hi, Daniella, I live in Las Vegas and my joints absolutely love this dry climate. Even when I go to California, which is not considered all that humid, my joints will act up for about a week.
Really, I do not have any swelling problems until recently. The diet I am attempting to follow is a modified Mayo diet, aka the grapefruit diet. Obviously I cannot have the grapefruit, so I have substituted orange juice. I used this diet years ago and lost 50 lbs with going to the gym 3 times a week. Walking on the ground does not help with my balance problems. The treadmill with holding on and moving consistently does help me. When the weather warms up (and after I have lost some weight to feel not so self conscious in a bathing suit) I will do some water walking in the apartment complex pool. It is not heated and the water is still too cold for me.