credit: CC by libraryman@flickr 流言：藉由比較草食動物、肉食動物以及人的解剖構造及生理功能，得出結論「人的構造更適合素食」。理由是：1. 人的牙齒和顎骨適合磨碎素食，而非撕裂肉食；2.人的唾液是弱鹼性，較難溶解肉；3.人和草食動物都胃小腸長，適合慢慢吸收不易腐爛的素食，而肉食動物胃大腸短，可快速消化肉，在肉腐爛前排出；肉的殘渣在人的長腸中會產生毒素。 真相：生理結構

The genus Homo had considerably smaller cheek teeth, chewing muscles and jaws than earlier hominins; here, the introduction of raw but processed meat, from which energy could more easily be extracted,