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another coffee question
- Thread starter princess
- Start date
Probably because caffeine causes an increase in plasma epinephrine and that cause increased hepatic output of glucose, reduced hepatic sensitivity to insulin and peripheral insulin resistance.
If you're type II diabetic I might think about it, otherwise I personally don't worry about the effect and it is likely wiped out to a large degree during exercise.
Author
Graham, T E; Sathasivam, P; Rowland, M; Marko, N; Greer, F; Battram, D
Title
Caffeine ingestion elevates plasma insulin response in humans during an oral glucose tolerance test.
Appears In
CANADIAN JOURNAL OF PHYSIOLOGY AND PHARMACOLOGY. vol. 79, no. 7 (2001 Jul): 559-65.
Abstract
We tested the hypothesis that caffeine ingestion results in an exaggerated response in blood glucose and (or) insulin during an oral glucose tolerance test (OGTT). Young, fit adult males (n = 18) underwent 2 OGTT. The subjects ingested caffeine (5 mg/kg) or placebo (double blind) and 1 h later ingested 75 g of dextrose. There were no differences between the fasted levels of serum insulin, C peptide, blood glucose, or lactate and there were no differences within or between trials in these measures prior to the OGTT. Following the OGTT, all of these parameters increased (P < or = 0.05) for the duration of the OGTT. Caffeine ingestion resulted in an increase (P < or = 0.05) in serum fatty acids, glycerol, and plasma epinephrine prior to the OGTT. During the OGTT, these parameters decreased to match those of the placebo trial. In the caffeine trial the serum insulin and C peptide concentrations were significantly greater (P < or = 0.001) than for placebo for the last 90 min of the OGTT and the area under the curve (AUC) for both measures were 60 and 37% greater (P < or = 0.001), respectively. This prolonged, increased elevation in insulin did not result in a lower blood glucose level; in fact, the AUC for blood glucose was 24% greater (P = 0.20) in the caffeine treatment group. The data support our hypothesis that caffeine ingestion results in a greater increase in insulin concentration during an OGTT. This, together with a trend towards a greater rather than a more modest response in blood glucose, suggests that caffeine ingestion may have resulted in insulin resistance.
If you're type II diabetic I might think about it, otherwise I personally don't worry about the effect and it is likely wiped out to a large degree during exercise.
Author
Graham, T E; Sathasivam, P; Rowland, M; Marko, N; Greer, F; Battram, D
Title
Caffeine ingestion elevates plasma insulin response in humans during an oral glucose tolerance test.
Appears In
CANADIAN JOURNAL OF PHYSIOLOGY AND PHARMACOLOGY. vol. 79, no. 7 (2001 Jul): 559-65.
Abstract
We tested the hypothesis that caffeine ingestion results in an exaggerated response in blood glucose and (or) insulin during an oral glucose tolerance test (OGTT). Young, fit adult males (n = 18) underwent 2 OGTT. The subjects ingested caffeine (5 mg/kg) or placebo (double blind) and 1 h later ingested 75 g of dextrose. There were no differences between the fasted levels of serum insulin, C peptide, blood glucose, or lactate and there were no differences within or between trials in these measures prior to the OGTT. Following the OGTT, all of these parameters increased (P < or = 0.05) for the duration of the OGTT. Caffeine ingestion resulted in an increase (P < or = 0.05) in serum fatty acids, glycerol, and plasma epinephrine prior to the OGTT. During the OGTT, these parameters decreased to match those of the placebo trial. In the caffeine trial the serum insulin and C peptide concentrations were significantly greater (P < or = 0.001) than for placebo for the last 90 min of the OGTT and the area under the curve (AUC) for both measures were 60 and 37% greater (P < or = 0.001), respectively. This prolonged, increased elevation in insulin did not result in a lower blood glucose level; in fact, the AUC for blood glucose was 24% greater (P = 0.20) in the caffeine treatment group. The data support our hypothesis that caffeine ingestion results in a greater increase in insulin concentration during an OGTT. This, together with a trend towards a greater rather than a more modest response in blood glucose, suggests that caffeine ingestion may have resulted in insulin resistance.
"If you're type II diabetic I might think about it, otherwise I personally don't worry about the effect and it is likely wiped
out to a large degree during exercise. "
This is 100% on the mark in my opinion. I go one step further and have my coffee on an empty stomach. and make sure I don't have it with or anywhere near high GI carbs. So I would avoid coffee + donuts, but coffee by itself before exercise is all good!
out to a large degree during exercise. "
This is 100% on the mark in my opinion. I go one step further and have my coffee on an empty stomach. and make sure I don't have it with or anywhere near high GI carbs. So I would avoid coffee + donuts, but coffee by itself before exercise is all good!
CrystalChick
New member
Just a question... I heard coffee will increase cortosol levels.
How true is this?
Thanks CC
How true is this?
Thanks CC
Anything that increases fat-burning (including thermogenics, low cal or low carb diets, exercise etc...) will also increase cortisol levels while decreasing glucose sensitivity. It's no big deal as long as you don't abuse it. BTW, I don't actually recommend you eat donuts at all, with or without the coffee. It's not the coffee that damages health, it's the high sugar/high sat fat food that people eat WITH the coffee.
circusgirl
New member
mmmm coffeeeeeeee..... (homer simpson voice...)
Guess I'll just have to drink wine with it.SouthernBell
New member
Ok 
one of those crazy questions I think I have read some where. Isn't coffee a diuritec? So if I am trying to shed some water retention is it ok to have some with splenda and skim milk?
one of those crazy questions I think I have read some where. Isn't coffee a diuritec? So if I am trying to shed some water retention is it ok to have some with splenda and skim milk?Similar threads
