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The brain is so very delicate, with consistency sometimes described as similar to butter and gelatin! Therefore surgical procedures are very tricky and usually are only done in cases where tumor is growing or to remove clots from the circulatory system, or blockages from the cerebral spinal fluid system which bathes the brain.
Where it was once thought that the plasticity of the brain (the ability for the brain to change) was completed by around age 6 or 7, it is now known that it is possible for the brain to change as long as one is living. Of course young children still have the greatest ability to improve or damage their brain - and much of this is related to what they are exposed to intellectually, emotionally, and physically/nutritionally - as well as do to the fact that they have an overabundance of brain cells that are gradually decreased over the first 7 years depending on what is 'used'.
But again, as long as one lives, the brain can be improved. This is achieved by 'exercising' the brain. New pathways are formed when ever you learn something new. So the more variety in one's environment, and the more they focus and study, the more they will be able to increase their brain power, even influencing the IQ.
Because the brain is made up almost entirely of the essential fatty acids such as the Omega 3's it is important to have plenty of these essential fats in the diet. These fats are obtained by consuming cold water ocean fish, free range animals, and by certain other grains and nuts such as flax seed or flax seed oil, walnuts, almonds, etc.
As one ages, certain neurotransmitters that are important to brain functioning may gradually become depleted (especially if there has been prolonged stress, or there has not been a well rounded diet). There are medications that can assist with replenishing these neurotransmitters, and studies are showing that over time they increase certain areas of mass in the brain. These drugs include the SSRI ans SNRI medications.
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