Vegetarianism linked with high IQ

2007 April 9
by lackhead

Eat your veggies!A new British study has found a strong correlation between having a high IQ in childhood and becoming vegetarian later in life. Too bad the converse is has not been studied, so that I can say that being a vegetarian now means that I’m smart.

By the way, note that the definition of vegetarianism that they went by was “the practice of living wholly on vegetable food, with or without dairy products, honey and eggs” which is what is called vegan in my book. However, using a more strict definition of vegetarianism makes me feel better about hearing things like only 2% of the American population is vegetarian (compared to 6-10% that say they are “almost vegetarian” ). But whatever, it all depends on subjective definitions, and it is easy to get lost in there. Or maybe it is just me, being one of the outliers that became vegetarian through no relationship to my own IQ.

-c

10 Comments leave one →
2007 April 9

Whew! I’m all caught up now.

Any speculations on why people with higher IQs tend to choose vegetariansim?

2007 April 9

None from the article- they just noted the statistical link. But, here’s a thought- one hallmark of intelligence is the ability to form associations or relations among diverse ideas or situations. Analogies, you might say. Well, if one were gifted in making such connections, wouldn’t it make you more likely to identify with others? If you can see something that is wrong when it happens to someone or something else, then you can see it as wrong in the abstract, not just in the specific example (or not just when occurring to yourself). As such, I think it would make you all the more likely to be vegetarian, be socially liberal and accepting, etc.

Of course, that’s just my shot in the dark.

-c

2007 April 12
Satan permalink

I’d say that denying the design of 1 million years of evolution making us omnivores, is not a sign of intelligence at all - but that’s a matter of opinion.

I would hazard a guess that smart people are able to rationalize easier why to take steps in contradiction to the design of nature, or are simply more likely to dwell on the moral questions involved in killing animals for food and therefor build up a desire to take steps to mitigate. Hence, the trend in question here.

Aside from a handful of Petards, the consensus of anthropologists is that predation is what drove our evolutionary course to develop the intellect that we have now, enabling us to delude ourselves into thinking that we are naturally herbivores. As Larry Niven points out, “It doesn’t take any brains to sneak up on leaf.”

Other traits confirm the predatory nature of man. Our eyes are set forward, to provide binocular vision to help judge distance to prey. We have prominent canine teeth for tearing meat, which have in our evolutionary path shrunk a bit as we substituted tools for teeth in cutting flesh. Our digestive tracts are not long enough to fully utilize plant material, but have the traits found in omnivores and carnivores, geared around digesting meat. Meat is very easy to digest compared to any plant material and it packs a lot of energy into a very small package - which in turn provides the building material allowing such a large brain to evolutionarily develop and function.

The most telling organ showing our natural omnivorous state, is the appendix. This vestigial organ is most likely the remnants of a cecum, which is a where modern herbivores house bacteria that is used to digest cellulose, that cannot be digested otherwise. That we no longer have a cecum, nor the proper bacteria found in the cecum of herbivores, shows that we have been omnivores for a very long time and that even if we once were, we are not naturally obligate herbivores anymore.

Another very telling mark is the requirement of vitamin B12 in human nerve and and blood development. B12 is not produced by any animal or plant alone, it is produced by various bacteria - bacteria which thrive in living animals, but not in living plants. (There are B12 microorganisms which can be found in plants, but when they are present, the plants are rotting and inedible.) Since B12 is absolutely required for proper brain development in infants, it is essential that the child gets B12 through their mother’s milk. Before modern day vitamin supplements, the only way that B12 would be present in human milk, is if the mother is eating meat. A Vegan mother, back in the day before vitamin supplements, would have a child that would end up mentally retarded and most likely die from the resulting anemia.

Last, but certainly not least, is the telling evidence of the violent capabilities of humans. Such violent behavior, to the extremes that we see in humans and other primates, are not found in obligate herbivores. Herbivores will fight to protect themselves (depending on the herbivore; rabbits for example fight like the Monty Python Vorpal Bunny when cornered) but they do not kill for apparent pleasure, as many carnivores - including man - do.

