Brown rice is definitely better than white rice. Here is why:
A cup of cooked, medium grain white rice has 242 calories vs. 216 calories in a cup of long grain brown rice.
White rice has only 0.6 grams of fiber per cup compared to 4 grams of fiber in brown rice.
White rice has 53.2 grams of carbs per cup vs. about 45 grams in a cup of brown rice. In addition, the 4 grams of fiber in the brown rice brings the total net carbs down to 41 grams.
Type 2 Diabetes
Harvard researchers found that eating five or more servings of white rice per week raised a person's risk of developing type 2 diabetes, while eating two or more servings of brown rice per week actually lowered a person's risk of developing the disease.
Vitamins and Minerals A cup of brown rice contains 84 mg of magnesium compared to 19 mg in white rice. This is because white rice is created by removing several of the outer layers of a grain of rice. Many vitamins and minerals are lost in this process. While some of them are put back into white rice (hence the term "enriched rice"), many, including magnesium, are not added back in.
Also, eating a food that contains its original vitamins and minerals in tact is much better for you than eating an "enriched" food that has been stripped of its nutrients and had chemically processed ones artificially added.