Coffee Reduces Risk of
Diabetes - Decaffeinated Form Cuts Chance of Type-2 By 33 Percent
June 27th 2006
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6 Cups of Coffee
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Researchers from the University Of Minnesota School Of Public Health say
that drinking coffee may reduce the risk of developing type-2 diabetes
by up to 33 percent compared to women who don’t drink coffee. The
researchers used 28,812 postmenopausal women who did not have type-2
diabetes or cardiovascular disease as part of the Iowa Women's Health
Study (1986-1997) to evaluate the risk.
Over the 11 year period, 1,418 women reported being diagnosed with the
disease. The researchers then looked at the coffee intake. Of the
28,812 women, about half (14,224) drank one to three cups of coffee per
day; 2,875 drank more than six cups; 5,554 four to five cups; 3,231 less
than one cup; and 2,928 none.
The researchers took into account other risk factors and found that
women who drank more than six cups of any type of coffee (caffeinated or
decaffeinated) per day were 22 percent less likely than those who drank
no coffee to be diagnosed with diabetes. The women who drank more than
six cups of decaffeinated coffee per day had a 33 percent reduction in
risk compared with those who drank none.
Mark Pereira PhD said “The risk reduction associated with coffee is
independent of factors such as weight and physical activity. There
appears to be great potential for coffee to help reduce the risk of
diabetes. Identifying the mechanism responsible for this should
definitely be the subject of further research." Mark Pereira was the
study lead author and associate professor at the University Of Minnesota
School Of Public Health.
It is not completely clear what the relationship is, but the researchers
say that caffeine intake did not appear to be related to diabetes risk.
This suggests that some other ingredient in coffee was responsible.
The researchers said that “Magnesium, for which coffee is a good source,
could explain some of the inverse association between coffee intake and
risk of type 2 diabetes mellitus through known beneficial effects on
carbohydrate metabolism.”
It is possible that the other minerals and nutrients found in coffee
contribute to the protection. These compounds include polyphenols that
have also been shown to help the body process carbohydrates and
antioxidants that may protect cells in the insulin-producing pancreas.
Pereira says "Having a healthy diet, controlling your weight, and
exercising are essential to preventing the onset of diabetes, but
drinking coffee has the potential to further reduce risk of diabetes. It
may be necessary to rethink the idea that drinking coffee does more harm
than good."
High coffee intake has already been associated with lower body mass
index (BMI) and rates of hypertension, as well as increased rates of
alcohol consumption and smoking. Interestingly, women who drank more
coffee also ate less fruit and low-fat dairy products.
Over 20 million Americans have diabetes, with 6.2 million of those cases
being undiagnosed. People who have the illness either do not produce
enough insulin for the body to process sugar or their cells ignore the
insulin that is produced.
The research is published in the June 26, 2006 issue of Archives of
Internal Medicine.
Dan Wilson
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