Lifterforlife said:
Well, I can match you in that department bro. It is HFCS that gives fructose the bad rap.
High fructose corn syrup (HFCS), for those that might not know the abbreviation, was only used to guide scientists to the greater problem of overall fructose intake. If you do a search on my posts you'll find all threads about fructose and it's inefficiencies. Fructose intake, not just HFCS, is one of the main reasons for childhood obesity. Recent studies found parents baffled when their child was gaining weight at a strange pace. After examining the child's diet, it was found he was consuming 100gr of fructose per day from fruits on top of his diet. A very interesting case, since many, if not all, parents push fruits on kids at an unstoppable level.
You'll be interested to know that just 1 medium Granny Smith apple, has 25gr of fructose. Go with a large and that can go up to 40-50gr.
Lifterforlife said:
Yes, fructose is stored as liver glycogen, but I believe on first pass only 10% at best is stored. And, so what is the problem with smart fruit intake and topping off liver glycogen? Are you aware the need for liver glycogen, and what it does?
Smart fruit intake is actually quite that, smart. Since fructose doesn't raise insulin, the body also burns more fat after fructose feeding compared to other sugars. Fructose is not the devil it is made out to be.
Liver glycogen is a catch-22, if the liver is full, the glucose / fructose /sucralose intake you have will go straight to your fat-stores. However, the liver does need
some glycogen stores to properly convert T4->T3 and replenish leptin levels. This delicate balance is not reached by stuffing your liver with fructose, overloading it and creating a perfect environment for fat-gains.
Fructose intake tends to trick the person into thinking he/she is hungrier then they should be at the moment. Many studies on animals have revealed fructose's role in a biochemical chain reaction that triggers weight gain and other features of metabolic syndrome - the main precursor to type 2 diabetes. These same scientists prevented rats and mice from gaining bodyfat by interrupting the way their bodies processed fructose, even when the animals continued to consume it.
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....Richard J. Johnson, M.D., the J. Robert Cade professor of nephrology and chief of nephrology, hypertension and transplantation at UF's College of Medicine. "And although genetic predispositions are obviously important, there's some major environmental force driving this process.
Our data suggest certain foods and, in particular, fructose, may actually speed the process for a person to become obese." ....
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Research has also shown fructose induces the rise of uric acid in the blood stream after consumption. Temporary spikes in uric acid block the action of insulin, 'which regulates how body cells use and store sugar and other food nutrients for energy'. When uric acid levels are elevated it can create a metabolic problem and develop: high blood pressure, obesity and elevated blood cholesterol levels.
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"When we blocked or lowered uric acid, we were able to largely prevent or reverse features of the metabolic syndrome," Johnson said. "We were able to significantly reduce weight gain, we were able to significantly reduce the rise in the triglycerides in the blood, the insulin resistance was less and the blood pressure fell."
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Ref: December issue of Nature Clinical Practice Nephrology
American Journal of Physiology-Renal Physiology
Lifterforlife said:
The exposure of the liver to such large quantities of fructose leads to rapid stimulation of lipogenesis and TG accumulation, which in turn contributes to reduced insulin sensitivity and hepatic insulin resistance/glucose intolerance.
Need I say more? thank you for putting the seal on my point.
for those that do not follow:
lipogenesis = the formation of fat; the
transformation of nonfat food materials into body fat.
Overall, if the reader properly reviews my previous post, I clearly stated:
Mr.X said:
However, Fruits can be eaten in light moderation on a regular day-to-day diet, but for a diet designed to lose bodyfat fruits should not be on the list.
http://www.elitefitness.com/forum/showpost.php?p=5738792&postcount=9
It seems a lot of territorial 'fights' happen on the diet board without the regard to what people are saying. Please review what I said again.
I'm not going to make a claim that fruit is horrible and will kill you; however, for a person who has a primary goal to shed bodyfat, fruit/fructose are not an ideal product to have in your diet.
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....Some nutritionists believe fructose is a safer form of sugar than sucrose, particularly for people with diabetes mellitus, because it does not adversely affect blood-glucose regulation, at least in the short-term. However, fructose has potentially harmful effects on other aspects of metabolism. In particular,
fructose is a potent reducing sugar that promotes the formation of toxic advanced glycation end-products, which appear to play a role in the aging process; in the pathogenesis of the vascular, renal, and ocular complications of diabetes; and in the development of atherosclerosis. Fructose has also been implicated as the main cause of symptoms in some patients with chronic diarrhea or other functional bowel disturbances. In addition, excessive
fructose consumption may be responsible in part for the increasing prevalence of obesity, diabetes mellitus, and non-alcoholic fatty liver disease.
Altern Med Rev. 2005 Dec;10(4):294-306.
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