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Thursday, July, 24, 2008

Glycemic Coffee

by  David Mendosa
Sunday, December 23, 2007
David Mendosa
David Mendosa
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Medical journalist living with diabetes

After earning a B.A. with honors from the University of California,...

David Mendosa

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Ever since I discovered the glycemic index a dozen years ago, I thought that I knew that anything we eat or drink has to have calories for it to raise our blood glucose levels. In fact, those calories have to come from carbohy...
  1. Coffee
    Gretchen Becker
    Monday, December 24, 2007 at 09:02 AM

    I think coffee triggers the release of adrenaline, which is a counterregulatory hormone and increases insulin resistance. This is what causes "coffee jitters" in some people.

     

    As a result of the adrenaline, the liver pumps some glucose into the blood, and this is one reason we get a "lift" from coffee.

     

    Note that the research said that coffee elevates BGs when taken "before a high-carb meal." Another obvious solution is to stop eating high-carb meals. 


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  2. Coffee substitutes
    Gretchen Becker
    Monday, December 24, 2007 at 09:08 AM

    I've been seeking a substitute for coffee since the 1970s, when I was drinking about 16 cups a day, which didn't seem to keep me from getting diabetes.

     

    I haven't found anything that works for me. Tea is insipid, and who knows how safe a lot of the herbal teas are. I had two friends who were into herbal teas, and they both died of cancer. Doesn't prove anything, but there's no control over the ingredients in herbal teas, many of which contain ingredients designed for short-term use in illness, not for everyday drinking.

     

    Coffee and regular tea, on the other hand, have been used for centuries.

     

    One drink that I sometimes tolerate is ginger: Add a slice of fresh ginger to boiling water and steep. Good with a little added lime juice too.

     

    But coffee also has oils that give a smoothness to the drink. I tried adding a bit of hazelnut oil to the ginger tea, and this was nice.

     

    But I always find myself going back to the coffee. It's good both hot and cold and I like its "bite" 


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    re: Coffee substitutes
    verdungal
    Wednesday, December 26, 2007 at 12:48 PM

    Gretchen, have you ever tried  soluble Chicory made by Leroux in  France?

    Verdungal


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    re: re: Coffee substitutes
    Gretchen Becker
    Wednesday, December 26, 2007 at 02:27 PM
    No. I drink my coffee black, no sweetener, so I've always found the coffee substitutes to be vile. Also don't like decaf.
    reply
  3. Glycemic Coffee
    Florian
    Wednesday, December 26, 2007 at 08:17 AM

    I've read a few posts recently where PWD have said that their blood sugar goes up when they drink black coffee with nothing in it in the morning. I have noticed the same thing for sometime now and I recently switched to decaf just to see if it would have any effect on my blood pressure. My blood pressure didn't changed but my blood sugar still goes up. Maybe it also has something to do with the "dawn phenomenon," since in most cases coffee is consumed in the morning.

     

    My solution has been to take a 2 unit combo bolus 70:30 over a 2 hr period in the morning while I drink my coffee, read the newspaper, check my email, and watch the early AM business news. It works for me.

     

    Florian (Type 1, dx 1967)

    Animas 2020 + Apidra


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    re: Glycemic Coffee
    David Mendosa
    Wednesday, December 26, 2007 at 10:09 AM

    Dear Florian,

     

    Experimenting with decaf is a most interesting idea that the researchers don't seem to have gotten around to yet. Thanks for sharing your experience. 


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    re: re: Glycemic Coffee
    elegiamore@mindspring.com
    Thursday, December 27, 2007 at 03:59 PM

    Mr. Mendosa,

     

    So would you recommend switching to decaf?  We have already noticed that Dr. Atkins strongly cautioned use of coffee as an insulin increaser in his literature.

     

    Is there any evidence that caffeine itself is the culprit - meaning that caffeine diet soda would have similar results?

     

    Thanks for your thoughts.

     

    Elegiamore 


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    re: re: re: Glycemic Coffee
    David Mendosa
    Thursday, December 27, 2007 at 04:26 PM

    Dear Elegiamore,

     

    Actually, no, I wouldn't recommend switching to decaf. The studies apparently did not consider decaf coffee. And one comment above indicates that one correspondent found that decaf didn't help. 


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  4. Glycemic Coffee
    RCScherler
    Thursday, December 27, 2007 at 09:31 PM
    Did I understand this article right?  It's the caffeine in the coffee that causes the problem?  In that case, does drinking de-caf coffee eliminate the problem?
    reply
    re: Glycemic Coffee
    David Mendosa
    Thursday, December 27, 2007 at 10:28 PM
    Yes, that's what the researchers at Duke think. But they apparently did not compare the effects of regular and decaf coffee. And several people have commented that decaf coffee is the same effect.
    reply
  5. Celiac
    Mark R
    Friday, December 28, 2007 at 02:49 AM

    I have been a Type 1 for 26 years, I wear a pump,and my A1C is 6.4. A few days ago I found out I have celiac. Given the fact that I have other complications from my diabetes, I will learn to live with celiac too. However, no way will I give up my coffee.