Ultimately it is an undeniable fact: humans are not naturally obligate herbivores - at least not anymore. Without a cecum, and with a requirement of B12 in normal nerve and blood development - we cannot be obligate herbivores by design of nature.

Any adult deciding to take the route of a Vegan diet, should do so carefully and should be very, very careful to make sure that any child raised on a Vegan diet gets the proper B12 supplement to prevent nerve malformation and anemia. (Thankfully, this is easy to do with yeast based supplements, and the requirements of B12 are not high dose.)

A Vegan diet can be healthy, but one must be a little careful in its implementation for it to be so.

Irony holds that the only thing allowing us to choose a Vegan lifestyle, is the omnivore propagated brain which allows us to find ways around our natural design.

2007 April 14

[...] I have mentioned before that analogies or metaphors might be considered a hallmark of intelligence. Apparently they are also a sign of insanity. [...]

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2007 April 15
Satan permalink

Insane, eh? Well, this went from science to nonsense quickly. Care to address the data?

The largest obstacle I’ve found in arguing over the biological traits of human diet, is that those who have taken an elitist, moralistic high road in choosing not to eat meat, cannot discuss biology without hinging their entire argument on the morality of it. Nature doesn’t care about morality - morality is a human mind game. Our digestive tract doesn’t care about morality, it simply adapted with time over our diet. Eating carrion, insects, grubs and the like started the process of an omnivorous diet, which evolved into active hunting as we got better at tool making. Without the human brain to provide for hunting strategy, tools to use for taking down large and dangerous prey, we’d still be shifting through the forest litter, eating plants, fruits, grubs, insects and carrion. Tool making is as much an evolutionary provided hunting mechanism as claws and fangs - far superior to claws and fangs, actually. I’d put my .308 Model 700 Remington up against a lion’s claws and fangs any day. My brain will work on a plan to sneak up within range and the lion will die near instantaneously, without my having to get closer than 1,000 yards. Name another predatory that efficient or merciful in it’s slaying. Most animals taken by predators have to deal with being eaten alive, before they finally expire from the intense trauma of the experience.

In the animal kingdom, our tool making has made us gods. Last I checked, chimpanzees aren’t able to split the atom.

If you want to take the moralistic preachy route with Vegan-ism (frankly, I’ve rarely seen the Vegan argument made without the moralistic, preachy aspects - which is real turn off, I might add) the argument can be made that eating meat is responsible for all of our ills. If it wasn’t for our meat eating, pushing us to become active hunters, we never would have reached the point where we would be able to produce all of the harm we have to the Earth and each other. We’d still be swinging in trees, throwing our own feces at each other, rather than bullets and bombs.

Gods we may be compared to the other creatures around us, but we’re very dark gods all in all.

Since we’re on the subject of morality, if the whole human population went hyper Vegan tomorrow, not using animals for anything, what would you do with the various domesticated species we’ve developed, which cannot survive any longer without us? (There’s that gods among animals things again - we’ve molded species to evolve in the way we wanted them to.) Dogs and cats can make it on their own (especially cats, which are not so much domesticated as they are taking advantage of a good thing by using us) but cattle (especially), domestic pigs, sheep and others probably aren’t going to make it - dying en mass - if we just let them loose. What is the moralistic high road to take here? By setting them free, you’ve effectively produced genocide. Do we provide for them while forcing them not to breed, until we have manageable numbers for zoos? What about all the medicines we’ll have to give up when we don’t use animals for producing such anymore? Will humans still be allowed to defend themselves against animal attacks (which are going to increase dramatically with the wild dog packs we’ve made) or do we take the ultimate moral high road and allow ourselves to become food for a species which doesn’t pester itself with these questions?

What about plants, anyway? We’re still killing living things when we eat plant material, or are we going to become fruitarians - plant abortionists - in our diet? How are we going to produce enough fruit for our current population levels? If we can’t sustain our current levels, how do we convince everyone to reduce their population levels to a point that we can sustain ourselves?

Are we taking a moral stance against destroying other life, or are we simply chordata bigots?

