>LONDON — A mother of two from Scotland, could be a key figure in the development of more effective painkillers, new research suggests. Jo Cameron has never felt the need for pain medication. She is one of only two known individuals worldwide who carry a unique gene that enables her to live without anxiety, fear, or physical discomfort. Now, scientists have begun unraveling the mechanisms of this rare mutation, fostering hope for the creation of improved pain relievers. . . . [Source Article](https://12ft.io/proxy?q=https%3A%2F%2Fstudyfinds.org%2Fwoman-cant-feel-pain%2F)