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When people think about staying fit, they
generally think from the neck down. But the health of your brain plays
a critical role in almost everything you do: thinking, feeling, remembering,
working, and playing – even sleeping.
The good news is that we now know there's a lot you can
do to help keep your brain healthier as you age. These steps might also
reduce your risk of Alzheimer's disease or other dementia.
Like other parts of your body, your brain may lose some
agility as you get older. It can deteriorate even more if you don't take
care of it. Science is unlocking many of the mysteries of the brain, but
we don't have all the answers yet. You can do everything “right”
and still not prevent Alzheimer's disease.
How does your brain work? How does learning change the brain?
What about memory? How can you enhance your memory or improve your thinking,
learning, and creativity?
To most of us, "learning" means an attempt to
create a memory that lasts. Mastering new dance steps, learning foreign
languages, or remembering acquaintances' names require our brains to encode
and store new information until we need it.
How much do you remember of what you learned in school?
Unless you've used skills from school in your day-to-day
life, you may have trouble recalling the details. This is why brain researchers
draw differences between learning and memory. They are closely linked—but
they are not the same thing.
Memory, the ability to retain information or to recover
information about previous experiences, is a function of the brain. When
we remember something, a process takes place in which our brains recover
and reconstruct information about things we've done or learned.
Stress hormones kill brain cells in the memory center and cause serious
trouble for the body. Just realizing that and deciding to work on reducing
stress is a good step.
Since the invention of the light bulb, we've become sleep-deprived. "As
a species we have not evolved to need less sleep," he says. "Six
hours isn't enough. We really need nine hours of sleep and almost no one
gets that much." Sleep deprivation is very harmful to the brain.
Regular exercise boosts hormones that keep your brain young. And, there
are studies that show that exercise increases the circulation to the brain
that promotes cell health.
Mentally stimulating activities strengthen brain cells and
the connections between them, and may even create new nerve cells.
Social activity not only makes physical and mental activity
more enjoyable, it can reduce stress levels, which helps maintain healthy
connections among brain cells.
Physical exercise is essential for maintaining good blood
flow to the brain as well as to encourage new brain cells. It also can
significantly reduce the risk of heart attack, stroke and diabetes, and
thereby protect against those risk factors for Alzheimer's and other dementia's.
Research suggests that high cholesterol may contribute to
stroke and brain cell damage. A low fat, low cholesterol diet is advisable.
And there is growing evidence that a diet rich in dark vegetables and
fruits, which contain antioxidants, may help protect brain cells.
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