Lots!: Generally, if you have fewer or more genes or chromosomes than you're supposed to have, intelligence may well be affected. Other genetic/metabolic diseases can damage the brain because of the toxic build up of by products from dysfunctional metabolism which the body may have difficulty disposing of.
Answered 9/28/2016
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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