Drinking urine, diclofenac, pigeon fancier's lung, hospital food

Is it safe to drink urine, or even sea water in a survival situation? Mark Porter examines calls to withdraw one of the most widely used anti inflammatory drugs, diclofenac, because it increases the risk of heart attacks. And what kinds of health problems can result from living with a parrot, cockatiel or a loft full of pigeons? As guidelines to improve hospital meals are introduced, how will the idea of food as medicine improve patients' experience?