If you’ve struggled with insomnia, you will know the frustration of not being able to fall asleep and you’re aware of the short-term impact it has on your brain’s ability to function. But did you know it has been linked to memory problems in later life?
A new study has been looking into the theory that there may be a link between chronic insomnia and dementia and found that the condition increases the risk of developing dementia by 40%.
The study
Several previous studies have found a link between insomnia and various health concerns – both physical conditions like obesity, type 2 diabetes and high blood pressure, and neurological ones like Alzheimer’s disease and dementia.
For this study, a team of researchers at Minnesota’s Mayo Clinic, set out to find out more about the link between insomnia and dementia.
The team recruited 2,750 adults with an average age of 70. No participants had any cognitive decline at the beginning of the study, and 16% suffered from chronic insomnia. They were tracked for 5.6 years on average, during which time they underwent cognitive function and memory tests, answered questions about their sleeping patters and had regular brain scans to check for markers of Alzheimer’s disease, including white matter hyperintensities and beta-amyloid plaques.
At the end of the study, it was found that those participants suffering from chronic insomnia were 40% more likely to develop dementia or cognitive impairment than their better-rested peers.
What does this mean for insomnia sufferers?
Firstly, it is always important to remember that correlation is not causation – just because there’s a link, that does not mean that insomnia causes dementia. But such a high-risk increase does warrant concern, and if you do have serious sleeping problems this is one more reason to do something about it.
Another key thing to note about this study is that the patients with increased risk of dementia had chronic insomnia, which is defined as having serious difficulty sleeping for three or more nights every week over a minimum period of three months.
What can be done to treat insomnia?
There are various insomnia treatments, and the right one for you will depend on which type of insomnia you suffer from – this could be sleep onset insomnia, where you struggle getting to sleep at the beginning of the night, or sleep maintenance insomnia, where you may not have a problem falling asleep at bedtime, but then wake up in the night and have difficulty getting back to sleep.
Or you might have terminal insomnia, which is when you wake up long before your alarm and can’t get back to sleep. Or any combination of the above! Importantly, sometimes insomnia occurs because of an existing medical condition, such as anxiety or depression, and this is known as comorbid insomnia. If this is the case for you, it’s a good idea to seek help for the underlying medical condition before treating the insomnia.
Insomnia treatments might involve Cognitive Behavioural Therapy (CBT), to help you control any negative thoughts that might be keeping you awake, or you might choose to go down a more hi-tech route, using one of the many sleep apps that are available to help you drift off using techniques such as guided meditations and sleep trackers.
If you’re struggling with insomnia and would like to speak to a medical expert about your concerns, please contact us to book an appointment today.
