To understand this point, it is necessary to know, first, that the brain is an organ which begins to develop at full speed a few weeks of conception. The process slows to half of pregnancy, but continues until well after birth.
In fact, infants not only continues to increase the number of brain cells, but that in addition, the brain suffers a process of remodeling: neurons and connections that have not been used and under sensory stimuli, establish new ones that originate complex networks disappear. This idea emphasizes the importance of early stimulation during the first years of life.
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However, it is necessary to take into account that intellectual performance is a product of brain function, which can be measured more or less objectively, but that always is quantified as a result.
Nutrition in the development of the child's nervous system. The nervous system of the fetus is very well protected from much of the deficiencies or nutritional excesses suffered by the mother during pregnancy. There are only a few exceptions, such as iodine deficiency, the abundance of vitamin A and folic acid deficiency.
However, after the birth and for a critical period of many months, the development of the nervous system of infant is vulnerable to a number of nutritional deficiencies (especially, protein, iodine and iron) and the excess of some nutrients (in particular, some amino acids).
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