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Caffeine Interferes With
Diabetes Control
posted August 5, 2004
Caffeine could interfere with the
body's ability to handle blood sugar, thus worsening type 2 diabetes.
The team at Duke University Medical Center in North Carolina found a strong
correlation between caffeine intake at mealtime and increased glucose and
insulin levels among people with type 2 diabetes.
The findings are significant enough that the researchers recommend people with
diabetes consider reducing or eliminating caffeine from their diets.
"In a healthy person, glucose is metabolized within an hour or so after eating.
Diabetics, however, do not metabolize glucose as efficiently," said James Lane,
a psychiatry professor who led the study.
"It appears that diabetics who consume caffeine are likely having a harder time
regulating their insulin and glucose levels than those who don't take caffeine."
Writing in the journal Diabetes Care, Lane and colleagues said they studied 14
habitual coffee drinkers with type 2 diabetes.
The researchers put the volunteers on a controlled diet.
They took their medications, had their blood tested and then were given caffeine
capsules. More blood was taken then and after giving the volunteers a liquid
meal supplement. Caffeine had little effect on glucose and insulin levels when
the volunteers fasted, the researchers found.
But after the liquid meal, those who were given caffeine had a 21 percent
increase in their glucose level and insulin rose 48 percent.
Although they found that caffeine did not affect fasting levels of blood glucose
or insulin in comparison to placebo, they did find significant effects on both
following a meal. The meal, in this case, was the commercial liquid meal
supplement known as Boost®.
"In a healthy person, glucose is metabolized within an hour or so after eating.
Diabetics, however, do not metabolize glucose as efficiently," said James D.
Lane, Ph.D., associate research professor in the department of psychiatry and
behavioral sciences at Duke, and lead author of the study. "It appears that
diabetics who consume caffeine are likely having a harder time regulating their
insulin and glucose levels than those who don't take caffeine."
] "It seems that caffeine, by further impairing the metabolism of meals, is something diabetics ought to consider avoiding. Some people already watch their diet and exercise regularly. Avoiding caffeine might be another way to better manage their disease. In fact, it's possible that staying away from caffeine could provide bigger benefits altogether."
Source: Diabetes In Control.com: Diabetes Care:
August 2004.August 2004 News Article Index
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