Green (unroasted) coffee extract seems to reduce swings in blood sugar in healthy people, and might offer some benefit to those at risk for type 2 diabetes. The research is still preliminary, though, since it included only 30 individuals who were of normal weight, without diabetes.

The green coffee extract lowered their blood sugar responses in a glucose tolerance test, with higher doses exerting more effect. Previous epidemiological studies have suggested that coffee consumption is associated with a lower risk of developing type 2 diabetes, while a small study published in 2012 suggested that green coffee extract might be helpful in weight loss.

[American Chemical Society in New Orleans, April 9, 2013]

The possibility that green coffee extract would help prevent a post-meal rise in blood sugar is made more plausible by the fact that cinnamon, nopal cactus leaves and vinegar can all help prevent such a rise.

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  1. Alys M

    My recent experience with green coffee bean capsules was not pleasant. I experienced a rapid drop in blood sugar, nausea and sudden fatigue. I think I will just stick to my tried and true method of weight management – stay on a healthy but reduced caloric intake and up amount of l the walking. Had been bored with my slow weight reduction and wanted to (hopefully) kick it up a notch. Patience has never been my long suit.

  2. Mariellen G.

    If you have a tendency to mood swings, don’t touch the coffee solution to blood sugar with a ten foot pole. I tried the green coffee for a few months, with lots more extreme mood swings. Emotional roller coaster. Stopped the coffee; moods settled down within a couple days.

  3. Martin P.

    I have a few friends (who have type 2 diabetes) and they tried green coffee extract. While many sources tell that the extract only helps on some people with high blood sugar problems, they were quite optimistic about the matter. Although it was not as effective as cinnamon, they did notice some drops in their glucose levels.
    I really think that more effort should be put into researching the effects of green coffee over diabetes. It could potentially lead to creating new products for people who don’t like cinnamon.

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