Our jam "Blueberry" does not contain sugar, it is great for those who follow not only the figure, but also the visual acuity. What is useful? Due to its rich composition, blueberries have a positive effect on all body systems. Including for the nervous system - protects the body from the negative effects of stress, strengthening the nervous system. Eating blueberries will help improve motor functions, coordination of movements and memory, the work of which deteriorates with age. In addition, the antiseptic, bactericidal and anti-inflammatory properties of blueberries help the body fight viruses. Berries reduce the amount of sugar in the blood, increase the acidity of gastric juice, improve digestion, metabolism, enhance visual acuity, improving blood supply to the retina.