Eating to reduce inflammation

My dad struggled with terrible Rheumatoid arthritis of his wrists and knees, so bad sometimes that he couldn't write his own signature or walk up and down stairs without cringing. But he'd be darned if he was going to start doing something crazy like eating healthier. That was just a load of you-know-what. But my mother and I truly believed that if he made some changes in his life he would feel better overall and his Arthritis might not trouble him so much. Turns out we were on to something, as this article points out that diets high in fat, sugar, salt and other unhealthy stuff are definitely not helping relieve the pain of inflammation.

Other factors that contribute to inflammation? Stress, lack of sleep, lack of exercise and basically everything else that's characteristic of an unhealthy lifestyle. That isn't to say you have total control over your aches and pains, but apparently some healthy changes can make life more bearable.

What's your experience with inflammation?