Blueberries May Help Improve Insulin Sensitivity, Pennington Biomedical Research Center Study Published: Sep 20, 2010 WebMD -- Sept. 17, 2010 -- Drinking blueberry smoothies helped obese adults who were pre-diabetic improve insulin sensitivity, researchers report. Related links News Release This will open in a new window WebMD This will open in a new window Email this Facebook Twitter LinkedIn Pinterest Reddit Back to news