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Effects of Fructose vs Glucose on Regional Cerebral Blood Flow..

Brian Quarton [OLD]Brian Quarton [OLD]
in General Training Discussions

I ran across this article in JAMA from Jan. 2. The abstract is below. I am always skeptical of some of the alarmist claims of the evils of this or that, but fructose seems to be really bad for our health. It seems that fructose doesn't make us feel full like glucose does after we eat it. Changes in regional cerebral blood flow seem to back that up. The comments in the article go on to say some scary things about the stuff, so my plan is to continue to avoid it. EXCEPT in racing, but that is not covered in the article.

http://www.ncbi.nlm.nih.gov/pubmed/23280226

Comments

  • cgres123cgres123
    My understanding of Fructose is that it is a simple cheap sugar. As so may foods have this fructose in it to give that food the AHH taste. As we grew up and couldn't stand our veggies, industry knew of a way to get the kids to eat something. Put sugar on it. Well that worked so well that industry decided to add fructose into everything because it sells ... follow the money and full speed ahead.
    So fast forward to now the stuff is so cheap industry puts it in everything so things sell including OJ some which have more sugar in it than soda. We ingest about 150 lbs per person per year in sugar and the science says our body can only metabolize around 60 lbs per year , wonder where the other 90 lbs go ?

    SO not good for us and it will take quite an effort to avoid it good luck.
  • Brenda RossBrenda Ross
    That is sort of like wheat - it is in almost everything as a thickener, except whole food. Its the only way to avoid. You have to make everything you eat from scratch, so your own salad dressing, sauces etc.... and of course eating whole food and like you said David - wonder where the other 90lbs go? - we already know that. We have a epidemic on our hands.
  • russGrussG

    Hearing two themes here.



    1. Glucose is better than fructose because it's more satisfying so you're less likely to grab that second soda-pop.

    2. Sugar has been added to everything in massive quantities because it's cheap and it sells, and the only way to avoid it is to avoid processed foods.



    I know very few people who would argue with point 2 - the only question is how far they are willing to stray from the processed foods diet, given the taste adjustment, cost increase, and inconvenience.



    Regarding point 1, is one isoform of C6H12O6 really going to be that much better than another that it's worth the investment of research grant money? Maybe, but the solution isn't going to be substituting one form of sugar for another; it's going to be switching from sugar-infused processed foods to healthier choices. I see this as a case of "obvious and simple solution exists but we don't like it so we're going to keep researching."



    I don't think a reasonable quantity of carbs consumed to fuel a workout, right before, during or within an hour of a major workout or race fall into this category. The exercise itself suppresses appetite in the short term ... I don't think it matters whether you fuel your workout with cytomax or apple juice as long as the quantity is appropriate.



    This opinion is based on my own sensibility, not a deep knowledge of metabolism, so take it with a grain of salt, but not sugar unless you're about to work out...

  • Joseph LombardiJoseph Lombardi

     All Bunk; 

    Fructose is naturally occuring in fruits...and also  not the same as High Fructose Corn Syrup (HFCS) testing the effect of pure Fructose  and its effect on the body are extremely different from that of high fructose corn syrup. Most studies conducted with pure fructose have been performed with abnormally high levels of fructose which do not occur naturally in our diet. Fructose and glucose are always consumed in combination, with glucose acting as a moderator to fructose. By analyzing fructose independently, the studies are not representative of normal diets and cannot be applied to high fructose corn syrup which contains both fructose and glucoseand other foods) ...

    The bottom line is that people have ingested too many calories....and yes processed food have too many easy calories do to th euse of HFCS (inexpsensive sweetener alternative used by food manufactures becasue of the globally controlled and artificially high cost of raw sugar..no other reason)....and of course lards/fats.

    There is no HFCS cabal....manufacturers of processed foods used it becuase consumer bought and consumed and demanded more...no other reason....

    Personally responsbility and control of food intake is the primary cause of the obesity epidemic...albeit aided and abetted by a too easy lifestyle and ready availablity of processed foods (but remember processed foods came about because of changing lifestyle, cultrue and consumer demand for them.!)

    ..follow the money? there is an entire cottage "nutrition" industry built on making you believe that the cause of your obesity or ailments is somethin other than your own behavior.

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