I have had/have chronic pain from an injury and now from RA etc. and have been taking pain meds for 11 or 12 years now without fail. I have gained almost 80 lbs. in that time? I am 54 years old and until my mid 40's I have always been the same weight, pretty much, and now WOW. Is this a common side affect and is there a way (other then the usual dieting and stopping the meds) that could counteract the weight gain. I am eating right and I walk as best and as much as I can, but nothing seems to work.