It was long known that computer games involving motion like Nintendo are used to reduce weight. Slowly the lobby claims are rising by each passing day. A game called repassion is known to improve Cancer receovery time. The game shows how cancer cells spread and how you can kill them which creates a will power in children to fight cancer. They take their Chemotherapy regularly and improve over time.
There have been other games which are claiming could cure sickle cell anemia among other diseases. Various other MMORG's teach teamworking for the achival of common goals in life like fighting diseases or terrorists. Other games teach about the cultures of other nationals and make them better global citizens and knowledge workers.