Here is the abstract from
http://www.ajcn.org/cgi/content/abstract/87/5/1254

This is the basic method:

"Ten healthy men underwent 4 trials in a randomized order.
They ingested caffeinated (5 mg/kg) coffee (CC) or the same
volume of decaffeinated coffee (DC) followed 1 h later by
either a high or low glycemic index (GI) cereal (providing
75 g of carbohydrate) mixed meal tolerance test."

To me, the relevance of ten non-diabetics eating 75gms of
carb, with or without coffee, is tenuous at best to our
situation. Further, ten subjects is hardly more than a pilot
study to see if further research is warranted.

I'll await that further research; in the interim I'll
continue to sip my good strong java in moderation and eat
breakfast with less than 5gms carb and conduct my own tests
for the results.

Caffeinated coffee consumption impairs blood glucose
homeostasis in response to high and low glycemic index meals
in healthy men 1,2,3

Lesley L Moisey, Sita Kacker, Andrea C Bickerton, Lindsay E
Robinson and Terry E Graham

1 From the Department of Human Health and Nutritional
Sciences, University of Guelph, Guelph, Ontario, Canada

Background: The ingestion of caffeine (5 mg/kg body weight)
and a 75-g oral glucose load has been shown to elicit an
acute insulin–insensitive environment in healthy and obese
individuals and in those with type 2 diabetes.

Objective: In this study we investigated whether a similar
impairment in blood glucose management exists when coffee
and foods typical of a Western diet were used in a similar
protocol.

Design: Ten healthy men underwent 4 trials in a randomized
order. They ingested caffeinated (5 mg/kg) coffee (CC) or
the same volume of decaffeinated coffee (DC) followed 1 h
later by either a high or low glycemic index (GI) cereal
(providing 75 g of carbohydrate) mixed meal tolerance test.

Results: CC with the high GI meal resulted in 147%, 29%, and
40% greater areas under the curve for glucose (P < 0.001),
insulin (NS), and C-peptide (P < 0.001), respectively,
compared with the values for DC. Similarly, with the low GI
treatment, CC elicited 216%, 44%, and 36% greater areas
under the curve for glucose (P < 0.001), insulin (P < 0.01),
and C-peptide (P < 0.01), respectively. Insulin sensitivity
was significantly reduced (40%) with the high GI treatment
after CC was ingested compared with DC; with the low GI
treatment, CC ingestion resulted in a 29% decrease in
insulin sensitivity, although this difference was not
significant.

Conclusion: The ingestion of CC with either a high or low GI
meal significantly impairs acute blood glucose management
and insulin sensitivity compared with ingestion of DC.
Future investigations are warranted to determine whether CC
is a risk factor for insulin resistance.

Cheers, Alan, T2, Australia.
d&e, metformin 1500mg, ezetrol 10mg
Everything in Moderation - Except Laughter.
--
http://loraldiabetes.blogspot.com
Latest:What to Eat Until You Get Your Meter.

Angkor Wat
http://loraltravel.blogspot.com

An article, or study for that matter, wouldn't be enough to make me
change my habits. I'd have to test myself to see what's happening.

I eat very low carb breakfasts of 6g carb or less and then drink 1 cup
of strong regular coffee about an hour later when I get to work. I
even put about a quarter teaspoon of (gasp!) sugar in it. I've tested
this repeatedly and have never noticed a spike.

On days when I'm off work, I do this routine the other way around. I
usually have the coffee first and breakfast a bit later. Again, I've
tested this and haven't noticed any spikes.

John C.