Now, since according to this study, you vegetarians and Vegans are supposed to be smarter, lets hear your plan for dealing with these problems - as it’s obvious from my writing, that this omnivore is not smart enough to understand the issues at hand.

Last, but not least, I don’t recall saying at any point that there is anything wrong with a vegetarian or Vegan diet - as long as you’re careful to get B12 from yeast supplements, especially for children, you’re going to be just fine. This is based on science, not morality. It can be done in health and general well being.

On the contrary, the Vegan viewpoint is one of moral superiority by design. Until it changes to a dietary model based entirely on science instead of morality, I have a hard time justifying its arguments. It is no different than any other religion.

These arguments can be made palatable, however, such as the Vegan Society, who’s stance is certainly easy to understand and quite forward. They use science to show how their moral stance can be made into their healthy dietary plan. I find their somewhat non-preachy tact refreshing. They never hide the fact that their decision is entirely based on moral principals, not some mistaken, unsubstantiated belief that we’re naturally obligate herbivores.

PETA on the other hand, are chock full of such repulsive assholes, that I can’t take anything they say seriously and pretty much assume at face value that they are lying until it is proved otherwise, by multiple outside sources. These freaks even want our pets to be Vegan, which is certifiably insane. (Cats are obligate carnivores, morons!) Not only do they preach their conceited morality like Born Again Christians, but they lie, obfuscate and generally weasel their message out through arrogant and inflammatory publications and actions, along with verbal if not physical support of terrorism. Their hypocrisy knows no bounds, nor does their lack of general tact. Even in the cases that they do help out in stopping animal abuse, they counter by making sweeping assertions about farm animals based on nothing more than delusion. It’s sadly obvious that no one in PETA ever grew up on a farm, or they wouldn’t make half of the stupid statements they do on the subject. I find nothing truly moral or amicable in PETA. This fringe lunatic asylum, masquerading as a political cause, does more to harm the Vegan stance than any other function or group - hands down. As soon as someone tells me that they support PETA, my natural instinct is to discount every point they try to make concerning diet and animal care - because I have to assume that they’re getting their information from this very, very unreliable source.

Politics aside, I’ve seen studies showing the supposed benefits of the vegetarian diet and just as many others saying that the real cause of problems with the meats we’re eating, is what we’re feeding and injecting into the animals we get it from. This debate is likely to rage for some time.

With such a tiny proportion of the population taking the Vegan lifestyle, with only a slightly larger group calling themselves vegetarians (4% consider themselves vegetarians according to polls) there is one gigantic uphill battle for minds, trying to change the remaining 96%. Denying the evolutionary history of man’s digestive system, lying in essence, is not going to help foster that argument. In fact, it makes those arguing this viewpoint to look stupid, in spite of what their IQ’s may be. And for the love of sanity, get rid of PETA already…

Just an opinion from an insane man, who is likely to remain on omnivore given the overall scientific weakness of the current arguments to the contrary.

2007 April 17

Ok Scotto, it’s been a busy couple of days, and I know we’ve talked about this offline, but I would like to respond to a couple of things:

Nobody is arguing a biological basis for vegetarianism. We are omnivores, just like our closest ape relatives, which includes relying on heavy amounts of fruits, grains, vegetables, nuts, etc, but also insects and the occasional meat (for all your arguments as to why we don’t resemble cows, we don’t resemble cats either…we’re kinda in-between). But I would be remiss to consider our evolutionary past as an argument for continuing with a behavior. Else we should still be clubbing women and dragging them back to our caves (have we really moved on from our misogynistic past?), and we’d still be fearful of the Gods who lived in the clouds and made rain. Oh wait, maybe we haven’t moved too far from that either, and maybe we haven’t evolved as much as we like to think anyway.

But the bigger point is that vegetarianism is a choice, and it is a healthy one. By default, quite healthier than your average American diet (which is way too far skewed towards meat/dairy that anything our biological ancestors ate). And certainly you can do your body harm through any diet if you approach things with ignorance, which most Americans do, regardless of their stance on vegetarianism. In my personal life, one of the best things about becoming a vegetarian is that it made me closely examine my own diet and become more knowledgeable and more aware of my relationship with the food I eat.

