When I drink grape juice and then I pee, where does all the purple go?
Your pee, well, everyone’s pee comes from the blood that is filtered by the kidneys. When you drink grape juice, the first thing that the body absorbs are water molecules, no purple stuff goes to the blood stream. Everything is absorbed in a molecule level and the color purple of the juice if it doesn’t suffer oxidation by the low pH level you won’t probably notice it with the rest of the brown stuff.
