Currently, over 55 million people worldwide have dementia. According to Alzheimer’s Disease International, this number is expected to double within the next 20 years. By 2030, nearly 80 million people could be living with dementia.
This statistic, to say the least, is alarming, especially when considering that dementia has no cure. Once it develops, it can only be managed, not reversed.
However, there’s good news: while dementia cannot be cured, it can be prevented. And as the saying goes, “prevention is better than cure”.
And one of the ways that has been recommended to prevent dementia is exercise.
But can exercise really prevent dementia? Let’s explore what science says.
What Is Dementia?
Dementia is an umbrella term for a group of illnesses that affect cognitive abilities such as memory, reasoning, and thinking, interfering with an individual’s ability to perform daily activities.
Some common signs of dementia include:
•Memory loss.
•Difficulty identifying familiar objects or people.
•Personality or mood changes.
•Confusion about time or place.
•Trouble speaking or following conversations.
Dementia is most prevalent among adults aged 65 and older. Research suggests that 50% of people aged 85 and above have dementia. Although it is often associated with old age, studies reveal that people in their 30s and 40s can also develop it.
What Causes Dementia?
Several factors can contribute to the development of dementia. Some of the most common include:
•Alzheimer’s Disease: The most common cause of dementia, accounting for 60–80% of cases in older adults.
•Stroke: While not every stroke leads to dementia, it significantly increases the risk. Research shows that at least 1 in 4 people who have had a stroke would later on have signs of dementia.
•Brain Injury: Severe head trauma that damages the brain can result in dementia.
Can Exercise Prevent Dementia?
While dementia cannot be cured, evidence suggests it can be prevented, and exercise is one of the most effective preventive measures.
What Does the Research Say?
Numerous studies highlight the link between physical activity and reduced dementia risk:
1. A study found that older adults who exercised at moderate to high intensity had a 78% lower risk of developing dementia compared to inactive individuals.
2. Another study involving over 62,000 participants revealed that even light physical activity significantly reduced the likelihood of developing dementia compared to complete inactivity.
3. Regular exercise can reduce the risk of dementia by up to 40%.
Conversely, prolonged inactivity increases the risk of dementia. A study of 50,000 people discovered that those inactive for 10 or more hours daily were more likely to develop the condition.
How Does Exercise Prevent Dementia?
Exercise improves blood circulation, ensuring the brain receives sufficient oxygen and nutrients. This enhances cognitive function, supports memory retention, and promotes overall brain health.
Over time, these benefits reduce the likelihood of developing brain-related illnesses like dementia.
The Takeaway
If there’s one lesson from these studies, it’s that exercise is very important, not just for physical fitness or achieving aesthetic goals, but for overall well-being, mental health included.
Conclusion
No matter your age, incorporating exercise into your daily routine can significantly reduce the risk of developing dementia later in life. For older adults, exercise still offers immense benefits for the brain, body, and mind.
Even dedicating just 15 minutes daily to activities like walking, jogging, or going to the gym can go a long way in preventing dementia and other health issues.