Bilberry can improve the health of your circulatory system. Antioxidant-rich bilberry can improve circulation and protect against circulatory-related disease. Bilberry can improve atherosclerosis and varicose veins. Atherosclerosis is a buildup of plaque inside the arteries; symptoms include elevated blood pressure, shortness of breath upon exertion, elevated heart rate and fatigue. Varicose veins are twisty, cordlike, visible veins, usually in the legs. Varicose veins can cause achy legs, cramping and pain after prolonged sitting or standing. Certain chemical elements of the bilberry plant can help improve eye health and protect the eyes from disease. Bilberry protects collagen structures found in the eyes. Bilberry can prevent and treat macular degeneration and retinopathy. Macular degeneration occurs when the macula, a portion of the eye that provides vision for clarity and detail, begins to break down. Retinopathy is damage to the retina of the eye. The retina is the portion of the eye that relays what is seen to the brain. Bilberry is a powerful anti-inflammatory. The herb is also a powerful antioxidant and has glucoquinine (lowers blood sugar levels).