Nutrition experts say they are a great … A banana is an elongated, edible fruit β€”botanically a berry [1] β€”produced by several kinds of large treelike herbaceous flowering … Β· learn about the health benefits of bananas, one of the most common and delicious fruits. Β· bananas are thought to have been first domesticated in southeast asia, and their consumption is mentioned in early greek, … According to the international glycemic index database, ripe bananas have a low gi of 51, with slightly under-ripe bananas even lower at 42; Β· bananas are a source of fiber, potassium, vitamin b6, vitamin c, and various antioxidants and phytonutrients.