Weed strains can do so much. Finding the right ones for the right job can be real tricky.
I personally work mostly on pain. That is the problem I have so I can see if it works personally. Pain isn't so bad. If you grow the wrong strain no big deal. When it comes to PTSD and some other symptoms it is a little different. Some strains could make the problem worse. Smoking the wrong pot won't make my back pain worse.
I agree that weed can replace a lot of Pharmaceuticals. Some, not all though. To bad there is little chance that the 2 groups work together.