The latest study supporting this idea recently appeared in the journal Neurology. Researchers looked at 800 Swedish women whose average age was 47 and followed them over more than four decades to reach their conclusion. The participants were asked about their mental activities, which included intellectual activities like writing and reading, artistic activities like singing in a choir or attending concerts, religious activities, club activities and manual activities like gardening and needlework.
They were scored in each area based on how often they participated in the type of activity in question, with the scale ranging from 0 for no to low activity to 2 for high activity. Their total possible score was 10 points (2 for each of the five areas). They were then divided into two groups: one for low mental activity (a score of 0 to 2) and another for high mental activity (a score of 3 to 10).
Their physical activities were also assessed. An inactive group did not engage in physical activity, while the active one did at least four hours per week of light physical activity like biking, walking, bowling or gardening, with some doing intense exercise or even competitive sports.
At the end of the study, the researchers discovered that the women with high mental activities levels had a 46 percent lower likelihood of developing Alzheimer’s and a 34 percent lower likelihood of developing dementia when compared to the women with low mental activity levels. That’s a nice reduction, but when it came to physical activity, those in the active group had a 52 percent lower likelihood of developing dementia with cerebrovascular disease and a 56 percent lower likelihood of developing dementia when compared to the inactive group.
The study does have a few limitations to keep in mind, however. First of all, the participants’ mental and physical activity were only assessed at the start of the study, and these levels could have changed throughout the years. It’s also worth noting that all of the participants were white Swedish women. Although it would make sense that other groups might note similar benefits, we can’t say for sure based on this study alone.
Nevertheless, there are some important takeaways here. First, as you might have expected, participating in mental activities does indeed protect you from developing Alzheimer’s and dementia. However, physical activity appears to offer even greater protection, so people should make an effort to stay active as they age to protect their brain.
Keep in mind that it only took a minimum of four hours per week to be considered active, which is roughly 35 minutes per day. This is something that most people can manage, even if it does require some creativity on your part. For example, you might be able to incorporate this into your daily routine by parking a few blocks away from work and walking there each day, going up and down the steps in your office building at lunch, or walking laps around the field while your children have sports practice after school.
The Alzheimer’s Society of the U.K. points out that regular physical exercise is one of the best of all the lifestyle changes studied when it comes to reducing your dementia risk. They cite studies such as one in which 2,000 Welsh men were followed over the course of 35 years. Among the five behaviors studied (exercising regularly, controlling alcohol intake, sticking to a healthy diet, avoiding smoking, and maintaining a healthy body weight), it was exercise that had the biggest impact on their dementia risk.
Exercise has a protective effect against Alzheimer’s as well as a range of other ailments, such as cardiovascular disease and diabetes. It’s incredible to think that such a simple and accessible activity can do so much for your health. If you’re not already active on a regular basis, start today!
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