Why vitamin D?
Vitamin D helps:
- Support bone and muscle health
- Regulate immune function
- Influence inflammation, which plays a role in many forms of arthritis
Research has found that low vitamin D levels are common in people with rheumatoid arthritis, and some studies show supplementation can improve disease activity and joint tenderness. However, other large reviews have found mixed or limited benefits, so it’s not a guaranteed treatment.
Important point
Vitamin D appears most helpful when a person is deficient. Taking large doses when your levels are already normal is unlikely to provide dramatic arthritis relief and can be harmful if overdone.
Other nutrients often discussed
While not vitamins, these supplements have evidence for some people with arthritis:
- Omega-3 fatty acids
- Curcumin (from turmeric)
- Glucosamine and chondroitin (mainly for some osteoarthritis cases)
Bottom line
Vitamin D is probably the most researched vitamin for arthritis relief, especially if you have low vitamin D levels. But it is not a cure, and the benefits tend to be modest rather than dramatic. If arthritis symptoms are significant, it’s worth discussing testing your vitamin D level with a healthcare professional before starting supplements.
