It is just an observation that I made, the research seems to be mixed. My joint pain started a couple of years ago (early 30s), with really bad pain in my thum

It is just an observation that I made, the research seems to be mixed. My joint pain started a couple of years ago (early 30s), with really bad pain in my thumb joint after some exertion, X-ray or MRI showed I had some inflammation and excessive liquid, the pain went away after one month or so; then I got pain on the outside of my elbows (perhaps from incorrect posture and lifting my toddler all the time); I originally thought it had to do with my nicotine usage, but I quit for some good months and nothing happened, on the contrary, I started using more coffee and my pain got worse. I don't think the coffee is 100% responsible, rather that it exacerbates some underlying condition; but so far it is pretty dramatic -- after quitting coffee for a couple of days, my pain is almost gone -- and that happened for too many times to be just a coincidence(though it could).