(CNN) Jo Cameron, a 71-year-old Scottish woman, has never needed to take painkillers after seeing the dentist and can eat spicy Scotch bonnet chilis without any discomfort. She thought little of it until she sought treatment for a hip problem at the age of 65. A year later, she said she felt no pain after undergoing what's typically a very painful operation on her hand for osteoarthritis. "I had no idea until a few years ago that there was anything that unusual about how little pain I feel. In a case study published Thursday, researchers explained the discovery could help guide new treatments for a range of conditions, from post-operative pain to anxiety.

Source: CNN March 28, 2019 15:09 UTC