Meat-eating was essential for human evolution

By Patricia McBroom, Public Affairs

BERKELEY-- Human ancestors who roamed the dry and open savannas of Africa about 2 million years ago routinely began to include meat in their diets to compensate for a serious decline in the quality of plant foods, according to a physical anthropologist at the University of California, Berkeley.

It was this new meat diet, full of densely-packed nutrients, that provided the catalyst for human evolution, particularly the growth of the brain, said Katharine Milton, an authority on primate diet.

Without meat, said Milton, it's unlikely that proto humans could have secured enough energy and nutrition from the plants available in their African environment at that time to evolve into the active, sociable, intelligent creatures they became.

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