Posts tagged: evolutionary biology
Atossa Araxia Abrahamian on Paleofantasy by Marlene Zuk and the assumptions of the paleo lifestyle set, noting that it has become a popular diet amongst libertarians:
Charges of hypocrisy, however amusing, are facile. Paleo is an improvement on a diet of processed, sugary junk. It’s not the first diet to banish starches, and it certainly won’t be the last. In fact, by any other name, the Paleo diet would be just that — a diet.
But more substantial problems lurk in the reasoning behind Paleo principles. By assuming that all that was once natural is now good, militant Paleo leans on biological determinism to back up its theories. While it may not advocate for a complete reversion to cave-dwelling, it accepts that we evolved in a certain way to do certain things and not others, and that advances in technology, civilization, and culture can do little to change that. This logic, however seductive, is incomplete. You can’t get an ought from a was. […]
Incomplete or flawed interpretations of our biology have long been used to marginalize women, racial groups, even entire civilizations, and nutrition may well become the next variant in this pattern of discrimination. If rice isn’t “natural,” does that make those entire continents with highly developed cultures who eat it “un-natural”? Doesn’t agriculture, however flawed it may be in certain societies, support billions of people? Let’s not forget that for centuries women were considered ineligible to participate in most professions, sports, and diversions on the basis of their supposed female “nature.” Are modern bread-eaters somehow less human than those carrying out “primal” urges by sprinting, lifting, and eating meat?
These troubling questions are probably not the point of an apparently well-meaning lifestyle program. Many adopters of the Paleo diet do so for no reason other than weight loss, or vanity, or ailments caused by certain foods; others are simply curious about how so-called “ancestral” nutrition will affect them, or how certain types of foods affect their bodies. If their giddy testimonials are to be believed, the Paleo diet can cure everything from diabetes to anxiety attacks, which sounds wonderful. Still, the social and political implications of Paleo reasoning ought to be more closely examined, especially as the lifestyle gains adherents.
Full Story: Natural’s Not In It
I thought the idea that humans killed off the Neanderthals was already losing currency. And now a paper published in the journal Molecular Biology and Evolution casts more doubt on that particular hypothesis.
i09’s Alasdair Wilkins summarizes:
A team of Spanish and Swedish researchers say that new DNA evidence paints a far grimmer view of the state of Neanderthals. Their analysis suggests the Neanderthal population had crashed 50,000 years ago, and a relatively small band of survivors then recolonized central and western Europe before their final end 20,000 years later. In a statement, Love Dalén of the Swedish Museum of Natural History explained what they discovered:
Instead the paper’s authors suggest climate change had a greater impact on neanderthals than previously thought.
Alasdair Wilkins writes: “This also raises the question of just how humans would have really fared against a Neanderthal population at full strength. I’m sensing some pretty serious alternate history fodder here…”
Image from New X-Men