Before cannabis I had constant pain in my finger joints (arthritis).
I was taking 6-8 paracetamol/day to relieve the pain and could no longer open twist top jars/bottles. Mouse clicks were becoming very painful.
After a month of smoking cannabis every night the joint pain went away completely.
After 6 months, I regained the use of my hands and can now open jars/bottles as if there was nothing wrong, and operate a mouse without pain. My wedding ring, that I had to remove because of swollen joints, now fits normally again.
ZERO side effects!