The point being that the choice between being vegetarian and being omnivorous is not really a factor as to how healthy your diet is. Your point about the steroids, antibiotics, hormones, etc. that people consume through the meat they eat is very well taken. That issue is still salient with vegetables, although it is a lot worse with meat (kinda like how security is an issue you should think about when running Linux, but it is sooo much more over the top when you run Windows). But like just about anything, too much of something is generally detrimental, and the American expectation for gluttonous amounts of meat and dairy in their diet goes very, very far into the unhealthy zone.

And your rant about B12? Yes, it is important, and I’ve done a *lot* of research into this. While I do admit there are some pretty bad side effects from B12 deficiency, I will say that if you toned down your descriptions a bit you might chill back into mere hyperbole. Maybe…but you have a long way to go before you get back to reality in any case. I find it funny to be lectured by a vegetarian-hater such as yourself on the perils of raising a vegan child, when I’m the one who has experience with it (successful experience, I might add).

I am really, truly sorry that you focus so much angst and energy on PETA, veganism, etc. Really, while there are truths in what you are saying, you’re focusing on a fringe and blowing that up to be the poster child for an entire ideal. And I certainly relate- I have to catch and check myself when it comes to religion, or politics. But I do sincerely believe that after many, many conversations and arguments with you on this topic, is that you just can’t seem to really see things with a non-biased eye. And don’t get me started on the whole “what about plants” thing- that’s so myopic as to not even be worth addressing, and shows your fundamental misunderstanding with vegetarianism in general.

The other thing I’d like to comment on is your Niven quote, “it doesn’t take brains to sneak up on a leaf.” Well, I think that to be quite shortsighted, and very close to the Intelligent Design argument tactic of “I can’t think of a way how it could work, so there can’t be a way.” I can think of a zillion ways in which advanced cognition could help an herbivore, or an omnivore for that matter. But that’s not even on point, because what I mentioned specifically was empathy, not cognition. And I would think that would have more to do with living in groups and societies. To whit, read the tons of articles out there concerning empathy among chimps (see this New York Times article also, but there is a wealth of information out there).

Which brings me back to my original claim, which you really have yet to really comment on- that empathy is a non-trivial component of overall intelligence. Which, statistically is what they’ve seemed to show with the article that started this whole thread. And it makes sense- empathy is closely related to being able to imagine what it is like to be outside of one’s self, to view a perspective outside of one’s existence, which seems to me like one of the central tools in being able to reason.

But maybe you agree with that. I certainly do agree with one relevant thing you said:

I would hazard a guess that smart people are able to rationalize easier why to take steps in contradiction to the design of nature, or are simply more likely to dwell on the moral questions involved in killing animals for food and therefor build up a desire to take steps to mitigate. Hence, the trend in question here.

Except I wouldn’t use the words “contradiction to the design of nature” but rather, choosing which facet of our design to emphasize. But regardless, at least on the relevant topic, it sounds like we might agree. :)

-c

2007 April 23
Satan permalink

I don’t hate vegetarians. I hate vegetarians preaching to me about how unhealthy my diet is because I eat meat, or making claims which science doesn’t back up, such as red meat in and of itself being toxic, or that we’re naturally herbivores. We are omnivores by current design and any path off of that is a choice to do otherwise, nothing more. It is not healthier, nor is it morally superior. Many vegetarians would love to claim both, but the facts don’t weigh in support.

A vegetarian diet certainly can be healthy, but you have to be a bit more careful about what you eat. That in itself, is a habit everyone could take onto themselves and be more healthy. If there is any benefit to the vegetarian diet over the “typical” diet, it is that some care is actually being taken, rather than just grabbing the brightest looking package or trusting processed foods without reading the ingredients. Personally, I don’t trust processed foods at all. I’d rather gather, pick, hunt and kill my own food, thank you - but I don’t have the time. Maybe after I retire.

