This herb has been Blood sugar formula shown to lower blood sugar when consumed on a daily basis. Blueberry Leaf can also stop damage to the blood vessels, which is sometimes associated with the symptoms of these types of diabetes. But more importantly, Blueberry Leaves can reduce inflammation and lower triglyceride levels in the blood. The recent discovery that Blueberry Leaf extract reduces blood sugar levels by 26% and reduces plasma triglyceride by 39% indicates its usefulness in the treatment of diabetes. The herb contains a compound called Nerve renew which acts like insulin, though it is not as strong as insulin.