 the faster that happens and the stronger that happens, the better off your epithelial cells are in your microbiome. So little kids get really fast yellowing to the urine when they take a multivitamin or a B vitamin in particular. And then older people that have more disease and have been eating a lot of standard American diet, they can take that and they don't have as much yellow. But here's a real, you want to hear a really healthy person