Comparison of Vitamin D Serum Values between Rheumatoid Arthritis and Lupus Populations: An Observational Study.

Conclusion: VitD serum values were lower in lupus patients than RA ones. Since VitD deficiency is very common in Iran, physiologic doses of VitD supplementation in patients lead to higher serum levels of VitD. Lower VitD values in lupus patients compared with RA ones may stem from intestinal malabsorption, higher doses of corticosteroid therapy, renal involvement and proteinuria, different polymorphisms of VitD receptors, and more sun protection strategies in lupus patients. PMID: 29854015 [PubMed]
Source: Open Rheumatology Journal - Category: Rheumatology Tags: Open Rheumatol J Source Type: research