The Friday Five: A Saliva Test for PTSD

The Friday Five covers five stories in health research that you may have missed this week. There are plenty of controversies and troubling ethical issues in science – and we get into many of them in our online magazine – but this news roundup focuses on scientific creativity and progress to give you a therapeutic dose of inspiration headed into the weekend.Here are the promising studies covered in this week's Friday Five:- Using graphene to repair shoulders- Testing for PTSD with saliva- Cancer detection with a microchip- Best posture for pill taking- Resilient food for climate changeAnd an honorable mention goes to research on a new way to induce healthy fat.Making Sense of Science features interviews with leading medical and scientific experts about the latest developments in health innovation and the big ethical and social questions they raise. The podcast is hosted by science journalist Matt Fuchs