It is well acknowledged that Vitamin C assists your body in the formation and maintenance of collagen and other connective tissue. It also acts as an antioxidant which in turn assists with joint health. What is strange is that researchers had conflicting evidence about Vitamin C and joint health.
In a study involving guinea pigs, researchers found that those who were administered too much Vitamin C actually developed Osteoarthritis. And although they could find no direct causal relationship between the excessive amounts of Vitamin C and OA, they postulated that Vitamin C triggers a protein (TGF-beta) that causes bone spurs to form which in turn causes irritation and inflammation.
In a European study, researchers reported that both men and women who lacked sufficient amounts of Vitamin C actually developed joint inflammation. And, the findings were that those with deficiencies of Vitamin C did run the risk of developing Rheumatoid Arthritis. And, those with the lowest amounts of Vitamin C in their diet were the most likely to be at risk.
Their conclusion was that as to RA, moderate amounts of Vitamin C provided some protection against developing the disease.
These studies were based on those who ate greater amounts of fruits and vegetables and it did not involve vitamin supplementation.
In conclusion, it seems inescapable that Vitamin C in proper doses carries a benefit when considering OA. And, that extremely low doses of Vitamin C carried a significant risk of developing RA.