Black rice generally has no efficacy, eat black rice in moderation can add nutrition for the body. Black rice belongs to the food, does not have the role of drugs and efficacy, usually 100 grams of black rice contains 2.5 grams of fat, 9.4 grams of protein, 72.2 grams of carbohydrates, 3.9 grams of dietary fiber, 342 kilocalories of energy, as well as 12 milligrams of calcium, 356 milligrams of phosphorus, 147 milligrams of magnesium, 1.6 milligrams of iron, 3.8 milligrams of zinc and other nutrients, usually eaten in moderation, can be supplemented for the body of the black rice Nutrients. Black rice is food, usually no effect, usually eat black rice can help the organism to supplement nutrients. It is worth noting that after eating black rice, you may have black stools, which is a normal phenomenon not to worry about.