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Originally posted by DeadFlagBlues
Yes, it matters very much how it's aquired. Processed fructose doesn't have any enzymes, vitamins, and minerals of it's own. You have to compensate micronutrients from your body to assimilate the fructose.
As where fruit or vegetables maintains their own enzymes and aids the processing of such sugars. Not to mention that processed sugars make their way into processed foods, and well all know how poor the nutritional value of processed foods are.
From what I've read, processed fructose causes a lot of confusion after it's ingested. It dulls out your insulin sensitivity, increases cholesterol, confuses your metabolism, produces more lactic acid in your blood, and it doesn't even convert to usable glucose. Your body just ends up kind of throwing it away. The further away our food is away from its natural state, the less beneficial it is to our health.
I thought the link was pretty informative and a good perspective on the validity of these manufacturer's claims of the processed fructose being "natural."
Reactive carbonyls, which have been linked to tissue damage and complications of diabetes, are elevated in the blood of people with diabetes. A single can of soda, however, has five times that concentration of reactive carbonyls. Old-fashioned table sugar, on the other hand, has no reactive carbonyls.
Lona Sandon is assistant professor of clinical nutrition at the University of Texas Southwestern Medical Center at Dallas, and a spokeswoman for the American Dietetic Association. She said the Rutgers study is still inconclusive.
"It doesn't address the risk [of diabetes], it simply shows a possible mechanism for why there might be more risk in children who drink more HFCS-sweetened sodas," she said.
"Although there are other epidemiologic studies showing a correlation between sweetened soda and diabetes, it is not a proven cause-and-effect," Sandon said.
Nevertheless, she suggests that everyone follow dietary guidelines from the U.S. Department of Health and Human Services. Those guidelines advocate reducing sweetened drinks from the diet, and "most health professionals currently recommend that kids get zero sugary drinks a day, particularly overweight or obese children," Sandon said.
Your liver uses a couple of stock transport chains (GLUT2 and GLUT5) to convert it to glucose. The only thing they use is ATP, which you have in abundance.
Your "fruit sweetener" is in general nothing but boiled-down grape juice or pear juice that's been filtered. It's a con job for people that think "natural" sugar is somehow better or different.
Your body does not, in general, make use of enzymes consumed in food. Any enzymes in the fruit or vegetables are degraded by the acid and enzymes in the stomach like any other protein. The exceptions to this are generally digestive enzymes of mammals - their structure generally protects them from digestion as you might expect, so you can consume proteases or pancreatic enzymes. But plant enzymes? Nah. Fructose is absorbed by the intestine, transported to the liver, and processed by the two enzyme chains I mentioned. They're not plant enzymes.
Any fructose does some of this - with the exception of the part where your body somehow can't make use of "processed fructose". Fructose is fructose.
My impression (just reread it - still stands) is that they're quibbling over the definition of "natural" "if a scientist makes it, (even if it's identical) then it's not natural" Ok. It's only "natural" if a plant does the same thing?
So, if I take the same enzymes the plant uses, and also make fructose, it's not "natural". Sure.
It's - the - same - freaking - molecule.
edit: You shouldn't consume a lot of fructose anyway - it really screws with your blood lipids and fat regulation. Specifically, it mucks around with cholesterol, triglyceride, uric acid, insulin, and cortisol, and makes your platelets more "sticky". Fructose is the toxic part of table sugar.
[edit on 4-11-2007 by Tom Bedlam]
Originally posted by DeadFlagBlues
Your liver uses a couple of stock transport chains (GLUT2 and GLUT5) to convert it to glucose. The only thing they use is ATP, which you have in abundance.
Considering that fructose is largely absorbed in your jejenum before it even gets to your liver..It wouldn't necessarily rob your liver of a large number of nutrients, though usually ingesting the food that comes with it that is more than likey to be of no nutrional value, that fructose will be robbing micronutrients through the entire digestion process. After the fact Even then your liver converts the remaining fructose into fatty acids much faster than it does useable glucose. The remaining fructose that the liver doesn't convert is released in your urine. Like I have stated in my last post..
If these sweetners are produced "naturally" then they have nutrients, living enzymes, and vitamins(Grade D maple for example).Though you have an opinion, which is fine, and by now, we all know that fructose = fructose. That argument is bulletproof, and I'm not disagreeing with you. My argument is the way these types of processed sugars are ingested, not which one is better. That element was never part of my discussion. I don't trust anything that's processed.
The argument here isn't what the food enzymes do in your body, but prior to being digested. Fruit and vegetables becoming ripe are due to enzymes breaking them down and processing them makes the product immune from breaking down or aging, and it shows due to the displacement of sugar in your urine, or the conversion to fatty acids instead of glucose. This is why I brought up the loss of your own micronutrients and the like..
Um, all the food you absorb is transported to the liver through the portal system. You really can't use fructose in your metabolism at all, but the liver has systems to convert it to glucose. So it doesn't really have much to do with micronutrients.
When your liver "sees" that fructose, it gets wacky with the fatty acids and insulin balance, which trigger adrenal cascades trying to compensate, so you get cortisol and stress hormones. So maybe the downstream results may be the use of nutrients if you want to look at it that way. You're not designed for a lot of fructose at one shot.
Other than the "living enzymes" part, I AGREE WITH YOUto some extent. Enzymes aren't alive, and if they're plant enzymes especially, you're going to dismantle them right off the bat like any other protein.
But a lot of the "fruit sweetener" I see advertised is boiled down white grape juice, which is basically a fructose syrup, much like maple, and it's not going to be good for you either.
As far as "conversion to fatty acids", the fructose isn't directly doing this, it's being converted to glucose. A fatty acid is a carboxylic acid group with a tail, much more complex structure. What's likely happening is that the liver is responding to the fructose as a signaling system. It does that a lot - jump the gun based on other inputs. You can get the same sorts of effects by drinking an artificially sweetened drink, just the taste in your mouth can provoke your liver and pancreas into "getting ready" to deal with the sugar flux. But then there's no sugar, so you get insulin release, hypoglycemia, and a bad case of munchies. I don't think artificially sweetened drinks are a diet aid for that reason.
From what I've read, your liver sees fructose as a signaling system for starch input, because usually any fruit you eat will be mostly starch which is going to convert to glucose. So the fructose rush gives your liver the heads-up that glucose is about to follow - only with HFCS or fruit sweetener/syrups, it doesn't. So you're left with all this insulin and fatty acid metabolism cranking up to store the glucose either as glycogen or fats. Only there isn't any, at least not right away - it takes time to convert the fructose. So your metabolism is all dressed up and no place to go, and you end up with your cholesterol and triglycerides jacked up, and your adrenal system trying to compensate.
At least with table sugar (sucrose) you get glucose and fructose right now, so they tend to compensate for each other. .
Personally, I'm not a big proponent for sweetening at all, I generally only get it as undesired HFCS in food and the occasional bit of jam or honey. I don't use sugar on food or in drinks. We've had the same pound of sugar in the cabinet for going on two years - it's still half full.
edit: that slow metabolic rate for fructose is another bad thing - your pancreas has two time constants it looks at. If you get a spurt of sugar like a snack, you'll get a spurt of insulin and that's it. But if you sustain the glucose input for more than (IIRC) about twenty minutes, you will provoke a sustained release of insulin. Since the fructose sort of drags out for a while, if you get a big dose of it by itself you'll provoke the "meal" type of pancreatic secretions and get a big drawn out insulin response. That, too, might be part of why HFCS or other fructose sweeteners cause pancreatic damage.
Table sugar would be better. A nice fresh apple would be better yet.