Purple Rice Compounds Slow Down How Your Body Digests Food

Surprising finding: Compounds in purple and black rice can reduce how quickly your body breaks down starches and proteins.

Anthocyanins—the pigments that give purple and black rice their distinctive color—appear to slow digestion by forming complexes with starch molecules and altering protein structure. These compounds inhibit key digestive enzymes, potentially affecting how quickly nutrients enter the bloodstream. Research also links black rice anthocyanins to changes in gut bacteria composition. Food scientists are now incorporating anthocyanin-rich rice extracts into products like bread and beverages, exploring their role as functional ingredients. While the review highlights these compounds’ influence on metabolism and gut health, more research is needed to understand the practical implications for everyday eating and metabolic management.

Source: PMID 39874887 (Food chemistry, 2025)