Cameron Diaz tells Dr Oz she drinks a litre of water every morning to help her bowel movements Health advice...Cameron Diaz has appeared on The Dr Oz show, where she recommended drinking a litre of water every morning for healthy bowel movements. CAMERON Diaz continues her transition from Hollywood star to Gwyneth Paltrow-esque health guru (although an infinitely less annoying one). Diaz appeared on The Doctor Oz Show in the US, purely to talk about, er, poo. Taking out a bottle of water, Diaz drank a litre in 20 seconds, explaining to the audience that it helps her number twos flow more easily. "This is the best way for me to go poop in the morning," Diaz said. Water wakes you up. First I brush my teeth because I don't want to swallow all the bacteria in my teeth from the night before. So I make sure that's gone and then I drink. Diaz goes into detail about the importance of good toilet practice and checks in her new book, The Body Book: The Law of Hunger, the Science of Strength, and Other Ways to Love Your Amazing Body. "Let's talk about poop, baby!," she writes. Yes, you heard me right. Listen, it's a natural and necessary part of being human. Now I know that some people don't like talking about their bowel movements but here's why I'm talking about it: because your poop is a key indicator of your overall health. So let's get past the ick quotient and the modesty factor and become more familiar with what comes out the bottom of your beautiful bottom. Because poop is not "eeew." It's knowledge. Diaz and Dr Oz then examined a few stool samples to show the difference between them when a person's water intake is at different levels. Dr Oz was certainly impressed, giving the actress a high five.