While it may not give you
a headache, a sedentary lifestyle could hurt your brain. Lack of physical
exercise is associated with increased incidence of obesity, cardiovascular
disease and diabetes, which increase your risk for cognitive decline and
dementia, including Alzheimer’s disease. On the other hand, exercise and
intellectual enrichment enhance your chances of enjoying optimal brain health
as you age.
Both epidemiological and
population-based studies reveal an association between regular exercise and
reduced risk of developing Alzheimer’s disease and other forms of dementia, and
the prevention of neurological decline. Aerobic exercise and cardiovascular
fitness are known to promote cognitive function and increase circulating levels
of brain-derived neurotrophic factor (BDNF), a protein in the body that
supports neuron longevity and the growth of neurons and synapses. BDNF supports
areas of the brain responsible for memory, learning and higher thinking. In
addition, several studies have shown a connection between being overweight and
an increased risk for Alzheimer’s disease.
Studies on mice and rats enhance
our understanding. Laboratory animals that had access to running wheels and
more stimulating environments showed improved spatial learning and memory.They
also had an increased amount of neurogenesis and a greater number and strength
of synapses over their “couch potato” peers. The improved brain health due to
exercise was evident even in mouse models of Alzheimer’s disease, or in
instances of brain trauma, stroke, or old age when compared with sedentary
mice.
Bottom line: Although more research is needed, the
evidence shows that when you challenge your body with physical activity, your
brain backs you up by staying healthier and sharper as you age. Regular
exercise truly benefits your brain and your body.
Visit Wellness Workdays for more information about our worksite wellness programs
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