Walking just 25 minutes a day ‘can stave off dementia’

Just 25 minutes of walking a day could stave off the debilitating effects of dementia, a new study claims.

Researchers in Canada monitored a group of 38 adults with vascular cognitive impairment, the second most common cause of dementia after Alzheimer’s. 

They found that those who took a few brisk walks a week – amounting to three hours in total – experienced an improvement in brain function. 

After six months, they had improved reaction times and other signs of improved brain function, the Canadian team reports in British Journal of Sports Medicine.

The team said their research also suggests regular brisk walks could reduce one’s risk of developing VCI in the first place.  

Researchers in Canada monitored a group of 38 adults with vascular cognitive impairment, the second most common cause of dementia after Alzheimer’s. The results were stark, they said

The brain is a highly metabolic organ and to keep it healthy, it requires good blood flow to deliver the necessary nutrients and oxygen to its tissues. 

VCI refers to mildly impaired thinking or more advanced dementia that’s due to the same kinds of blood vessel damage seen with heart disease elsewhere in the body. 

Aerobic exercise may also benefit the brain by increasing growth factors, which are substances made by the body that promote cell growth, differentiation and survival, she said. 

‘It is well established that regular aerobic exercise improves cardiovascular health and cerebrovascular health,’ the study’s senior author Teresa Liu-Ambrose said.

‘More specifically, it reduces one’s risk of developing chronic conditions such as high blood pressure, diabetes (type II), and high cholesterol.

‘These chronic conditions have a negative impact on the brain – likely through compromised blood flow to the brain.’ 

Liu-Ambrose is a researcher with the Aging, Mobility, and Cognitive Neuroscience Lab at the University of British Columbia in Vancouver.  

She and a research team…

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