There are kinds of fruit where it's common for people to eat the fruit together with the skin (apple, grapes etc.). But there are some where people would peel off the skin beforehand like the kind of orange, banana, water melon etc. The skin does contain a heavy dose of fiber, and am wondering is it safe, or even healthy, to eat the skin?
But has anyone eat fruits such as orange or banana wholly without peeling off the skin, and find any health issue (positive or negative)? Assuming the skin is washed clean, do people peel skin because just it taste bitter?