Nutritionists and scientists acknowledge that blueberries contain high levels of vitamins C and K, and they contain a lot of manganese, which is very important for any form of life. Thanks to the large amount of tannins, blueberries can reduce the risk of cancer. Also these berries help to lower cholesterol level, thus protecting the heart. Blueberries contain one of the most rarely found organic acids – succinic acid, which plays an important role in the processes that ensure the elasticity of blood vessel walls. These dark berries also have high levels of fiber and amino acids. Already in the 16th century people found out that blueberries are beneficial to the liver and stomach, it is an astringent and helps to treat chronic cough and lung diseases. Berries contain a lot of vitamin A – carotene, which improves eyesight. Therefore, blueberries are considered one of the best phytotherapeutic agents against cataract. People who on daily basis are working in office (sitting in front of the computer) must use blueberries. Blueberries significantly improve eyesight in dark, enhance visual acuity and prevent eye fatigue. It has been proved that blueberries accelerate the recovery of eye retina. During the Second World War, British pilots ate blueberries and blueberry jam to improve night vision. Even one aviation commander included these berries in pilots’ obligatory diet.

Another interesting property of blueberries was discovered by the American scientist J. Joseph, a senior specialist in research about aging. He stated that laboratory studies have shown: a person’s diet, which is rich in blueberries, is very effective in combating the signs of aging – memory, vision, muscle strength and physical co-ordination disorders.

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