XAH has issues. He suffered a compression fracture in his lumbar spine from a relatively minor tumble. L-spine bones are big, heavy vertebrae, and especially in a 6-foot-plus, 200-lb-plus man, this should be a tough injury to get.
Drinking and smoking both are terrible on the bones. It's something I wasn't aware of either until recently. Google either topic for more info; it's readily available.