It is because it contains betalain. Red dragon fruit, beets, etc. are rich in betalains. Betalain is the main coloring substance in purple-red foods such as dragon fruit and beets. It has strong antioxidant properties and helps eliminate free radicals in the human body and resist aging.

Peel off the outermost sepals of dragon fruit, and the exposed purple-red inner skin is also rich in betalains. Extended information

Urine will turn red after eating red dragon fruit. This is also a normal phenomenon because betalains are generally hydrolyzed after passing through the digestive system in the human body, and the main chromophore is relatively stable, especially Betaine is not easily degraded by the human body and will be excreted from the body in the feces or from the urinary system, causing the urine to appear pink.

This "dying" reaction of betalains is completely different from that of blood in urine. It will not cause harm to the human body. After you stop eating foods rich in betalains for a period of time, your urine will change. normal.

People's Daily Online-Red foods have their own health-preserving properties