Don't just eat white rice! Doctors reveal the benefits of black rice, red rice, and purple rice — redefining inflammation and cancer prevention risks.
In recent years, more and more people are replacing white rice on their dining tables with purple rice, black rice, or red rice. Dr. Chang Chia-ming, the chairman of the Taiwan Personalized Medicine Society, pointed out that a systematic study confirmed in the 2026 issue of the journal Food Safety and Food Science Review shows that these "colored rice" are not just different in color; from a molecular level, they are quietly changing our inflammatory response, metabolic mechanisms, and even long-term health risks. In the process of turning rice into white rice, a series of refining and grinding steps remove the bran and germ, which contain rich bioactive substances. "When we choose to eat white rice, we are actually removing these key signals," Dr. Chang Chia-ming pointed out. Conversely, consuming colored rice, which retains the outer layers of nutrition, puts health signals back into the body. Colored rice and white rice differ significantly not only in color but also in variety structure, starch characteristics, and polyphenol content, which in turn affect overall metabolic response. Dr. Chang Chia-ming emphasized that the anthocyanins, flavonoids, and phenolic compounds found in colored rice are like "regulatory switches for the body," influencing anti-oxidation, anti-inflammation, blood sugar regulation, and intestinal flora. These colored rice, due to their different molecular backgrounds, have specialized effects. Black rice, for example, has the highest anthocyanin content and the strongest antioxidant capacity, making it particularly suitable for populations with significant chronic inflammation. Red rice, on the other hand, is mainly composed of proanthocyanidins and is more inclined towards regulating the intestines and metabolism, suitable for people with large fluctuations in blood sugar or intestinal problems. Purple rice is a hybrid of the two, with effects that fall between black rice and red rice. Many people switch to colored rice but lose its nutrients due to incorrect processing or cooking methods. Dr. Chang Chia-ming shared key steps to improve nutrient absorption. First, soaking is the most underestimated critical step. Dr. Chang Chia-ming said that rice is a living structure and suggested soaking at room temperature or in the refrigerator for 6 to 8 hours to activate enzymes and reduce anti-nutritional factors like phytic acid, soften the rice grains, and reduce the burden on the stomach and intestines. Going further, "sprouting" can turn rice into a different kind of food. Dr. Chang Chia-ming said that soaking the rice and then letting it sprout for 24 to 36 hours can increase resistant starch and γ-aminobutyric acid (GABA), which helps in blood sugar control and nerve stability. Cooking methods also determine how much nutrition is retained. Dr. Chang Chia-ming said that long boiling times or adding too much water should be avoided, and using an electric rice cooker for simmering or steaming is recommended to prevent the loss of water-soluble polyphenols. Moreover, letting cooked rice cool down or refrigerate it causes the starch structure to rearrange into "resistant starch." Even when reheated, some of it can still be retained, which helps slow down the rise in blood sugar levels, making it very beneficial for prediabetes and body fat control. For a more advanced approach, fermenting rice water or rice malt can produce beneficial bacteria and metabolites, increasing the release of polyphenols and enhancing antioxidant capacity, improving intestinal imbalance and chronic inflammation. Dr. Chang Chia-ming pointed out that modern medical concepts have shifted from simply calculating calories to emphasizing signals. By consuming black rice, red rice, and purple rice, along with the correct processing methods, not only can blood sugar be stabilized and cardiovascular risks reduced, but it also serves as the best key to overall intestinal and immune system regulation. Eating the right rice and using the right methods is the true way to add points to one's long-term health.
