Another way to screw up your kids: physical abuse causes arthritis

From Arthritis Care & Research via Science Daily "Adults who had experienced physical abuse as children have 56 per cent higher odds of osteoarthritis compared to those who have not been abused".

Of course, you always have to wonder if some odd pathway in the body causes both the behavior of child abuse and a propensity to arthritis. Then, if abuse is passed on genetically, so would the arthritis.