Have you ever seen or heard of these fruits before? They are said to be the power fruits, and usually used in making mixed juice drinks.
As you've already known, people who have a high fruit diet can lower the risk of several chronic diseases.
Acai Berry

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The acai berry contains several potent antioxidants, which can boast up to 30 times the anthocyanin in red wine. It is also loaded with vitamins, especially E, and minerals including copper, iron, and calcium. The monounsaturated fat and polyunsaturated fat ratio in the berry is almost identical to olive oil.
The acai berry can help sexual dysfunction, energy deficiencies, immune problems and circulatory conditions.
For more information, you can it here, and on Wikipedia.
Camu-Camu

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The camu-camu, or myrciaria dubia, is a native fruit of Peru, and contains potassium, flavoroids, vitamin C, and amino acids. It is believed to enhance mood, fight depression, and increase energy level.
The camu-camu can help mood disorders, immune function, and help with viral and bacterial infection.
Further reading can be found here, and on Wikipedia.
Bilberry

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Bilberry is also known as the European blueberry, whinberry and other names. It possesses an impressive antioxidant property, and proved to benefit eye health. Since bilberry is abundance in antioxidants, it is believed to protect the body against carcinogens, and free radicals. Nutritional includes flavonoids, anthocyanins, and resveratrol.
Bilberry can help eye problems, arthritis, heart attack, stroke, diabetes, diarrhea, and dysentery.
More reading can be found here, and on Wikipedia.
Wolfberry

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Wolfberry provides 18 amino acids, 21 trace minerals, and vitamins. It also carries lyceum barbarum polysaccharide (LBP), which is known to help repair cellular DNA.
Wolfberry can help damaged DNA, and sexual dysfunction.
More reading can be found here, and on Wikipedia.
Aronia Berry

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The aronia berry contains high amount of proanthocyanins, and quinic acid which is ten times more than cranberries. Thus, the quinic acid helps prevent urinary infection. The nutritional values include polyphenols, anthocyanins, vitamins, minerals, and flavonoids.
Aronia berry can help inflammation, diabetes, and circulatory problems.
Read more about it here, and here.
Acerola Cherry

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The acerola cherry is rich in several nutrients, especially vitamin C, and has over 150 phytonutrients. It includes potassium, magnesium, and other minerals. It has been used to treat fever.
The acerola cherry can also help immune function, dysentery, and diarrhea.
Further reading can be found here, and on Wikipedia.
These six power fruits are less common from the regular berries that we are used to in the US, but you can find them available for purchase online. They are newest trend in fruit drinks!