The researchers found that obese participants who consumed smoothies containing mostly blueberries twice a day for 42 consecutive days experienced an increase in insulin sensitivity compared to those who consumed fruit smoothies which did not contain blueberries twice a day for the same period of time.
At the beginning of the study none of the participants had diabetes, but certain compounds present in the blueberries seemed to regulate the obesity related insulin factors which can lead to diabetes.
An additional study from Oklahoma State University (OSU) which has been published in The Journal of Nutrition has found that drinking one drink per day for eight weeks containing two cups of blended blueberries, helped to significantly reduce hypertension levels by around seven to eight points.
Arpita Basu, professor of nutritional sciences at OSU and author of the study said, “Many patients rely too heavily on medication to help control blood glucose,” explained Basu. “A diet that includes blueberries is a component of a healthier lifestyle that also includes diet and exercise.”