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Re: [IP] morning rises/coffee
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In a message dated 8/24/02 7:03:55 PM US Eastern Standard Time,
email @ redacted writes:
<< I've seen lots of comments on people's b.g. rising when they drink coffee
I was just wondering, does that apply to decaf coffee as well as that's all
Any other decaf drinkers out there that this happens to?
Research has been done on caffeine -- not coffee, but caffeine. This is what
I found in my May Diabetes Interview folder (not the final edit): Jan and
Caffeine, a component of many popular dietary sources such as coffee,
tea, colas and chocolate, decreases insulin sensitivity by 15 percent in
people without diabetes, say researchers in the Netherlands. The doctors,
who conducted a small test group study, published their findings in the
February issue of Diabetes Care.
Researchers from the University Medical Center in Nijmegen injected
doses of caffeine equal to moderate consumption into 12 healthy individuals
and a placebo substance in 10 individuals after they had abstained from
caffeine for 72 hours.
The decrease in insulin sensitivity documented during the caffeine trial
neared the increase in insulin sensitivity that can be achieved by taking
oral insulin-sensitizing agents, researchers said. In addition, the caffeine
group had higher blood levels of free fatty acids and increased levels of the
hormone adrenalin, which causes the liver to release glucose and limits the
release of insulin.
The increase of adrenalin may be causing the decrease in insulin
sensitivity, researchers say. They point out that further studies need to be
made to determine if the decreased insulin sensitivity continues over time
with chronic use of caffeine. Because it's unknown if tolerances develop with
long-term ingestion of caffeine, they add, it's premature to advise against
caffeine use to manage insulin resistance.
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