Mystery of the meat-eaters' molecule
source: http://www.telegraph.co.uk/earth/main.jhtml?xml=/earth/2008/07/08/scimolecule108.xml
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What does it mean to be human? For most people, it all comes down to that extraordinary object between our ears, and how it blesses us with language, laughter and logic. But not for Ajit Varki, a doctor-cum-scientist who works in California.
For him, being human is also about a single chemical that separates us from our closest relatives, and which could be linked to many of our most debilitating illnesses.
The story began in 1984, when Prof Varki was working at the University of California, San Diego. When treating a woman with bone-marrow failure, he injected her with horse serum. The treatment carried the risk of a side effect called "serum sickness", in which the patient's immune system launches an attack on a molecule present in the serum called Neu5Gc.
Sure enough, her skin erupted with an itchy red rash. Investigating further, Prof Varki found that Neu5Gc was foreign to humans, even though we carry a very similar version of the same molecule - which may be one reason why animal-to-human organ and tissue transplants do not work well.
But in recent years, he has come to believe that the implications of this molecular difference are much wider. He has built up a range of evidence that potentially links Neu5Gc, a so-called sialic acid, to chronic disease.
This is because the animal version is absorbed by humans as a result of eating red meat and milk products, and there is evidence that the body views it as an invader.
Eating these foods could trigger inflammation and, over the long term, heart disease, certain cancers and auto-immune illnesses. Prof Varki stresses, however, that "we have not proven any link to disease, just suggested that it is something to explore".
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MoonLoon
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My comments: I am 57 yrs. old, was a weightlifter, powerlifter, and health fanatic since 9 yrs. old.
Three years ago I took an assignment to work in Nigeria. Since then, I almost partake of no dairy products or red meat. It is amazing the response of my body. Joint pains in particular have disappeared, as well as muscular pains that I had associated with "old age". When in the U.S. I eat a steak almost every night, but no milk or ice cream. For me it has made a difference! I still crave red meat, milk, and ice cream, but I can now see a difference in my body's response.
- 3 years ago
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MoonLoon
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onechance
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MODERATION, OK?
- 3 years ago
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onechance
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neckfire
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onechance:
Good god man, you are like a walking talking caricature of an overzealous, self-righteous, attention wanting treehugger. Even I think you are annoying and I agree with you on most of your views.
Chastising people while holding yourself up on a pedestal is a great way to change their minds...
- 3 years ago
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neckfire
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Dmitri_Molotov
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Cannibalism is against human programming, eating animals is not.
- 3 years ago
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Dmitri_Molotov
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onechance
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Dmitri_Molotov:
You're still avoiding the issue of the environmental destruction that's cause by overproducing red meat.
There are places in the world that HAVE to depend on meat to survive, just like early man HAD to depend on meat for a time...
That doesn't change the fact though that YOU don't.
That also doesn't change the fact the destruction from wealthy nations like ours doesn't FAR outweigh that of the aformentioned impoverished places by the use (and overuse in the U.S.)
- 3 years ago
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onechance
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Dmitri_Molotov
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Dmitri_Molotov:
Cut down on other things like coal plants. Go nuclear. I'm not giving up meat.
- 3 years ago
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Dmitri_Molotov
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onechance
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Dmitri_Molotov:
Do you think YOU can produce the alternative energy? Can YOU cut the coal back? No, but YOU CAN make personal choices to at least cut back the immediate things YOU control, like your choice of diet. That's all I'm saying man.
Don't want to bust your chops.
- 3 years ago
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onechance
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Dmitri_Molotov
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If it hasn't evolved defensive measures to keep it from being eaten, then it should be eaten. Who knows, maybe a million years in the future cows will be the deadliest animals in the universe.
- 3 years ago
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Dmitri_Molotov
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onechance
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Dmitri_Molotov:
With that logic I wouldn't be surprised if you started eating human babies. Makes no sense.
Very weak defense.
- 3 years ago
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onechance
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onechance
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Dmitri_Molotov:
I invite you to really THINK about your attitude.
Possibly, in the future, you can make COMPASSION #6 on your 1-5 profile list.
Maybe you'll MAKE time for #6 when you get to your Junior or Serior year. I hope it comes sooner.
PEACE
- 3 years ago
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onechance
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Dmitri_Molotov
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There will always be people who eat meat. I'm one of them. Do what you want, as long as it doesn't affect what I eat.
- 3 years ago
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Dmitri_Molotov
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Dmitri_Molotov
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I love red meat, and I eat lots of it, yet I have an excellent immune system and rarely get sick. I'd be more worried about eating nothing but vegetables and turning into a human toothpick...
- 3 years ago
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Dmitri_Molotov
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onechance
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Dmitri_Molotov:
Well YEEEEEHAAAAAAAAAAW!
- 3 years ago
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onechance
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Dmitri_Molotov
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Dmitri_Molotov:
whats that supposed to mean?
- 3 years ago
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Dmitri_Molotov
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onechance
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Dmitri_Molotov:
It means that your attitude toward animals and the consequenses that eating them (ESPECIALLY red meat) impose are arrogant and bigoted by nature.
It means that I'm NOT impressed and that you sound like a Rush Limbaugh fan when you say that NOT eating something so damaging to your own health and to the health of OUR (ALL OF OURS) environment is not an option for you.
Even the most carniverous people I know have all at least cut back, admitting that they feel better now and they feel better about making less of an environmental impact.
How are you going to seceed from the US if environmental degradation (from things like RED MEAT production) sink California when the ice caps melt?
Priorities my friend.
- 3 years ago
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onechance
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thinkingisfree
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Dmitri_Molotov:
I care about the environment and love to eat meat. You can live a healthy life and eat meat also. You're not helping the environment one bit by associating vegetarianism with environmentalism. You're actually a distraction from real environmental solutions.
- 3 years ago
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thinkingisfree
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onechance
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Dmitri_Molotov:
thinkingisfree:
NOT true. I invite you to educate yourself:
http://www.virtualcentre.org/en/library/key_pub/longshad/a0701e/A0701E00.pdf
- 3 years ago
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onechance
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thinkingisfree
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Dmitri_Molotov:
I've read that before. Do you assume everyone who disagrees with you is just ignorant. I'm fairly sure that report does not advocate a vegetarian diet. A major problem is the destruction of rain forest for cattle grazing land. What the report would indicate is that reform is needed, which I agree. Everything we do is going to have an effect on the planet, but using bad farming practices as a straw man against meat is logical fallacy. Using your extreme line of thinking no one should ever drive a car. But the solution is not to never drive, the solution is to have more environmentally friendly cars.
- 3 years ago
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thinkingisfree
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onechance
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Dmitri_Molotov:
I'm not assuming anything, just pointing out the fact of destruction that's caused.
Read my most recent post.
I'm not saying nobody should ever eat meat. I choose not to, but it's a personal choice.
There are circumstances when people have no other nutritional choices, and if done in moderation, it's not a big deal.I only ever brought this up in the first place to highlight the ATTITUDE that came across from Dimitri.
If everyone ATE like he seems to think, we'd probably all be dead already.
And I already have a VERY environmentally friendly car, for the record.
The End.
- 3 years ago
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onechance
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onechance
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WOW! That is SO interesting.
I haven't eaten meat for 8 yrs now and I feel great.
Think that may be the reason I haven't gotten sick for over 3 yrs either... When I DID get sick last, it was (I think) from a friend of mine that had the flu, who, low and behold, eats lots of RED MEAT.
- 3 years ago
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onechance
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neckfire
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onechance:
Correlation is not causation.
- 3 years ago
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neckfire
