Get rid of the High Fructose Corn Sirup in your life, for starters. Shop the outer ring at the grocery store. Stay away from the aisles. Five years ago my wife was told she would need a knee replacement, and that nothing could be done to reverse her arthritis in that knee. We cut the dirty carbs, upped the fat and protein, and her knee is now no trouble at all.
We did the same. Wife and I lost a lot of weight and now joints all feel fine. In fact everything is better. But doctors keep recommending the SAD diet.