Brown rice and white rice have similar amounts of calories and carbohydrates. White rice, unlike brown rice, has the bran and germ removed; and has different nutritional content. Brown rice is a whole grain and a good source of magnesium, phosphorus, selenium, thiamine, niacin, vitamin B6, and manganese, and is high in fiber. Why Brown Rice? Before white rice went through the refining process, it at one time looked exactly like the brown stuff. Brown, unlike white rice, still has the side hull and bran. The side hulls and brans provide “natural wholeness” to the grain and are rich in proteins, thiamine, calcium, magnesium, fiber, and potassium. For those trying to lose weight or those suffering from diabetes, it can prove a healthful staple given its low glycemic rating which helps reduce insulin spikes.