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Evolutionary Medicine

I have been asked to review a pre-publication proof of a book that will be published in May 2009: Evolution Rx: A Physician’s Guide to Harnessing Our Innate Capacity for Health and Healing by William Meller, MD. It offers “a primal yet radical new view of why we act and feel the way we do, why we get sick and how we heal. This new perspective, known as evolutionary medicine, looks at how our Stone Age ancestors lived, loved, got sick and got well over millions of years, which leads to guidelines for living longer healthier and happier lives today.”

He says we are the way we are because that’s what it took to adapt and survive throughout our evolutionary history. To some extent, that’s true, but that’s not the whole story. Sometimes we are the way we are because of an accident of evolutionary history that had no bearing on survival. Sometimes we are the way we are because a useless trait was linked to a useful one and came along for the ride – what Stephen Jay Gould referred to as “spandrels.”

The problem with evolutionary explanations is that we can never know for sure if they are true. We may be inventing “Just So Stories” like Rudyard Kipling’s “How the Camel Got His Hump.” Our explanation may seem perfectly reasonable but we may not have all the information and there may be a better explanation that simply doesn’t occur to us. (more…)

Posted in: Book & movie reviews, Evolution

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