This was posted sometime ago by a (former?) longtime member here named "Granny StormCrow" who has done a fabulous job of compiling links to many different studies relative to the many specific ailments that Cannabis is known to treat and is well worth a look-see.
Internet search if more recent ailment specific information is desired.
Grow well and be well amigo's.
Edit: I just noticed that this is stickied already but perhaps this will help someone stumble onto this interesting information.