Essie....yes and no. The research, no...Personal experience, yes and...
Paleo diets (lower carb, fairly high in animal fats and proteins: www.proteinpower.com/drmike/saturated-fat/
Grains are linked to "leaky gut" which is felt to at least contribute to arthritic changes: www.marksdailyapple.com/grain-pain/
Tropical oils, usually high in saturated fats are anti-inflammatory: www.marksdailyapple.com/guest-post-by-mode
Nightshades, which includes potatoes are included, are inflammatory, especially to the joints: www.marksdailyapple.com/nightshades/
My own personal experience shows a dramatic improvement with low car, paleo diet. I have both osteoarthritis and a form of RA. First diagnosed with osteo in my mid-20s, RA about 2 1/2 yrs ago. The form of RA I have rarely causes joint damage, but can often progress to "normal" RA....according to my doc I have RA by blood work, but not by symptoms.
According to my RA doc my inflammation levels are very low, despite having "very high" rheumatoid markers. Each visit he's amazed at how well I'm doing and the fact that I am not taking large doses of pain meds, despite taking no treatment for the RA. I was taking an antibiotic but stopped it several months ago when I lost insurance coverage. I take only Aleve as needed, which has been about twice a week lately....since I got back on my low carb, high fat (and high sat fat) diet.
My RA doc says avoiding processed foods, eating higher amounts of fats are probably the key as both lower body inflammation. My primary doc and another I'd seen in the past have both told me to not worry about fat or protein, but to go as low as possible with carbs, getting what I do from dairy (full fat) and vegetables/fruits.
In August, when my daughter got married, I went off my diet and by the end of day 3 I was in serious pain. I immediately protein/fat loaded with minimal carbs and within 48 hrs or so I was back to normal. Currently my diet is usually less than 10% carbohydrate with no grains and only rarely processed foods (condiments mainly).
Low Carb and Paleo advocate
Palindromic Rheumatoid Arthritis diagnosed September 2007
Raleigh Low Carb Examiner