By: Dr. Keith Darrow, PhD, CCC-A
Mop the Floor, Do the Dishes and Prevent Dementia!
In recent years, three significant long-term studies have shed light on the nuanced relationship between exercise and dementia risk, dispelling uncertainties and providing valuable insights. While experts have long believed in the protective effects of exercise against dementia, these studies, involving thousands of participants, have offered clarity on the types, intensities, and durations of physical activity that play a pivotal role in decreasing the risk of developing dementia. If you want to develop a personalized health plan, visit www.PreventingDecline.com to learn more.
One study (published in the journal Neurology) followed over a half-million people without dementia in the UK Biobank database. This study, conducted over 11 years, examined various physical activities, including sports, climbing stairs, walking, and even household chores. Unlike previous studies, the specificity of the British questionnaires allowed a detailed understanding of the participants' engagement in different activities.
Surprisingly, the study revealed that regular, vigorous activity, such as playing sports or working out, reduced the risk of developing dementia by 35%. Equally notable was the finding that individuals regularly performing household chores also experienced a significant benefit, with a 21% lower risk. This challenges the notion that exercise must be traditional, highlighting the effectiveness of even non-traditional activities.
A second paper (also published in Neurology), analyzed nearly 40 peer-reviewed scientific studies over the past 10-20 years, to explore leisure activities associated with a reduced risk of dementia. The diverse range of activities included walking, running, swimming, dancing, participating in sports, and gym workouts. Participants engaging in regular exercise showed a 17% lower risk of developing dementia compared to those who did not. The authors emphasized that dementia prevention is not confined to one specific activity, encouraging individuals to choose activities they enjoy.
Finally, a third study that followed more than 1,200 children for over 30 years, revealed that higher levels of fitness in childhood yields higher cognitive functioning in midlife. Thus, it is critical that we educate younger generations on the importance of regular physical activity for sustained brain health.
Combined, these reports reinforce the idea that regular, lifelong physical activity, in various forms, significantly contributes to reducing the risk of dementia. And remember, this does not mean you have to become a gym rat. Physical exercise, including house chores, are all great ways to keep your body moving and your brain fit. As a general rule, people should aim to reach ~150 minutes (2.5 hours) of moderate- to high-intensity exercise each week.
Importantly, these studies challenge the misconception that a family history of dementia automatically predisposes individuals to a higher risk. Most scientists agree that nearly 4 in 10 cases of dementia are attributed to lifestyle - thus, dementia may be preventable in 40% of cases. The association between physical activity and reduced dementia risk extends even to those with a family history of the condition, providing a positive message that individuals can use exercise to actively mitigate their risk.
In conclusion, the research underscores the cumulative impact of daily physical activity on brain health over time. Whether it's engaging in traditional exercises or incorporating non-traditional activities like household chores, the key is to find activities that resonate with individual preferences. These studies collectively emphasize that a holistic approach to physical activity, tailored to individual choices, is a powerful tool in the ongoing battle against dementia. Your brain, an integral part of your body, stands to benefit from any activity that promotes general health, highlighting the enduring connection between physical activity and cognitive well-being.