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Dr Steve Allder, consultant neurologist at Re:Cognition Health shared his insight recent study published in Neurology, the journal of the American Academy of Neurology, about a concerning link between excessive daytime sleepiness and the risk of cognitive decline in older adults.
The research found that older adults who struggle with significant sleep disturbances, such as feeling excessively tired during the day or lacking interest in daily activities, may be at greater risk for a pre-dementia condition known as motoric cognitive risk syndrome (MCR). This finding underscores the importance of sleep health in ageing populations and raises questions about how sleep issues earlier in life could impact long-term cognitive wellbeing.
What is Motoric Cognitive Risk Syndrome?
Motoric Cognitive Risk (MCR) syndrome is a condition characterised by slower walking speeds coupled with mild memory problems, though not severe enough to be classified as dementia. In the study, it was noted that individuals over 65 who reported being “poor sleepers”, experiencing consistent daytime drowsiness and a decline in enthusiasm for daily activities, were more likely to show symptoms of MCR. Although the study did not establish a direct cause-and-effect relationship between poor sleep and MCR, the connection was significant enough to prompt calls for further research.
The Implications for Younger Adults
The study’s findings aren’t only relevant to older adults. It suggests that sleep issues in middle age, if left unaddressed, might have long-term consequences for cognitive health. While younger people may not be at immediate risk for dementia, chronic sleep problems over time can lead to other health concerns, such as cardiovascular disease or chronic inflammation, which are known contributors to cognitive decline. Addressing sleep disturbances early in life, therefore, is crucial for maintaining brain health in later years.
Understanding Sleep Problems vs. Normal Ageing Fatigue
It’s important to distinguish between typical age-related fatigue and the more severe sleep disturbances seen in those at risk for cognitive decline. In older adults, occasional tiredness or a nap after a busy day is common. However, the study identifies “sleep issues” as persistent, excessive tiredness and a noticeable disinterest in activities, symptoms that go beyond the normal weariness expected in older age. If someone is regularly falling asleep during the day, or seems disengaged from daily life, it may be a sign of a more serious issue and should be evaluated by a healthcare professional.
Preparing for Healthy Ageing: Sleep in Middle Age
Good sleep hygiene is key to reducing the risk of future cognitive issues. People in middle age can set themselves up for better sleep quality later in life by adopting healthy habits now. This includes maintaining a regular exercise routine, eating a balanced diet rich in nutrients and practicing effective stress management techniques. Creating a calming bedtime routine, sticking to a consistent sleep schedule and ensuring a comfortable, screen-free sleeping environment can also contribute to better sleep. Addressing sleep-related problems like insomnia or sleep apnea early can help lower the risk of cognitive issues as one ages.
The Role of Exercise and Diet in Sleep Quality
While the study doesn’t directly examine the link between exercise, diet and sleep quality in older adults, it’s well-established that both play a crucial role in promoting good sleep. Physical activity helps regulate sleep patterns and can improve overall sleep quality, while a diet rich in fruits, vegetables, and whole grains supports brain health and helps maintain steady sleep cycles. For individuals in their 70s, a mix of moderate exercise such as walking, gentle stretching, or light resistance training and 7-8 hours of sleep each night is ideal for supporting both physical and cognitive health.
Prioritising Sleep for Long-Term Health
This study highlights the significance of recognising sleep disturbances as a potential early indicator of cognitive decline. While more research is needed to fully understand the connection between sleep and conditions like MCR, the findings emphasise the need to take sleep health seriously at any age. For those in middle age, adopting healthy sleep habits now could make all the difference in ensuring a sharper, more vibrant life in later years.
To read the full article visit: https://www.medicalnewstoday.com/articles/sleepy-during-daytime-pre-dementia-cognitive-decline-symptoms
