Capsicum also known as Bell peppers are fruits that belong to the nightshade family. They are related to chili peppers, tomatoes, and breadfruit, all of which are native to Central and South America. They are low in calories and exceptionally rich in vitamin C and other antioxidants, making them an excellent addition to a healthy diet. Bell peppers come in various colors, such as red, yellow, orange, and green — which are unripe. Green, unripe peppers have a slightly bitter flavor and are not as sweet as fully ripe ones.