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The health benefits of blueberries or products containing real blueberries or pure blueberry juice are numerous. Studies consistently prove that this fruit contains powerful antioxidants that prevent various diseases. In addition, the fruit is full of other vitamins and minerals necessary for a healthy body.

Blueberries originally grew in North America and was not brought to the European continent until the 1930s. Today, the plant is grown in Australia, New Zealand and parts of South America. It is perennial and usually blooms in mid-summer. The plant has two main varieties of shrubs. The wild variety grows rather low on the ground and is called the lowbush blueberry; the taller variety is a cultivated plant called blueberries.

The berries are spherical and about one and a half inches in diameter. When ripe, the grain is dark blue or blue-violet. Taste varies according to the ripeness of the fruit; the taste becomes less sour and much sweeter than the longer grains of the bush.

Raw blueberries are a great choice for a snack. A typical serving size is about two and a half ounces, which is about fifty medium sized fruits. One serving contains about forty calories; almost none of these calories are fat free. Of course, there is no cholesterol and only a small amount of sodium. The fruit consists mainly of carbohydrates with about 7 g of sugar and 2 g of fiber per serving.

Although blueberries contain small amounts of various vitamins and minerals, it is mainly known as a source of vitamins C and K and a mineral known as manganese. In fact, according to the US Department of Agriculture, this fruit provides one fifth of the recommended daily amount of manganese and a quarter of the daily amount of vitamin K. In addition, blueberries contain small amounts of B vitamins that provide the body with energy.

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