What are the four examples of refined grains?

Refined grains are grains that have been processed to remove the bran and germ, resulting in a finer texture and longer shelf life but also a loss of fiber and nutrients. Four examples of refined grains include white rice, white bread, pasta made from white flour, and pastries made with refined flour. These grains are often enriched with some vitamins and minerals, but they lack the nutritional benefits of whole grains.