Breast-Feeding Fuels Babies' Big Brains - Yahoo! News
Why some animals, like humans, have bigger brains than others has long puzzled scientists. Now a new study adds weight to the idea that such brainy brawn in mammals is determined by the amount of maternal investment.
The longer the pregnancy and breast-feeding lasts, the bigger the species' average brain size and the longer they live, the researchers say.
"We were interested in the link between the mother's energy input into the offspring and the offspring's development," study researcher Robert Barton, of Durham University in the United Kingdom, told LiveScience.
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