I have a “biased” viewpoint on vegetarian preaching, because aside from a couple of exceptions, I’ve met nothing but. From my brother, a militant Vegan, to several PETArds giving me crap for wearing leather - the experience has been generally irritating.

As for “being lectured” about B12, it was more a point as to why we are not herbivores, not advice aimed at your dietary habits. I honestly don’t give a damn what you do - until it directly affects me. Otherwise, it’s your business. Cram tossed salad up your arse if you think that’s going to improve your health. Do the same for your son, for all I care. Cram tossed salad up your arse, or your son’s arse, while you’re driving your car and weaving all over the road - now I care…

PETA may be the fringe, but it’s very visible. Think “animal rights” and PETA is the first thing which pops up. I believe that I said that they’re not the only source for such a philosophy, nor the correct source. I instead suggested to drop them from the picture in order to improve the look of the philosophy to the outside world.

As for your criticism of Niven’s quote, you’re missing the point. Even though you “can think of a zillion ways in which advanced cognition could help an herbivore”, no matter how much a prey animal develops in intelligence, the predator remains smarter, or the predator dies off. It’s as simple as that. Intelligence develops in prey animals as those who outwit their predators and live, pass on the change; just as the smarter predators live over the dumb ones, because they get to eat. Without the pressure of predation, neither advance. I would hazard a guess that our intelligence is a combination of both pressure to survive other predators and to hunt other animals. Predation is the pressure cooker which creates intelligence: one way or the other.

Now, imagine a world with no predation. How much brains are required to sneak up on that proverbial leaf?

“Which brings me back to my original claim, which you really have yet to really comment on- that empathy is a non-trivial component of overall intelligence.”

Is empathy a component of overall intelligence, or a side effect thereof?

We like to think that it is a component of intelligence, but I tend to think that it is merely a side-effect of having a mind which in general is trying to view problems from multiple angles. Viewing something “through the eyes of another” is simply an extension of this process. Furthermore, empathy would be impossible without an imagination capable of fictionalizing the resulting viewpoint. So, I would argue that problem solving from multiple viewpoints, coupled with imagination, results in empathy. Empathy is not, therefor, a component of intelligence, but a result of it. It is further tempered by emotional reaction. Those who react the strongest to empathic situations also tend to be the ones who allow their emotional responses to have a strong play in decision making. Since emotions are very old code, it takes quite a bit of mental exercise to achieve an empathic view without the emotional response. I’d say that it’s nearly impossible to do so. Hence, when we empathize over the animal’s plight, our emotional response takes hold.

Those intelligent individuals who choose to become vegetarian over this response, justify their position by bringing up the imagined empathic viewpoint and weighing it on a moral scale. Those intelligent individuals who remain omnivores, do so by either discounting animals in a poor rationalization, or by accepting that they are part of a larger system and assuage their emotional response to their empathy for the creature, by killing quickly and as painlessly as they can. The friction comes between the two viewpoints, because the first group can’t get past the idea of killing animals for any reason. It becomes an issue of morality.

It is a human debate, with human desires and anthropomorphic musings driving the arguments. In the meantime, a gazelle just got nabbed by a crocodile in Africa and is being eaten alive.

Nature doesn’t care about our moral quandaries.

2007 April 24

I don’t hate vegetarians. I hate vegetarians preaching to me about how unhealthy my diet is because I eat meat, or making claims which science doesn’t back up, such as red meat in and of itself being toxic, or that we’re naturally herbivores.

Great. Nobody here is claiming any of that, so why rant about it?

A vegetarian diet certainly can be healthy, but you have to be a bit more careful about what you eat.

You know, I am getting tired of your uniformed rants. I’ll just leave with this:

you’re wrong

2007 April 24
Satan permalink

Ah, the famous, “Nah nah nah nah nah nah nah!” defense. I was wondering when that would show up.

