神经系统的损害对学习能力的影响
the environment may limit learning ability, and therefore what we learn,by damaging the nervous system.prenatal exposure to alcohol and other drugs can interfere with neurological development,resulting in limited learning ability.Often the damage is not apparent at birth and may be revealed only when the child goes to school. It is even possible that children judged to be perfectly normal have somewhat less learning ability than would have been the case had they never been exposed prenatally to drugs.
Neurotoxins, substances that damage nerve tissues, are also a threat to learning ability after birth,particularly in infancy and early childhood.One of the most pervasive neurotoxins is lead,commonly found in old paint and in drinking water. Poor children often
live in buildings with peeling paint,which they eat.the damage is not usually immediately obvious,but it is cumulative;over a period of months,it can make an important difference in the individual's ability to learn.Neurotoxins are also found in pesticides,herbicides,solvents,medications,recreational drugs,and certain foods and food supplements. It's a serious topic. I'm worrying that I have used lots of herbicide in backyard garden. Where is this digest from? 说得真好
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