There is so much we can do from a lifestyle perspective to help safeguard our brains against declining function. And certainly getting a good night’s sleep is one of the most important choices a person can make to help preserve and protect this vital organ. In October 2020, I wrote a piece on the relationship between sleep duration and cognitive decline, and it was based on a very large study performed in England. This study demonstrated that there was risk for cognitive decline with not enough sleep as well as too much sleep. And it concluded that between 7 to 8 hours of sleep each night is the “sweet spot” in terms of being related to the least risk for cognitive decline.
This week, a new study published in the journal Nature Communications entitled “Association of sleep duration in middle and old age with incidence of dementia” reviewed data from close to 8,000 participants over a 25-year period of time. They demonstrated that there was higher risk for developing dementia with sleep duration of six hours or less at specific ages of 50, 60, and 70 years. The findings of the study showed the risk for actually developing dementia was increased by 30% in all three age categories. To be sure, these findings were independent of sociodemographic, behavioral, cardiometabolic, and mental health factors.
Interestingly, in contrast to the study I quoted last year, these researchers did not find strong evidence that longer sleep duration is associated with dementia risk. In fact, there were very few individuals in the study who actually experienced long sleep duration so this was difficult to evaluate. Continue reading
There has certainly been a lot of information appearing in scientific literature as of late indicating that coffee consumption is good for the brain. One recent report has revealed what I believe to be a very specific mechanism that directly relates the consumption of coffee to the well-established reduction in risk for Alzheimer’s disease (AD). Continue reading
It’s an all-too-common scenario. Too many restless nights resulting in a visit to the doctor where you confess that you’re “not sleeping well.” In many cases, this results in your doctor writing a prescription for a sleep drug.
However, the problem is that the depth and restorative nature of the sleep you get on sleep drugs is not on par with good, natural sleep. Specifically, the deeper stages of sleep are interrupted by these drugs which can have profound effects on brain function.
So what can you do to improve sleep? Continue reading
I, like many of you, have often wondered about the notion of drinking a cup of coffee after the evening meal. People often say things like, “I can’t drink coffee after 4PM or I won’t be able to sleep,” and this seems to make sense. Others, like myself, can enjoy a coffee after dinner seemingly without any consequences, as far as sleep is concerned.
To help shed some light on this issue, researchers publishing in the Journal of Clinical Sleep Medicine recently reported the results of study in which individuals consumed 400mg of caffeine 0, 3, or 6 hours prior to their normal bedtime. These folks were compared to a similar group of people who received a placebo. Sleep was measured by self-reporting as well as through the use of a portable sleep monitor. Continue reading
A lot of times I’m asked about the impact of caffeine consumption on ketosis. Does it help? Hurt? A new study out of Canada seeks to answer this question.