2007 April 27

Look, I obviously don’t have the time and energy that you do to devote to this, but something’s been sticking in my craw and I think it would serve as a good example for what frustrates me so much about arguing with you. Let’s take your last paragraph about Niven’s quote:

As for your criticism of Niven’s quote, you’re missing the point. Even though you “can think of a zillion ways in which advanced cognition could help an herbivore”, no matter how much a prey animal develops in intelligence, the predator remains smarter, or the predator dies off. It’s as simple as that. Intelligence develops in prey animals as those who outwit their predators and live, pass on the change; just as the smarter predators live over the dumb ones, because they get to eat. Without the pressure of predation, neither advance. I would hazard a guess that our intelligence is a combination of both pressure to survive other predators and to hunt other animals. Predation is the pressure cooker which creates intelligence: one way or the other.

Couple of points:

  1. What does it imply about herbivores? Well it implies that they don’t necessarily have to rely on intelligence for survival, which I would agree with. What I rejoined with is that there are a lot of other pressures that could lead to intellectual development regardless of diet- limited resources means that herbivores are going to compete against each other, and against the environment to ensure their survival. As such, Darwinian fitness prevails, no matter how that fitness is achieved, through intelligence, specially adapted proboscis’, hearty digestive system, etc.
  2. What does it imply about predators? Well, it implies that they necessarily have to rely on intelligence for survival, which I don’t agree with. As I mentioned before, there are a ton of ways to fight in the battle for survival, and intelligence is certainly part of the equation but not all. Look at sharks, or their paragon- the Great White. Dumb as a rock; their intelligence is limited to following the scent of blood and biting and swallowing anything it bumps into. But the master of their domain because they are just so fucking good at its niche- by exploiting dominance in non-intellect ways.
  3. So what is the conclusion in all this? Intelligence is a methodology for a species to become more evolutionarily fit. A very useful one, but just one. One could even argue that diet (predator vs. prey) would select for different kinds of intelligence, or better yet, you could argue that omnivores would more likely rely on intelligence as an evolutionary tool than either herbivores or carnivores, and I think we’d both agree with that. But it is not diet that pressures for selection, it is competition; diet can certainly influence trait selection, but it is not the pressure there (i.e.- a predatory species certainly couldn’t develop fecundity as a survival mechanism because food sources would self-limit that development path, whereas plants are way plentiful and creatures like rabbits and deer can use overactive breeding and large numbers to ensure species survival). To claim that predation is the sole cause of intelligence is misguided application of inductive logic.
  4. But what does this have to do with anything else in this thread? Nothing. The original point was concerning emotional development, its relation to overall intelligence, and how that might influence diet. And that isn’t something you did address until the very end of your last post. Instead, you used the topic of vegetarianism to go off on a rant concerning vegetarianism, accusing me of denying that we’re omnivorous, then tried to convince me that humans are predators (we’re as (un)like cows as we are leopards), the dangers of a vegan diet, and that vegetarians are, as a group, preachy and ignorant. Well, the later can be said of gun owners, can it not?

So, I find myself getting frustrated at your posts here in this thread because while they do have a lot of things in them that I agree with (yes, we are omnivores, yes, vegetarianism is a social choice, yes, predation can promote the evolution of intelligence, etc), there are a number of things I don’t agree with (no, you don’t have to be a predator to be intelligent, no, a vegetarian diet is no less risky than an omnivorous diet, etc), all mixed in with some hash of inductive reasoning that really adds up to nothing but a rant about your own personal issue (that you feel that vegans/vegetarians are preachy assholes). And you know, even on that one I agree somewhat with you, but I would change it to say that people are preachy assholes. Not being a vegetarian, I would say you’ve had little opportunity to feel the “preachiness” of some omnivores out there, but let me tell you it exists in spades.

Oh, and for the uniformed bit, that was more frustration at my part at the hyperbole you muster for the dangers of a vegetarian diet. But, what I will suggest, is that you go read, well, just about anything by E.O. Wilson on the topic of sociobiology- I think you will find it enlightening and then perhaps you will see that you and I are not all that far off in how we look at things after (even though I am a vegetarian wing-nut). In particular, I think you would really enjoy On Human Nature- and I am not saying this to be condescending or preachy; I really do think you would find it fascinating, even if, like me, you don’t agree with everything contained within.

-c

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