheimer's, but a longitudinal study has confirmed some positive news for one group of people.
The new study confirmed the link between Alzheimer's and insomnia, but showed that individuals who are able to go back to sleep after waking up at night or in the morning (known as sleep-maintenance insomnia) have a 40 per cent decreased dementia risk.
Sleep-initiation insomnia was associated with a 51 per cent increased dementia risk, according to the results, while sleep medication usage causes a 30 per cent increased dementia risk.
