Beta-cryptoxanthin:
The Good Stuff in Fruits and Vegetables May Cut Arthritis Risk

Those who cope with the joint pain and muscle problems associated with Chronic Fatigue Syndrome and Fibromyalgia may be interested in new information that suggests that the beta-cryptoxanthin in fruits and vegetables may cut arthritis risk. A recent study suggests that some dietary carotenoids, including beta-cryptoxanthin and zeaxanthin, may lower the risk of developing arthritis. Yellow and orange fruits and vegetables are the natural sources of beta-cryptoxanthin and zeaxanthin, and researchers suggest that modest intake - as little as one glass of freshly squeezed orange juice per day - may be sufficient to cut the risk.

Additional information:
How Fruits, Veggies May Fight Arthritis
Antioxidants May Help Decrease Inflammation, Study Shows

The source for that article:
Pattison, D. American Journal of Clinical Nutrition, August 2005; vol 82: pp 451-4555; News release, Medical College, University of Wisconsin. WebMD Medical Reference provided in collaboration with The Cleveland Clinic: Rheumatoid Arthritis Basics.