Big Bone or Kashin-Beck Disease poses ponderous health risk to tens of thousands of people in many parts of Tibet. The other places the disease is found are northern China, North Korea, Mongolia, and Siberia. But some report said in China, it is almost disappearing today. Not in Tibet. “The problem is that Tibet is an endemic region, which means the disease is occurring there all the time,” said Dr. Lhamo Sherpa.