If you've considered drinking beet juice as a dietary supplement (claimed to lower blood pressure) you should know ... [View all]

that intense color, due to betacyanin pigments can pass through your digestive system. If you've ever seen blood in your urine, beet juice could give you a little jolt, until you realize it's more magenta than crimson in your pee. The color is pH-dependent, so in your more alkaline intestine, it turns a deep purple* which rapidly diffuses into the water. I'm thinking practical joke potential here -- like Burger King's Halloween black burger buns which gave people green poo.