Clare Collins is a Professor in Nutrition and Dietetics at the University of Newcastle. She joins Dr Karl for a colourful conversation about your toilet bowl and what it can tell you about your health. Don't be shy, listen up and discover what weird colours you should not see, and what they could mean. Got green poo? There's an explanation. How about 'cappuccino' wee or purple pee? You'll be surprised. Find out when to see your GP and what to show and tell. Perhaps you'll take away Dr Karl's new mantra: 'while the eyes are the window to your soul, the toilet bowl is a window to your health.