 So when the probiotics, the good bacteria, eats fiber, and especially some specific kinds of fiber, it secretes butyrate. Now, butyrate, what it does is it travels to those microvilli, the small intestine, and helps them heal. So that's extremely important. So if somebody, and this is almost unilaterally, almost all the time, if I have a patient with leaky gut and I look at their diet, the one thing that they don't get a ton of is fiber.