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How are trans fatty acids made?
I don't know either, but I can tell you, don't take it too seriously.
I am 45, and I have seen these health crazes and scares come and go like women's clothing fashions. It usually starts with some isolated researcher, who wants publicity and funding for his lab and his job, coming up with some esoteric factoid about the "latest" research into diet issues. Rather than subject his research to peer review, he calls a sympathetic journalist that is looking for attention-grabbing headlines or wants to fill an empty slot in a boring morning news show. He/she appears in a white labcoat and wire-rimmed glasses(the modern secular version of priestly vestments) and makes solemn pronouncements on the "latest" scientific "findings" on this or that "silent killer" of public health, blah, blah, blah... Another source of these fads are people and companies that have products or services to promote. It may be that the trans fatty acid brouhaha was bankrolled by the dairy lobby. I remember about 15 years ago there was a similar scare about "tropical oils" (mainly palm oil and coconut oil) which come from areas of the world where people have way lower cardiovascular disease levels than in the USA. But the USDA was playing the role of lobbyist for domestic oilseed farmers, and the result is that peanut oil and cottonseed oil have replaced tropical oils in restaurant frybaths. Are we any healthier as a result? From what I hear, we keep getting fatter. Bottom line? Just use your common sense. Eat in moderation. Rather than letting your teenager become a couch potato, make them mow the lawn rather than paying Pablo Mexicano to do it, and you can cancel that health club membership that you never use. Ride a bike to the theater, rather than the gashog SUV. Ignore the fads, and live a happy life. |
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How are trans fatty acids made?
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How are trans fatty acids made?
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#4
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How are trans fatty acids made?
Don got it pretty much right on.
Here's another link: http://www.drmirkin.com/nutrition/N198.html Natural fatty acids are either saturated (no double bonds) or unsaturated (one or more double bonds). In addition, almost all natural unsaturated fatty acids are cis- rather than trans-. Furthermore, the double bonds usually begin between the ninth and tenth carbon atoms in the fatty hydrocarbon part of the chain and additional double bonds occur at three carbon intervals after that (these bonds are unconjugated). Our (and animals) metabolisms evolved to break these types of lipids down. Synthetic hydrogenation is unselective about where the double bonds go, or how they are oriented. So you get cis- bonds and trans- bonds as well as spacing other than that described above. We did not see these types of lipids until we made them. We can not metabolize them. Studies have shown that trans- fatty acids can cause all sorts of unpleasant things to happen in your body. The above cite spells out a few of them so I won't recapitulate here. The best thing one can do is to try and limit consumption of hydrogenated fats. It's difficult because they are quite ubiquitous in products found in our supermarkets. We should in fact try to limit total fat intake, but some fats like hydrogenated (trans- containing) and saturated, are worse than others. Jeff Dantzler |
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How are trans fatty acids made?
In ,
jitney wrote: * Another source of these fads are people and companies that have *products or services to promote. It may be that the trans fatty acid *brouhaha was bankrolled by the dairy lobby. I remember about 15 years *ago there was a similar scare about "tropical oils" (mainly palm oil *and coconut oil) which come from areas of the world where people have *way lower cardiovascular disease levels than in the USA. But the USDA Actually the truth about trans fatty acids was squelched by the hydrogenated oil lobby! The first negative article was published in the early 1970s, and the researcher was promptly visited by a bunch of henchmen telling her to put a lid on it. FWIW. -- hillary israeli vmd http://www.hillary.net "uber vaccae in quattuor partes divisum est." not-so-newly minted veterinarian-at-large |
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How are trans fatty acids made?
In article , Hillary Israeli wrote:
In , jitney wrote: * Another source of these fads are people and companies that have *products or services to promote. It may be that the trans fatty acid *brouhaha was bankrolled by the dairy lobby. I remember about 15 years *ago there was a similar scare about "tropical oils" (mainly palm oil *and coconut oil) which come from areas of the world where people have *way lower cardiovascular disease levels than in the USA. But the USDA Tropical oils may not be as bad as trans fats, but they are heavily saturated. Lack of cardiovascular disease in the areas they come from may indicate low consumption and/or especially a less sedentary lifestyle than that of most USA citizens. - Don Klipstein ) |
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