Brown Rice.

Brown rice (or otherwise called "hulled rice") is unmilled or partly milled rice, a kind of whole grain. It has a mild nutty flavor, is chewier than white rice, becomes rancid more quickly, but is far more nutritious. Any rice, including sticky rice, long-grain rice, or short-grain rice, may be eaten as brown rice.

In much of Asia, brown rice is associated with poverty and wartime shortages, and in the past was rarely eaten except by the sick, the elderly and as a cure for constipation. This traditionally looked-down-upon kind of rice is now more expensive than common white rice, partly due to its low consumption, difficulty of storage and transport, and higher nutritional value.

Brown rice and white rice have similar amounts of calories, carbohydrates, fat and protein. The difference between the two lies in processing and nutritional content. If the outermost layer of a grain of rice (the husk) is removed, the result is brown rice. If the husk and the bran layer underneath are removed, the result is white rice. Several vitamins and dietary minerals are lost in this removal and the subsequent polishing process. A part of these missing nutrients, such as B1, B3, and iron are sometimes added back into the white rice making it "enriched", as food suppliers in the US are required to do by the Food and Drug Administration (FDA). One mineral that is not added back into white rice is magnesium; one cup of cooked long grain brown rice contains 84 mg of magnesium while one cup of white rice contains 19 mg.

When the bran layer is removed to make white rice, the oil in the bran is also removed. A recent study has shown that rice bran oil may help lower LDL cholesterol.
Among other key sources of nutrition lost are fatty acids and fiber.
Brown and white rice also differ in their chemical makeup.

http://en.wikipedia.org/wiki/Brown_rice