and another cause of arthritis is dehydration... dehydrate the body and see how well the joints function... meanwhile the west asian human needs 40-60% air humdity... meanwhile the official weather channel during winter dry season always falsly reports humidity as being much much better than it is, consistently, this is some weird scam... as a consequence people breath dry air cluelessly and dehydrate their bodies... meanwhile no one is smart enough to own their own $10 digital hygrometer?!... same thing for back pains...!!!