Published in Gene Therapy Weekly, October 20th, 2005
So what is it that gives us our unique "humanness" and higher intelligence' In an article about to be published in the journal Medical Hypotheses a group of Portuguese researchers propose that the differences which separate apes and humans, such as brain size and intellect, can be explained by differences in thyroid and steroid hormones.
It is now well-accepted that intelligence is dependent on brain size, and in fact the brain of an ape is approximately a third of the size a human's brain. This means "factors" known to affect brain size might be involved...
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