Alzheimer’s disease, the most common form of dementia, affects many people in their later years, but scientists have discovered a simple and effective way to reduce the risk of developing the disease.
We constantly hear about the benefits of good sleep. From a boost in productivity for the whole day to improved psychological and physical health, the reasons seem to be endless. And it seems that we can add another significant benefit to this growing list. A good night’s sleep can also play a crucial role in preventing memory loss associated with Alzheimer’s disease.
In a recent study, a team of researchers from several US universities followed 62 older adults who were known for their high mental performance. They found that those with early brain changes associated with Alzheimer’s disease tended to perform better on memory tests if they slept better and better. In the scientific world, this is called the deep sleep phase.
This was not influenced by other factors such as education, physical activity, or social connections, which are generally considered to be protective against memory decline in old age. People with mild brain changes characteristic of Alzheimer’s disease showed no significant differences in memory performance, regardless of how well they slept.
Matthew Walker, a neuroscientist at the University of California, Berkeley, and senior author of the study, called deep sleep a potential “life raft” for memory. What is also encouraging about the results of this study is that it appears that we can improve our sleep patterns regardless of age.
Previous studies have shown that sleep disorders may be associated with the accumulation of certain proteins in the brain, which is often seen in patients with Alzheimer’s disease. This accumulation can affect deep sleep and memory. However, the cause-and-effect relationship between sleep and these proteins is not yet fully understood.
It is also important to note that although these proteins are markers of Alzheimer’s disease, their presence alone does not guarantee the development of the disease. Some people with high levels of these proteins do not develop the disease. To find out why, Walker and his colleagues measured the sleep levels of the study participants and then tested their memory. They found that deep sleep, in particular, provides cognitive growth in those with higher levels of these same proteins.
An important takeaway from this study is that sleep may be something we can regulate on our own to potentially reduce our risk of developing Alzheimer’s disease. Quality sleep not only gives the brain a break, but also allows it to cleanse itself of harmful compounds. Moreover, this method of preventive control of potential diseases is available to everyone, regardless of age or social status.
Zsofia Zavech, one of the study’s authors, noted that while some people may show early signs of Alzheimer’s progression, certain lifestyle factors, including quality sleep, can serve as a buffer.
Finally, while sleeping pills may seem like a simple solution to some, they may not be the ideal option. Some evidence suggests that they do not promote deep sleep, which is beneficial for memory. Instead, it is more beneficial to follow natural sleep-promoting habits, such as reducing caffeine intake in the evening, exercising, limiting time spent with gadget screens, and perhaps making it a habit to take a warm shower before bed.
