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Clues to why coffee fights off diabetes

Coffee mystery solved?

It’s been a very busy few days. And that means one thing.

Lots of coffee.

There are benefits to that, though. A little over a year ago I told you about the Australian study that showed a 7 percent reduction in diabetes risk for every daily cup of coffee.

So each morning, as I fill up the first of several daily cups, I think to myself, “Well, I guess I’m getting plenty of diabetes protection today.”

(And if I were a man, there’d be one more: a lower risk of prostate cancer.)

Until now, scientists haven’t known why coffee has the effect it does on diabetes risk. A new report in ACS’ Journal of Agricultural & Food Chemistry gets to the bottom of the mystery.

The report explains that people who drink four or more cups of coffee per day have a 50 percent lower risk of developing type 2 diabetes than people who don’t partake. And like I said, every additional cup tacks on another approximately 7 percent decrease in risk.

Coffee’s power against type 2 diabetes could lie in its effect on a substance called human islet amyloid polypeptide (hIAPP). The “misfolding” of this substance is linked to the development of diabetes, which got some scientists thinking: Does coffee do anything to block hIAPP?


In fact, there are two categories of compounds in coffee that freeze hIAPP in its misfolding tracks. Thus, the benefit enjoyed by regular drinkers of coffee.

So now I don’t feel so bad that I’m on my 3rd cup and it’s not even noon.

P.S. Looking for other proven ways to ward off diabetes? Look no further. Click here to learn about 10 ways you could stop diabetes in its tracks.

“Why Coffee Drinking Reduces the Risk of Type 2 Diabetes,” Science Daily (