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Avocados
Avocados (yes, they are fruit) are high in fat and calories, but they're still a nutritional bargain. First of all, their fat is mostly the good, monounsaturated kind, and like olive oil, it's rich in antioxidant oleic acid, which helps lower dangerous LDL cholesterol while raising levels of beneficial HDL cholesterol.
Avocados are a very good source of vitamin E and an excellent source of potassium, which helps regulate blood pressure. They're very high in fiber, and contain folic acid and vitamin B6. Certain chemicals in avocados stimulate production of collagen, which makes it great for the skin and explains why you can find it in soap form in the skincare aisle. Opt for the fruit instead: it's not only better for your skin, it's also one of the most delicious foods you can eat.
Blueberries
These small, unassuming berries are an amazing source of fiber and nutrients. Blueberries are high in the soluble fiber pectin, which has been shown to lower cholesterol and prevent bile acid from being transformed into a more dangerous, potentially cancer-causing form. Their insoluble fiber helps prevent and relieve constipation. Blueberries contain the same compound found in cranberries that curtails urinary tract infections. The anthocyanoside compounds in blueberries help cure diarrhea.
Anthocyanosides are also antioxidants and help fight infection and inflammation. Blueberries are bursting with other antioxidants as well. Ellagic acid appears to prevent cellular damage that can lead to cancer. Wild blueberry flavonoids strengthen blood capillaries and improve circula-

 
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