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  6. Confirmed for me...
    Barry C
    Saturday, December 29, 2007 at 11:02 PM

    Spooky timing.  Over the last 2 weeks I tested the effect of coffee on my blood sugars and in my case, I've seen a 10ish point across the board reduction in my readings.  Ordinarily I would consume decaf coffee after each meal.

     

    I've been a low-carb dieter for many years and have been a bit frustrated that over the last year or so my morning numbers have been just over 100 (FYI:  I follow Dr. Bernstein's solution, which lowered my A1Cs from an all time high of 10 to the 4-5 range).  I've been blaming dawn phenomenon (cinnamon didn't help in my case).

     

    For some reason this Holiday season, I wondered if coffee could be causing my slighted higher results.  I normally test more aggressively over the holidays, so I decided to eliminate coffee and see if it made a difference.  My recollection is that I started my coffee habit a year or so ago.  Prior to that I didn't drink coffee at all.  

     

    After eliminating coffee, my fasting BG's are in the 90s and I'm under a 100 within 3 hours after eating with a peak typically under 130.  I've kept myself coffee-free for 2 weeks now so in my personal case I'm pretty convinced that coffee raises my BGs.  Even though I hate the idea, coffee is now off of the menu for me.

     

    Any non-diabetics out there want to buy a nice espresso machine!  ;)

     

    All the best, Barry C.

    Type II, 1,500/day Metformin,

    20-40 carbs/day


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    re: Confirmed for me...
    David Mendosa
    Saturday, December 29, 2007 at 11:28 PM

    Dear Barry,

     

    Most interesting! You confirm several other comments that it is not the caffeine in coffee that causes the BG increase. But I had been wondering if it might have been operative only in the presence of a high carb level. That you were drinking decaf coffee on a low-carb diet blows that theory of mine out of the water! So even when you are on a low-carb diet and drink decaf coffee it will raise your BG! Thanks for sharing your story.

     

    David 


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    re: re: Confirmed for me...
    Barry C
    Saturday, December 29, 2007 at 11:43 PM

    I had been drinking quite a bit of coffee (at least 8oz three times a day).  As I understand it, decaf is not completely free of caffeine, so perhaps the caffeine is to blame - don't know.

     

    Do you know what the caffeined coffee drinkers in the study were compared to?  I noticed that the title of the study implicates caffeine.  How did the researchers make that conclusion?  Was the comparator group drinking decaf coffee?


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    re: re: re: Confirmed for me...
    David Mendosa
    Saturday, December 29, 2007 at 11:59 PM

    Barry,

     

    Yes, I have the study before me. They compared a moderate dose of caffeine (500 mg/day) with a placebo control. Both groups got identical gelatin capsules. One had the caffeine plus a dextrose filler and the other had dextrose alone.

     

    David 


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    re: Confirmed for me...
    Barry C
    Sunday, December 30, 2007 at 02:47 PM

    Thanks David.  I didn't realize that coffee wasn't a part of the study.  I doubt that my total caffeine intake approached 500mg/day.  There are so many variables it can be really hard to discern cause and effect.  Perhaps in my case cream and artifical sweetner played a role, or perhaps my BG's have been better during the past two weeeks because I've been on vacation with less stress.  Maybe I should keep the coffee and give up work!  :))

     

    Best wishes for a healthy new year!

     

    Barry C


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  7. Coffee
    BARMIL
    Wednesday, January 02, 2008 at 04:29 PM
    I wouldn't be so quick to condemn coffee. The study has people drink coffee alone. I take coffee after I eat my first meal and my blood sugar is slightly lower than when I wake up, usually in the 70's, 80's of 90's. I think it is better to drink coffee once you are up and about, rather than the first thing. It may be different for each person, so you need to test yourself to see if your blood sugar actually goes up.
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  8. This may explain ...
    Chris van Z
    Thursday, January 03, 2008 at 07:54 AM
    the remark that my Winglucograf software has shown me ever since I used it. Something like 'your average readings are lower during weekends'. Always wondered whether it was shopping for groceries (saturdays only), sleeping late (sat/sun) or just not working that helped me to better numbers on WE's. A typical weekend morning will have me take 2 cups on startup, and 2 after diner. A typical weekday (workday) will see me down a multitude... Will be doing some testing.
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  9. So what?
    Eric
    Thursday, January 03, 2008 at 09:11 AM

    I mean, as a diabetic, I've been told I have to fear everything I eat, everything I touch, everything within a 500ft. radius that may or may not affect my BG levels. Why should I worry about every little thing all the time?

     

    While I agree that gorging on pizza & chili-cheese fries every day is certainly bad, am I going to run screaming into the night every time I down a couple of iced Cafe Americanos at my local coffee shop? Heck no! Life's too short to worry about every piddly 10 point spike in a BG reading.

     

    We can spend all of our time afraid of food and drink, denying ourselves even a small moment of joy, or we sneak the occasional Hershey's Kiss, or enjoy our Cuppa Joe without fretting about it. 

     

    Besides, one study is far from conclusive evidence anyway. I say it's hardly worth the bother. 


    reply

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