'Quest' low 'net carb' bars tested... - Page 2

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'Quest' low 'net carb' bars tested... - Page 2


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Old 11-08-2011, 13:26   #11
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I tested out quest bars on myself and was disappointed with the 30pt spike in just 1 hour. I don't think that protein is converted THAT quickly into glucose, also only a portion of the protein would be converted in general and even then only a percentage of the protein comes out as glucose through gluconeogenesis.

I think there are 2 issues with the bars. One is that they use Splenda and as many of us know that does have a BG impact. They are working on a version using Stevia but it's not out yet.

The other issue is the type of fiber (Isomalto-Oligosaccharide) which they say is "almost identical" to chicory root. Just looking at the name, "-saccharide" I bet much more of that is converted to glucose than you would think under the benign category of "fiber". Not all fiber is created equal! That is why net carbs can get you into trouble at times.

They sure do taste good though!

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Old 11-08-2011, 13:46   #12
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Granulated splenda has maltodextrin added, to bulk it up. This should be incorporated in the labeling.

I think it is simply the ^%@#$~! fiber! BTW, a 30-pt spike is NOTHING compared to what I got -- I think I went > 200! so more like a 90 pt spike.

ETA, all cellulose fiber is just polymers of glucose. As are all starches. So saccharo- anything would be no surprise there. There are straight-chain and branched-chain polysaccharides. The question is whether and how rapidly our bodies can split the glucoses apart, which depends on our unique enzyme profiles, and just how those glucoses are bonded together. Some people are super-starch splitters -- and I think I am one!

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Old 11-09-2011, 01:30   #13
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BTW, a 30-pt spike is NOTHING compared to what I got -- I think I went > 200! so more like a 90 pt spike.
I was wondering if you had tried it. The first ingredient is a mix of whey and milk protein isolates which I thought you had posted about earlier and how they had such unexpected effects on your BG. I'm not surprised that you spiked like crazy on it.

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Old 11-19-2011, 20:52   #14
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As a prediabetic, one Quest bar only produces about a 10 mg/dl increase in BG, and it takes quite a while (over 1 hour) for that to occur. Other protein bars with more net carbs create much larger increases. (Also note that apparently the mother of the owner of the company is diabetic, and they have tested the bars on her.)

Note first that the much of the protein in the bar is of the type (unlike that in nuts or meat, for example) that is quickly digestible, meaning the it passes quickly through one's stomach and will have a big effect on BG if one is highly insulin resistant and prone to gluconeogenesis (conversion of protein to glucose). This is true for most diabetics, but not for most prediabetics, like myself. Also note that, contrary to what is shown in the video, one needs to account for protein in food when calculating insulin needs (see Bernstein's discussion).

Second, note that not all fiber is alike, and it is likely that some of the "fiber" in the bar is in fact digestible. The combination then of some carbs from the "fiber", plus a lot of easily digestible protein, plus subjects that have high insulin resistance (note the high starting BG of many of those reporting - often an indication of a high rate of gluconeogenesis), makes it not that surprising to see a large BG jump in some people after consumption of a Quest bar.

So, it is probably misleading to put the blame on "fiber", although certainly true that you have to test these things to determine their impact, and can't just rely on net carbs.

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Old 11-20-2011, 22:21   #15
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Welcome aboard, warner. The crux of the issue is that all pre-diabetics are not alike, and all micro-nutrients are not alike either, in the way they affect individual people. The biggest thing you need to remember is YMMV - your mileage may vary. There are a few of us here who could conceivably digest sawdust, we're that good at converting "indigestible" components.

Please continue to give us the benefit of your experience & knowledge, but please don't rely on sweeping global statements which may or may not apply to the rest of us. We've been at this long enough to know that one size does NOT fit all.




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Old 11-20-2011, 23:05   #16
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My offer stands -- I have a whole case, minus one bar if you will pay shipping ...

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Old 11-21-2011, 03:45   #17
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please don't rely on sweeping global statements which may or may not apply to the rest of us. We've been at this long enough to know that one size does NOT fit all.
An unfortunate and inaccurate characterization (the entire post is about one size does not fit all). You should have addressed the content, not the tone. Probably best if I just leave you guys in peace and stop posting. Best of luck with the forum.

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Old 03-04-2012, 13:56   #18
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Thank you for these comments about the Quest Bar test we did in Boulder. -- Shelley

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Old 03-04-2012, 14:05   #19
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Thank you for these comments about the Quest Bar test we did in Boulder. -- Shelley
What a coincidence, Shelly! I just started a new thread about your recent interview with Ron from Quest. I love your site and that your group tests out different foods, sharing the results. Keep up the good work!

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Old 03-04-2012, 14:17   #20
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Thanks, Daytona, and I appreciate the logic and clarity you're bringing to this as well! These issues regarding citizen tests of food products that are advertised one way (sometimes even researched by scientists one way!), but work in our bodies another way are important to all of us, and I'm glad you think so, too.

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