Monday, March 30, 2009

Aging Brain

Our Brain

The brain together with the spinal cord, constitutes the nerves system and controls everything we do, and every thought we have. The brain works all the time. It is responsible for monitoring and regulating unconscious and voluntary actions in the body. It is also the intellectual centre that allows thought, learning, memory and creativity. The spinal cord is a thick bunch of nerves running from the brain down the spine. Branching off from it, is a complex network of nerves that runs to every part of body which carry signals to the rest of the body and back to the brain, from inside and outside the body. The information from outside is gathered by our five senses, sight, hearing, smell, taste and touch.

Effects of Aging
Two thirds of all people eventually experience some significant loss of mental lucidity and independence as a result of aging. 60 years and older experience significant cognitive decline, including declines in memory, concentration, clarity of thought, focus and judgment with an increase in the onset of several neurological problems like Alzheimer's disease, Parkinson's disease, stroke etc

Physically what happens to our brain as years go by....


Research has shown that as brain ages or as people get older, there will be a decrease in brain weight and brain volume, widening of the grooves on the surface of the brain and enlargement of the ventricular system (ventricles- a cavity or hollow part of the brain).

The decrease in brain weight and brain volume are probably due to loss of neurons (specialized cells transmitting nerve impulses) and extra cellular fluid. Man may have a 20% reduction in brain weight between the ages of forty -five and eighty -five and lose thirty to fifty thousand neurons a day from the brain and nervous system as they age. Enlargement of the ventricular system may be probably due to loss of cells surrounding the ventricles (the spaces in the brain that contain cerebrospinal fluid).

Probable reasons for the change...

Surprisingly there is a certain percentage of people who function very normally even when they age. So the causes of loss of memory, concentration, focus and the inability to function independently as man ages may not be only due to the aging itself as previously thought. But may be due to a combination of other factors like Brain-unhealthy behavior and habits, insufficient mental stimulation, limited thought or response control strategies, brain unhealthy diet or inadequate supplements, lack of novel experience, lack of sufficient social interactions and cooperation etc.

Ways to delay effects of aging...

To stay mentally sharp, you need to work your mental muscles each and every day. Get involved in something that keeps your brain busy such as taking up a new class, exercise, martial arts, mind games etc. Any activity that involves concentration will help exercise the mind and keep it strong.

Mental stimulation
After 40, taking up a new language or any new course or art classes, whether joining a formal class or learning on your own is beneficial. As long as you learn something new, the nerve cells in your brain will grow and the connection between them will continue to strengthen.

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