New research gives tantalizing clues to the potential of blueberries in reducing risk factors for cardiovascular disease and metabolic syndrome. The effect is thought to be due to the high level of naturally occurring antioxidants called phytochemicals contained in blueberries.
Researchers studied the effect blueberries had when added to the diet of rats. After 90 days, rats that received a blueberry-enriched diet had less abdominal fat, lower triglycerides, lower cholesterol, and improved fasting glucose and insulin sensitivity.