Caffeine and your Blood Sugar?

By US331242 Latest Reply 2009-10-10 11:10:38 -0500
Started 2009-10-07 12:51:39 -0500

I was in a discussion with another person on this site and he wasn't aware of the caffeine studies on blood sugars. He stated there were many discussion on blood sugars spiking after drinking diet soda. So I thought I'd share the studies on the effects of caffeine.

The Quick Overview is:caffeine affects metabolizing glucose. If you eat carbs with a diet soda, coffee, tea, or other caffeinated beverage, your blood sugars will stay elevated. If you drink a diet soda with caffeine your blood sugars will spike. Controlling blood sugars is much harder if you are a caffeine drinker.

The studies (2004) were done at Duke University by Dr. Lane. I had the privilege of reading the entire study back in 2004 and it was fascinating.

I searched Google using "caffeine blood sugar study". there are a lot of results but here are some key ones:
1)WebMD —
2)Rueters —
4)CBS News —

7 replies

lipsie 2009-10-10 11:10:38 -0500 Report

Thanks for your information. Yeah, I have also read both ways…I think it varies person to person. But in all honesty caffeine in not the best for anyone anyhow so IF you could eliminate great…for me nahhh I am coffee and soda drinker, at least for this moment in time…but really thank you! Hugs! Sheila

Turtle 2009-10-10 03:28:25 -0500 Report

I found this discussion interesting when I read it the first time and I was happy to see it again. I really made an effort to cut back my caffeine intake after reading 1st time. It did not seem to make much difference. Then I wondered, could it also be what we add to it?


donnadee 2009-10-10 10:33:17 -0500 Report

That's what I'm thinking. I'm wondering if it's the caffeine or the artificial sweetners. It's hard for me to even type this…but I think it's my splenda. No carbs, no splenda, low fat, high fiber…I guess I should just sit down and eat a paper plate (recycled paper of course) and no salt! I have HBP also. ugh!!!!

kdroberts 2009-10-07 14:09:51 -0500 Report

It's interesting because there are just as many studies out there that show that drinking caffeine has no effect on blood sugar or actually lowers it. It really is a very individual thing, I've experimented with it and found that coffee doesn't make any difference in my blood sugar but some people have a lot of trouble with it. The theory why it would raise blood sugar makes sense but the body is a strange thing.

US331242 2009-10-08 15:19:04 -0500 Report

With all the body types out there, I don't doubt there are exceptions.

I love my caffeine kicker in the AM & PM! When I switched from pills to insulin, I had major fluctuation in my readings and had difficulty getting a grip on it. I wrote down everything and in analyzing it my bottle of diet pop in the afternoon was what was causing my numbers to not go down. The Duke University studies backed my experience. Now I know if I'm going to have coffee in the morning or diet soda (both with caffeine), then I need to cut the carbs or boost my insulin.

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