What about really fat guys?

A FOX NEWS story today shares that some scientists think women "evolved" differences in their backs in order to compensate for the extra weight they must carry when pregnant, thus keeping them from toppling over forward. The differences include an extra vertebra, specialized joints in the spine, and a larger hip joint. "This elegant evolutionary engineering is seen only in female humans and our immediate ancestors who walked on two feet, but not in chimps and apes, according to a study published in Thursday's journal Nature" states this delightful piece. The scientists in question, Katherine Whitcome and Daniel Lieberman from Harvard University in Cambridge, and their colleague Liza Shapiro of the University of Texas at Austin, don't offer any proof that these differences have evolved, merely evidence that they exist, and have existed (according to them) for at least 2 million years. Because these differences are not existent in chimps and apes, they assume that humans adapted and evolved once they began walking upright. Since no fossils have ever been found that show evolution of such primates into humans, this is a faulty assumption to make. Now, if they were to find human female skeletons where these differences did NOT exist, and then some where they seemed to be developing, and then some where they suddenly existed, I would have to rethink my entire worldview. But as evidence stands, it seems much more logical to believe that women were DESIGNED this way ("male and female He created them...") and have been like this since, oh, Eve was created. Saying that "evolution has tinkered..." to produce these differences just seems silly.

But if it's true, then we should be expecting American males of the human species to evolve similar changes in their spines and hips within the next few thousand years, since many of them have similar weight distribution issues: