Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Diabetes Health Center

Font Size

Can Coffee Bean Extract Help Control Blood Sugar?

Small study suggests supplement might help, but diabetes expert is skeptical

WebMD News from HealthDay

By Maureen Salamon

HealthDay Reporter

TUESDAY, April 9 (HealthDay News) -- A natural extract from unroasted coffee beans may be a tool in fighting the uncontrolled blood sugar levels characteristic of diabetes, a small, preliminary new study suggests.

Research done in India on normal-weight participants with normal blood glucose (or blood sugar) levels found that various doses of supplements containing green coffee extract all lowered blood sugar, with higher doses associated with larger drops.

"If this can influence a normal person's [glucose levels], then it should be even better for diabetics because they have a problem," said study author Joe Vinson, a professor of chemistry at the University of Scranton, in Pennsylvania. "The green coffee [extract] is the best aspect of coffee to be taken, I think."

The study was funded by Applied Foods of Austin, Texas, manufacturers of the green coffee extract.

Vinson was scheduled to present the research, done in India, on Tuesday at a meeting of the American Chemical Society in New Orleans. Studies presented at scientific conferences are typically not yet peer-reviewed and results are considered preliminary.

About 26 million Americans have type 2 diabetes, which is the most common form, according to the U.S. Centers for Disease Control and Prevention. Diabetes is linked to conditions including heart disease, blindness, kidney failure and lower-leg amputations.

A great deal of research has examined the potential health benefits of coffee. A much-touted 2012 study in the New England Journal of Medicine suggested that death rates fell with each additional cup consumed daily. Meanwhile, a 2009 Archives of Internal Medicine review of 18 studies involving more than 457,000 people indicated that each additional daily cup of coffee was associated with a 7 percent drop in the relative risk of developing type 2 diabetes.

The studies did not prove that coffee caused these health effects, but merely that an association existed.

Vinson's study analyzed 30 men and women of normal weight who did not have diabetes. They took supplements containing between 100 milligrams (mg) and 400 mg of the green coffee extract in a capsule with water, followed by glucose tolerance tests at several points afterward.

Today on WebMD

Diabetic tools
Symptoms, diagnosis, treatment, and more.
woman flexing muscles
10 strength training exercises.
Blood sugar test
12 practical tips.
Tom Hanks
Stars living with type 1 or type 2.
kenneth fujioka, md
Can Vinegar Treat Diabetes
Middle aged person
Home Healthcare

Prediabetes How to Prevent Type 2 Diabetes
type 2 diabetes
food fitness planner