Hell_Yes wrote:Are you saying that nutrition has no bearing on intelligence?
yes & no.
Intelligence precedes health & nutrition.
Intelligence, by definition is an ability, an ability to take in knowledge and apply it, ability to duplicate what one perceives and then use those perceptions to do something.
Yes, chemicals can prevent duplication, can alter the ability to duplicate. Too much salt or sugar, in massive quantities, as an example, can alter perception, and thus there is an apparancy of reduced intelligence. Same with drugs, in varying quantities.
It's the chicken-egg dillema again though. Was the intake of the chemicals the result of previous low intelligence or the result of other factors? And also, intelligence can return upward when the chemicals leave the body IF there is no physical damage to perceptors (eyes, ears, touch, etc).
But...the individual's intelligence is more greatly effected by experience, by education, by training and by the influence of others, good & bad.
And also, there has been no valid scientific proof that infant intelligence in humans has anything to do with cells & nutrition, meaning that intelligence is not determined by dna or genetic makeup. Rats & rabbits cannot be accurately compared to humans, unless of course the humans want to breast feed their infants at a public swimming pool!